In this article, we will talk about typical problems when connecting your phone to a wireless Wi-Fi network, among which the most common are Android freezing on “obtaining an IP address” or an authentication error when connecting. Less common, but more common, is when your Android phone or iPhone just can't see the Wi-Fi network.
In step-by-step instructions, the following variants of the problem will be considered in order and what to do in each of the cases.
- Authentication failed (or phone says Saved WPA/WPA2)
- Infinite receiving IP addresses on Android
- The phone does not see the Wi-Fi network
Wi-Fi Authentication Error on Android
If your Android phone or tablet says “Authentication failed” when connected to Wi-Fi, or says “Authentication” for a while, then it still does not connect to the wireless network (when the android says Saved WPA / WPA2 - this is usually the same situation) , then in most cases it's the Wi-Fi password, and the problem can occur even when you enter it correctly (but, of course, this is what you should first check, this article can help, you can also just look at router settings).
But it's not always a matter of incorrect input: it happens that you are guaranteed to enter the password correctly, but the authentication error still occurs.
The first thing to try here is:
- Delete the Wi-Fi network (forget) in the phone settings, try to connect to it again by entering the password.
- Reboot the router (unplug it and plug it back in).
If none of these help, go to the router settings (any of the router setup instructions on this site will help, they all start with how to go to the router settings), and then to the Wi-Fi network settings and try the following ( after each change, save the settings, delete the previously saved network on the phone and try to connect again):
If even these items do not help, make sure once again that the Wi-Fi network security settings in the router settings are set to WPA / WPA2 (Personal) authentication, and not some other type (this option should be supported on any android phone). Also sometimes changing the network mode from b / g / n or auto to 802.11 n only or 802.11 b / g helps.
Android constantly writes Obtaining an IP address and does not connect to Wi-Fi
The second most common problem with connecting a phone (specifically Android) is endless attempts to connect with the text "Obtaining an IP address."
What can cause the situation:
- The DHCP server is disabled in the router settings.
- Just an android glitch.
If you don’t know for sure about the first point, then for a start just reboot the router, maybe this will already solve the problem. If that doesn't work, then the next steps are:
- Check if DHCP is enabled on the router, if not, enable it.
- If it is enabled, but still "Obtaining an IP address", then try to set a static IP address on the phone.
And now more about how to do both.
To enable the DHCP server, you need to go to the router settings (any instruction for configuring D-Link, Asus, TP-link, Zyxel routers begins with a description of how to enter its settings) and make sure that the DHCP server is enabled (usually , there should just be such a mark): on almost all models of routers, this option is located in the LAN or LAN (local area network) section:
- On ASUS routers - LAN - tab DHCP server
- On TP-Link routers - Advanced settings - DHCP settings
- On Zyxel Keenetic routers - In "Home Network" - Networking, for the DHCP option, enable "Server". Or, on Keenetic Lite, in Home network - Segments, check whether DHCP is enabled.
- On D-Link - in the "Network" or "LAN" section, the item or tab "DHCP server"
The second option is to set a static IP address on Android, for this:
Save your settings and try again to connect to the Wi-Fi network from your phone.
Android phone or iPhone does not see Wi-Fi network
If your phone does not see the desired Wi-Fi network, but it sees other networks, then in most cases the problem is in the Wi-Fi channels used. The fact is that by default, in the router settings in the wireless network settings, it is usually “Region: Russia” and channel: auto, which forces the router to select channels from 1 to 13. But: some devices do not support channels greater than 10. (On this topic there is a separate instruction :)
Thus, the first thing to try is to go to the router settings in the wireless network settings and change one of the two:
- Region - put USA, supported by almost all devices, only 10 channels.
- Change the channel manually (set within 10).
After that, save the settings and check if your phone sees the network now. If this did not solve the problem, then it makes sense to also try changing the channel width in the router settings, and for older phones, also try changing the network mode to 802.11 b / g.
IMPORTANT! Before you set up your phone, first check if you are in the coverage area of a particular wireless Wi-Fi connection. You can use your home Wi-Fi, or you can connect your iPhone to free networks e.g. in cafes or shopping malls.
So let's start:
- We go to the home screen and go to the "Settings" menu.
- Then the search for available Wi-Fi will automatically start.
- Choose a name and connect.
The the way is fine to connect to unsecured routers, such as in public places.
If you are connecting to a secure Wi-Fi, then the sequence will be slightly different:
- Open the "Settings" menu.
- We are looking for the line "Wi-Fi" and turn on the option.
- After automatically searching for Wi-Fi, select the desired access point.
- Enter the password and click Connect.
If you cannot connect your phone to Wi-Fi in this way, then you are entering the wrong password. To find out the correct one, contact the Wi-Fi administrator.
DO NOT FORGET! To connect your phone to a secure Wi-Fi, you need to know the password, a “lock” icon is displayed next to such connections.
There are also situations when you need to connect your phone to a hidden access point that is not displayed in the general list. To connect a smartphone, you need to know the exact name of Wi-Fi:
- Open the "Settings" menu.
- We are looking for the line "Wi-Fi" and turn on the option.
- Click "Other" and enter the exact name.
- Click "Security".
- After that, you need to select the type of protection, as shown in the illustration below.
- We return to the "Other network" item and enter the password.
- Click "Connect".
The most common problems when trying to connect an iOS phone to Wi-Fi
Very often it happens that they seem to have done it right and followed the instructions, but nevertheless it is not possible to connect a phone with the IOS operating system to Wi-Fi. Do not despair, and think that the saying “Technology in the hands of a monkey is a piece of iron” is about you. Most likely, it's not some kind of technical failure.
If you cannot connect your phone to Wi-Fi, do the following:
- Check your router connection. Also, make sure you're in range.
- Check that Wi-Fi is enabled on your smartphone. Go to "Settings", then to "Wi-Fi". If there is a blue checkmark next to the desired name, this means that the connection on the phone has been completed and problems are observed in the router.
- If you want to connect your phone to Wi-Fi at home, then check that the cables are connected correctly and that the router is configured correctly.
- Reboot your IOS phone and set it up again.
- Reboot the router and also reconfigure it.
If nothing helps, try the following:
- If you are trying to connect your smartphone to public place, contact the employee of the establishment and ask him to set up Wi-Fi.
- Check the connection on other devices, such as a laptop, or ask others if the Internet works for them. If there is no connection on other devices either, then there is a problem with the Internet provider. Contact your internet provider.
- Try connecting to a different location or to a different Wi-Fi. If attempts are unsuccessful, contact a service center to check your Iphone.
- Update the firmware version of the router and check that your smartphone is in the list of supported devices.
How to Connect Android to Wi-Fi
Many people think that setting up an iPhone is really not an easy task. With this statement, few will argue. But as for Android, many believe that these are easy-to-use smartphones that even a child can figure out. However, in fact, when trying to set up Wi-Fi, some difficulties may arise here.
In general, the popularity of Android is growing every day. Probably, there is no longer a person who would not have a smartphone or tablet with the Android operating system in the arsenal of home appliances. Even the smallest children today actively use these gadgets instead of the usual toys, dolls, cars, etc. But at the same time, few people know how to properly configure Wi-Fi.
It is worth connecting the smartphone once and in the future the smartphone will automatically connect to Wi-Fi. But it is not uncommon to see situations where you need to manually configure Android.
For a visual illustration, we will use the LG G4 smartphone with the version of the Android 5.1 operating system. However, the model does not matter, android smartphones are almost the same.
Before you start setting up Android, you need to install Wi-Fi by turning on the adapter. The adapter is enabled in two ways:
- Through the toolbar.
- Via device settings.
The first method is very convenient: swipe your finger across the screen (from top to bottom) and see the toolbar, as in the figure:
We are looking for a Wi-Fi button with the corresponding icon. Click on it and thus activate the Wi-Fi model.
After that, the system starts searching for available wireless networks and the following list appears on the screen:
Choose the one you want and connect. If it is password protected, enter a combination of characters and click "Connect". The whole process is automated and will not take much time.
Another question is if the connection is hidden in the router settings or the DHCP function is disabled. Then you need to configure Android manually.
How to set up Wi-Fi on Android manually if the connection to the router is hidden
As with the first method, we first need to enable the adapter. But the methods listed above are not suitable for us. Changing the strategy: first go to "Settings". But then we already act depending on the version of the phone. We find the item "Wi-Fi" and open its menu. Turn on the adapter. If you have an older model, then find the "Wireless networks" item and select "Wi-Fi Setup". Move the adapter to the on position.
Let's move on to manual search. available connections: You will be presented with a list of access points that were found automatically. If you are connecting to a hidden network, click "Add Wi-Fi":
Enter the exact name of the hidden access point (SSID) and proceed to security, as in the illustration below.
"Saved, WPA/WPA2 protection" and "Authentication failed" are errors that every Android smartphone and tablet user faces sooner or later. If this problem occurs, do not run to the service center and do not ask your friends to flash the device. To get started, read the recommendations and find out what to do if authentication fails when connecting to WiFi on Android.
Causes and ways to solve the problem
There are few reasons and it is not difficult to fix them.
Checking if the entered password is correct
No, this is not a joke. Often, users make a typo, forget to change the keyboard layout, or type in a case-insensitive password. Try entering the combination again and check the box next to "Display entered characters." This will help you avoid recurring problems.
Important! For any actions with wireless networks (changing the password, IP address, proxy and DNS servers), always delete the saved one and connect to it again! Just hold down the field with the desired network.
Problem with router settings
15% of devices have a WiFi module on board that does not support the 802.11n standard. To do this, enter the router settings: in the address bar of the browser, enter 192.168.0.1 or 192.168.1.1 and enter your username and password in the window that appears. Consider the TP-Link WR740N as an example.
Reference! Most routers use "admin" as the username and password by default.
In some cases, the problem is due to the WPA2 security mode being enabled. Replace WPA2-Personal with WPA and the encryption type with AES. All this in the "Wireless Security" submenu.
Using Third Party Applications
There are dozens of apps on the Google Play Market that promise to solve all your wireless connection problems.
Basically, these are dummies that will reduce the performance of your device and take up extra memory. But there is an exception: WiFi Fixer. It is not clear what is the basis of this program, but the reviews are very flattering. Try it.
Problem with Android device firmware
In some devices this problem appeared after the official update from the manufacturer. For example, in a smartphone LG L90 D410 Dual with Android 5.0.1 given error appeared constantly and it was possible to connect only to open WiFi networks. If you are sure that the device is malfunctioning, contact the support service or service center.
An alternative way to fix the error or "crutch"
It does not always work and not on all devices, but if you are driven to despair, then go to "Settings", click "More" - "Tethering mode".
- Turn the Bluetooth modem on and off (wait for it to turn on).
- Turn the access point on and off (do not click quickly, but wait until it turns on and only then turn it off).
- Log in to the VPN and set a password.
- Turn on / off the flight mode.
- Profit!
When setting up your router for the first time, take into account the “ability” of your Android device and do not use encryption and thirty-digit passwords, especially if you live on the outskirts of a village. And if safety is the most important thing, then it is better to consult a specialist. Good luck!
Authentication error when connecting to WiFi is one of the most common problems that is associated with a problem connecting the device to the router (router).
Let's take a closer look at the error itself and what to do if it occurs.
Why does this problem occur?
An authentication error occurs when the router and the device (the connected subscriber) cannot identify each other for a number of reasons. The main indicator of such a problem is that when connected to the network, it says “Saved, not connected” or simply “Saved”.
This problem often occurs both on devices running the Android operating system and on ordinary personal computers and laptops. Let's consider in more detail all possible ways to troubleshoot.
Follow the instructions and tips to set up the correct internet connection.
Password check
Often the user cannot connect to the network because the password is incorrect. Due to the fact that the default access window hides the entered password characters, the user may make a mistake and enter one of the characters incorrectly.
Check the "Show password" checkbox to see all the characters you enter. On computers running Windows OS, hold down the key located on the right in the text field to see the characters of the entered password for accessing the router.
If you have forgotten your password, you must use the router settings.
To do this, follow the instructions below:
- Log in using your personal computer or laptop in any of the browsers;
- Enter the local address of the router in the address bar. Look at the address at the bottom of the router or in the manual for it. If you can't find localhost information, use the command line options.
Enable the Run window. In the text box, type "cmd" (without quotes). Press Enter. In the console dialog box that opens, type in the text "ipconfig" (without quotes) and press Enter.
Find the “main gateway” item and look at the address in the column opposite - this is the local identifier of the router on the network;
- Enter the data to enter the router settings (login and access password). If you have forgotten these details, contact your network provider;
- After logging in, you will be taken to the router's quick settings tab. The settings menu differs depending on the router model. In some cases, it may be presented English language;
- Go to the advanced settings tab and in the WiFi field select the security settings item, as shown in the figure below;
- In the text field of the encryption key, you can publicly find out which encryption key the router uses;
- Turn off the settings menu and try to connect to the router by entering the passkey you just viewed.
Checking the router connection
If you still get an authentication error after entering the correct password, the next step is to check if the router is properly connected to the network. The figure below shows the basic connection diagram of the router.
Make sure all wiring is connected as shown. Otherwise, reconnect. After that, reboot all devices and try to connect to the router again.
Also, the problem of an authentication error may occur on the provider's side, so it is appropriate to call the communication provider back. Perhaps they can solve the problem on their side or send you competent specialists who will solve the problem.
In some cases, an authentication error occurs on computers with outdated network adapter (network chip) drivers. Follow the instructions to update the driver software:
- Enable the system's Device Manager window. To do this, right-click on the "Start" button and select "Device Manager";
- Find the tab with network adapters among all devices and expand it;
- Find your WiFi adapter in the list of devices. Right click on it and select update driver. The driver software installation process will start and finish automatically.
Restart your router and computer and try connecting to the network again.
Update router network adapter drivers on user's computer
WiFi authentication error on Android is a fairly common error. Unfortunately, not every user understands what it means and how to fix it. At the same time, in order to solve it, you need to know why it occurs. Therefore, to begin with, you should answer the question, what is WiFi authentication.
Now click on it and hold your finger until an additional menu appears, in which you need to select "Forget network". Don't worry, it won't disappear. Only the data about it will be deleted.
Now start searching for available connections again. Try connecting to your router. Only this time, when entering a password, check the box "Show password".
This will allow you to see the characters being entered. Carefully check the correctness of the key. If the password is entered correctly, but the WiFi network authentication error still appears on Android devices, then you should enter the router settings and check the encryption type.
Setting the encryption type in the router settings
In order to enter the router settings, you need to connect to it. You can do this using a laptop or a desktop computer, both via WiFi and using a cable. After connecting, open the browser and enter the IP of the access point in the address bar. As a rule, the address of the device is indicated on the case, in the instructions or in the box. In addition, it can be viewed in the network control panel.
To view the connection information, right-click on the tray icon (desktop area in the lower right corner). Select "Network Control Center".
In the central part of the window that opens, find "Connection type" and click on " Wireless network connection" (or " Wireless network"In Windows 8). In the window that opens, click the "Details" button. Find the line "IPv4 Default Gateway". This is the address that must be entered in the browser.
First of all, you should click "Advanced settings". You will find the button at the bottom of the menu. After clicking it, several additional windows will appear. We are interested in a window called "WiFi". In it, open the "Security Settings" item.
The first line "Network Authentication" is the type of encryption that may not be supported by Android devices. Here you should select WPA-PSK/WPA2-PSK2 mixed. This is a mixed type of encryption that is supported by almost all modern devices, including Android. After installation, click the "Apply" button and reboot the router.
If everything is done correctly, then after the steps taken, the WiFi network authentication error when connecting Android devices will be eliminated.
Android WiFi Authentication Problem: Video
It is not uncommon for users to experience an authentication error when connecting to WiFi on Android devices. Most often, it is due to an incorrect password entry, although situations where a previously working connection suddenly refuses access also occur. About why this happens and how to deal with it - later in the article.
Causes of an Authentication Error
Any secure network implies the presence of a key - a code word that gives the user the right to receive and send information. If you enter the wrong password, then when connecting to Wi-Fi, the system will write: "Authentication error" and the connection protocol will be disrupted. An incorrectly entered combination of characters is the most common problem. To avoid this, it is recommended to remember:
- letter case matters;
- you need to check the input language;
- replacement of letters like "s" English with "s" Russian is unacceptable.
If, even after entering the password correctly, the device does not connect to Wi-Fi, the authentication error may be on the side of the router. Depending on the characteristics of the connected device, the following can be checked during connection:
- network SSID;
- MAC address of the router;
If at least one of the items does not match the data stored in memory, the smartphone or tablet will interrupt the connection protocol for security reasons. This discrepancy can be caused by:
- failure of settings in the router;
- malicious substitution;
- new.
Regardless of the cause, you need to troubleshoot the problem comprehensively: both on the connection device and on the router.
Android Devices: Troubleshooting Authentication
So, there was a Wi-Fi authentication error on Android: what to do in such a situation? First of all, you need to make sure that:
- the connection is made to that network;
- the password was entered correctly;
- Is there a limit on the number of connected devices?
- You are the only one with connection problem.
You can try to enter the password again. To do this, go to Settings - Wireless networks (wireless connection - depends on the version of Android). In the window that appears, find and hold down the name of the SSID, select “change settings” in the drop-down list. After entering a new password, try to connect again. If this does not help, read on.
In case it is your phone that does not connect to WiFi, the authentication error occurs on the device itself. To resolve this issue, you will need to take several steps.
- Removal of old information from memory. Unlike PCs, smartphones do not support editing, so the only way fix the connection problem - re-create it. To delete, you need to go to Settings, click on the wireless connections tab (depending on the version, the names may be different). After selecting the desired network, hold your finger on it and select delete in the menu that appears.
- Restart WiFi. You need to turn WiFi mode off and on so that the required SSID is found again.
- Reconnect. When WiFi is detected, you will again be prompted to enter a passphrase. If it is hidden, then you can add the SSID yourself. To do this, go to Settings - WiFi - Advanced settings - Add new. In the window that appears, you need to enter the name (SSID), security protocol (most often WPA / WPA2 PSK) and password.
If all the points are completed correctly, the authentication error when connecting to Wi-Fi on the phone should disappear.
If the tablet does not connect to Wifi, the authentication error is corrected in exactly the same way.
Today we will consider one problem that users of smartphones and tablets very often face. And in this case, it doesn’t matter what brand your device is. It can be Samsung, LG, Sony, Lenovo, etc. We are talking about an authentication error when connecting to Wi-Fi.
What is the reason? The reason is definitely not in the manufacturer. The error itself occurs when you try to connect to a Wi-Fi network on a smartphone or tablet. She says that you most likely entered the password from the Wi-Fi network incorrectly. This problem is easy to solve if you are trying to connect to Wi-Fi at home. It is quite another matter if we are talking about public networks - in this case, it is unlikely that anything can be done, unless you find out from someone the password for this Wi-Fi network.
What does the error look like?
An example of what the error looks like.
You turn on Wi-Fi on your device and connect to the network. Authentication in progress.
However, you cannot connect to the network and you see the message "Authentication failed".
How to get rid of the error?
First of all, reboot your router. Perhaps this is a common glitch. To reboot the router, you can unplug the wire from the outlet for 10 seconds.
If it doesn't help, you need to check if you entered the correct password. To do this, enter it again when connecting to the network.
Didn't help again? Perhaps someone changed your password while you were away. To find out, you need to go to the router settings. To do this, we take the router, turn it over and see a sticker where the connection details are written: the address (192.168.0.1, 192.168.1.1), as well as the login and password of the form admin 1234. Of course, the data may be different. In addition, if you changed the password from the router, you will have to remember it, otherwise you will not be able to get into the interface without resorting to resetting the settings.
Once in the router settings, we are looking for the Wi-Fi section, where the password should be shown. In our case, the password is located in the Wi-Fi section, the “Security Settings” subsection. We see the password (highlighted by an arrow):
We enter it into our tablet or smartphone when connected to the network. If everything works, great!
If it doesn't help, try setting the WPA/WPA2 encryption key type in the "Network Authentication" item. In addition, modern routers support various technologies data transfers, including 802.11b, 802.11g, 802.11n. If your device is not designed to support 802.11n (one of the most modern technologies), try setting 802.11b and connecting to the network.
Practice shows that most often the problem lies precisely in the password. Now you know where to look for it.
If you have other ways to solve the problem, we will be glad if you tell us about them using the comments.
At present, almost everyone modern man There is such a convenient and convenient mobile device as a smartphone. Naturally, each user wants to enjoy all its benefits, in this regard, access to the Internet is the main condition for obtaining all the capabilities of the equipment. And devices from the company will help you connect to the World Wide Web. Unfortunately, it is not enough just to buy a smartphone. To start accessing the network, you need to purchase a service from your mobile operator. It is important to choose the right tariff plan. Naturally, each consumer chooses the option that will correspond to his goals of using the Internet and financial capabilities.
It is equally important to know how to properly configure the connection. Usually, Internet settings on Highscreen come to automatic mode, and you just save them. In some situations, setting up the network the first time does not work, so you have to resort to manual configuration. If you are interested in how to competently and correctly configure the Internet on your own on Highscreen devices, then given material For you. Here you will learn how, thanks to GPRS, to set up world wide web. In addition, this process does not require a lot of time and effort.
Before you manually configure the Internet on Highscreen, you must:
Activate such an option in the settings as data transfer. This should be done in order to open data transfer access from the network itself. Such an item is located in the mobile network settings;
If your account does not have cash, refill it.
In order for you to know that you have a connection to the network, you should Special attention to the link indicator. The letter “E” should be present at the top of the screen, which means that there is an Internet connection. So, let's move on to the next step.
How to set up the Internet on Highscreen manually?
First, go to "Settings".
Second. You should open the “more” item, here we go to the “mobile networks” section.
Third. Select an option such as an access point.
Fourth. Select from the list of access the one that applies specifically to your operator and activate.
Fifth. Otherwise, you need to create a new access point. To do this, select a function such as a new access point.
Sixth. A window will open in front of you. There will be completely empty fields, fill them in.
Seventh. In the authorization type section, set it to normal. The rest of the fields can be left blank.
Eighth. Save the access point that you created.
Ninth. Look for a link indicator. If there is an "E", you did everything right.
Tenth, if nothing worked the first time, then restart your phone.
Wireless network- an excellent solution that successfully replaces wired Internet, and in some situations you can’t do without it at all: for example, tablets or phones can access the Internet either using an operator card or using Wi-Fi, which has become an indispensable attribute electronic gadgets in recent times. However, everything does not always go smoothly, for example, the problem of Wi-Fi identification on the phone is quite common, which we will talk about today.
First simple steps
As a rule, such a difficulty often occurs on devices running the Android operating system, so we will talk about them. However, it should be understood that the problem may lie not only in the mobile device, but also in the settings of the router.
Of course, both the router and the phone / tablet will not work without software, which can sometimes fail - you should never discount this option. First of all, you need to restart the router, and then the phone, and try to connect again.
If this does not help, you need to double-check how you enter the password - whether you entered all the characters correctly and in the right language.
Do not forget about the signal strength - it can easily happen that the network is within the reception radius and even shows several divisions, but in practice the phone refuses to connect.
The next step is to try to determine where the problem lies: connect from another device. It may be that the connection will occur - in this case, most likely, there may be some serious problem with the software on the phone and you will need to do a factory reset. This is done through the settings menu.
Well, if you didn’t manage to connect from another device either, then either you forgot your password, or someone got into the router settings and changed them without warning you about it.
In fact, it’s not the phone that catches Wi-Fi badly - this is a slightly different problem.
Understanding the settings
Now we need to get into the settings of the wireless access point to figure out what's wrong. We go into the browser and in the line for the address we write 192.168.1.1 or 192.168.0.1 - if it didn’t work and the menu didn’t open, then look at the label of the router: perhaps the manufacturer decided to change the standard address.
Now we need to enter admin in both fields - this password is the default, but can also be changed by the manufacturer. Typically, this information is displayed on the label of the device.
Next, we describe the sequence of actions using the TP-Link router settings as an example. First of all, we find “Wireless” on the left and the sub-item “Wireless security” - here we find the type of encryption set (by default it is usually WPA2) and in the bottom line we look at the password. It's better to change the checkbox to WPA2-PSKWPA-PSK mixed as some devices can't work with normal WPA2. You, of course, can completely disable protection and eliminate such a problem forever, but then everyone will connect to you and not too lazy.
You can change the password, but you must not forget that after each change you need to go to the phone menu, find the network and click "Forget network", and then try to connect to it again, entering a new password. After changing the password, also do not forget to save the changes and reboot.
A few more reasons
The problem of Wi-Fi identification can occur for several more reasons, which also mainly relate to the router and its debugging. One of them is the different frequencies at which the distribution point and the phone operate, especially if the router is very old.
This, of course, is an extremely rare option, but it’s worth trying to experiment with the operating modes: go to the settings, as mentioned earlier, find “Wireless settings” and there we try to change the parameters of the “Mode” window a couple of times. As a rule, 11bgn is universal, but you can try all modes: b is the slowest in data transfer and then ascending.
Well, another way to act if the Internet stops working on the phone is to change the network channel to be sure that no one clogs it and nothing bothers you. Here you need to enter the settings again and in the same place in the “Wireless settings” find the “Channel (channel)” parameter - it’s better to put one from 2 to 6. Then click “Save”, reboot and try to connect again.
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