The phone (tablet) does not connect to Wi-Fi, writes “Saved, WPA\WPA2 protection. Phone won't connect to tp link router

21.10.2019

There are many reasons why the phone won't connect to wifi. Mobile phones are able to provide us access to the Internet, wherever we are.

However, sometimes it turns out that the phone has stopped connecting to a non-wifi network.

In most cases, the smartphone tells us what the problem is by displaying characteristic notifications on the screen.

Sometimes, when the connection indicator shows that the phone is connected to Wi-Fi, you still cannot get online, the pages do not load.

In this case, it makes sense to look for the notification "" in the network settings, which often appears in such cases.

In this case, you can try to solve the problem in two ways. Often such a problem occurs due to the fault of the router.

Most likely, from whatever device you try to connect to this network at that moment, from a laptop or tablet, the result would be the same.

The easiest solution is to try turning the router off and on again. Let it "cool down" for about 10 minutes and try to connect again. It is likely that the problem will be fixed.
In addition, this notification may appear if the Internet is not paid for at home. This problem is also completely solvable.
If the Internet is paid for, the wifi router was turned off and on again, but you still can’t access the Internet, then the problem is most likely on the part of the operator, and therefore, it’s worth calling customer support.
Sometimes you will have to do the same if you cannot access the Internet only from your phone, although you can do it from other devices.

Important! Regardless of the connection problem and how you solve it, after taking action, you must turn off the connection on the device. Then turn it on again to check if it works.

Obtaining an IP address...

Another common problem occurs during the very process of connecting the phone to a wifi router. The connection process stops when the phone tries to get an IP address.

The notification "Obtaining an IP address ..." may be near the name of the network for hours. Of course, you can’t go online, because the phone is not connected to it.

The problem is not solved as easily as the previous one. However, the first step is the same - turn the router off and on again after 10 minutes. If you still can't connect after that, go to the second step.
Not the most convenient way is to assign a static IP address on the device. You actually prescribe the parameters of the network to which you connect at home.
However, when using this method, there will be problems with accessing the Internet through other networks. In order to do this, you will have to erase the IP address and change its type.

You can set a static address like this:

When you click on the name of the wifi network, an item with the name "Advanced settings", "Advanced settings" or the like will appear in the window that opens;
Check the box next to this item;
After that, in the "IP Settings" or "IP Settings" section, change the type of network protocol (DHCP) to static and write down the IP.

Before trying to connect to the Internet through another network, change the protocol type again from static to automatic.

Authentication error

A common reason why you can't connect to the internet.

This is the notification that the phone gives after trying to connect to the network. wifi at home, actually means that the network did not recognize your device as capable of receiving wifi.

The most common reason why this happens is an incorrect network password. Check it carefully and try to go online again. If you are sure that the password is correct, proceed to the next step.

The usual advice. Try turning your router off and on again after a few minutes. This is a universal recommendation, which is given even by customer support operators.
More hard way- try to make changes to the router settings. To do this, go to the settings page through the browser.

Select the following data in the router settings. WPA-PSK version, encryption - AES. We enter the password.

On most routers, these should be only numbers, no more than 8 pcs. Set the WPA\WPA 2 security mode to personal.

These options make connecting to wifi as easy as possible. However, such actions are necessary only when nothing else has helped.

And besides, there are reasons to believe that there are compatibility problems, for example, the type of encryption used by the router and the phone.

Modern mobile devices may have different power, different functionality, but they are all designed to work with Wi-Fi and the Internet. And for sure, every user of a mobile gadget at least once encountered a situation where the phone or tablet does not connect to wireless network. In this article, we will look at typical mistakes that appear on Android devices when trying to connect to Wi-Fi, and we will tell you about methods for eliminating them.

Typical Wi-Fi Connection Errors

When successfully connected to a wireless network, a message should appear under its name Connected. Any other signature indicates that it was not possible to connect to the network for one reason or another. In practice, when trying to connect to Wi-Fi, the following error messages are most often encountered:

Message Saved.
Messages Authentication error or Authentication problem
Infinitely hanging message Obtaining an IP address...
An authentication error has occurred.

Saved message under network name

Most likely cause: Weak signal.

Solutions:

try reducing the distance to the access point. If the error disappears when the Android device approaches the access point, it means that it was observed due to the fact that the smartphone’s transmitter power was not enough. This, in turn, can be not only due to the large distance of the mobile device from the router, but also due to clogged air - when there are a lot of wireless devices and networks around.
try changing the channel on the router to a freer one.
try changing the channel width in your router settings.

"Authentication Error" or "Authentication Problem"

Reason #1: security mode and encryption type incompatible with the client device.

Solution: If WPA2-PSK is set, try changing it to WPA-PSK.

Reason #2: invalid security key.

Usually, if the security key does not match, the Android device will prompt you to enter a password. However, there are other manifestations.

Solution: enter the correct security key. Be careful with layout and register. It is strictly forbidden to use Cyrillic in SSID and passwords, and you can get confused in the registers. If in doubt about your password, temporarily set a 10-digit key on your router.

Reason #3: weak signal.

Solution: Test the network from a closer distance from the router. If the problem disappears when approaching the router, try to find a freer wi-fi channel and install it on the router. Then reconnect to the network.

Infinite Obtaining an IP Address

Reason #1: weak signal.

Solution: try reducing the distance to the access point (read above in paragraph 2.)

Reason #2: The MAC address filter is enabled on the router. Your device's MAC address is not whitelisted or blacklisted.

If obtaining an IP address is blocked by the MAC address filter, errors may also appear on the smartphone:

Failed to get IP address;
Network disconnected due to slow internet connection.

Solution: whitelist your device's MAC address or remove it from the blacklist. If the router is not yours, ask your administrator to complete these steps.

"An authentication error has occurred"

Reason #1: Weak signal.

Solutions:

if possible, reduce the distance to the access point;
P try to select a free channel.

Reason #2: Invalid network security key.

Solution: Enter the correct security key (read above in step 2.)

Below we provide a checklist for troubleshooting most wireless network problems. If you do not want to delve into each case described above, follow the steps listed in sequence. If the problem persists after performing the action, proceed to the next one.

Disconnect from the wireless network on your Android device. To do this, click on the network name in the list and hold it for more than a second. When the menu appears, select Forget network. After that, connect to the network again by entering the security key.
Reboot your router and Android device in order to eliminate the possibility of unexplained crashes and freezes. After rebooting the router and gadget, wait a couple of minutes and try to connect to Wi-Fi again.
Check the correctness of the wireless network security key (popularly “wi-fi password”). Set a key of 10 random numbers so as not to get confused in layouts and registers.
Check your MAC address filter settings. Try to temporarily disable the filter and connect to the network.
Check the region settings on your router. Please enter the correct region. Try to choose Russia, then USA, then Chile. This can affect the sensitivity of the receiver and the power of the transmitter. Keep in mind that many router models may not have a region setting.
Install on the router WPA2-PSK security mode and AES encryption type. Save your settings and wait a couple of minutes. Delete the network on your Android device and try to connect to it again.
Set Mode Mixed 11b/g/n for maximum compatibility with various devices and standards. Save the settings and try to connect to the network after 2 minutes. For reference: if you install 802.11n only, only those devices that support the standard will be able to connect to the router. n.
Set the channel width setting to Auto. Save the settings and after a couple of minutes try to connect to the network again.
Do a hard reset of the router and set it up from scratch. There are times when this action fixes a router failure.

Illustrations for paragraphs 5 ,7 and 8 :

Cautions

Attention! Use only Latin characters and numbers in SSID and security keys! If you use Cyrillic in these fields, you may encounter the following problems:

you will not be able to connect to Wi-Fi from client devices;
The router may freeze and you will have to do a hard reset.

Remember! After making changes to any wireless network security setting on the router (key, security mode, encryption type), delete the network on Android devices and reconnect to the network. Don't wait for your smartphone or tablet to prompt you to re-login to the network. Yes, in some cases, the Android OS detects the changed parameter better computers with Windows. But it may happen that after changes on the router, your device will simply start to issue authentication errors.

Users regularly connect modern Android smartphones to a laptop or PC to reset music, photos or other necessary files. In some situations, the computer does not detect the phone via USB, which makes it very difficult to work with it. There is a certain list of reasons that prevent the device from being recognized.

The computer does not recognize the phone via USB - reasons

Everything possible options problems faced by users can be divided into software or hardware. In the first option, the problem is in the settings, drivers or computer system, in the second - in the cable, USB port of a smartphone or laptop. Almost all problems can be fixed, but before trying to fix the connection of the phone to the computer via USB, try restarting the PC and the device. This simple procedure often helps, especially with models of devices from Lenovo (Lenovo), Samsung (Samsung), HTC, FLY, LG, Nokia (Nokia).

The phone does not connect via USB to the computer, but it charges

A very common problem with devices is when the phone is not displayed in the computer via USB, but the battery charge indicator is on. The smartphone responds to the connection, but the system does not want to display it. To determine the cause of the failure, you can perform the following actions:

Move the power cord to a different port on the laptop. Now most models are already equipped with version 3.0 connectors (has blue color), but you need to use 2.0. On stationary versions, the connection should be made from the rear side of the case, and not from the front panel.
Try a different cord if the sockets match. This will help you troubleshoot the cable. If one of the cores of the twisted pair is broken, then the smartphone can continue to charge, but not be detected.
Inspect the socket of the device, if there is any debris or dirt inside that breaks the connection of the contacts and makes it difficult to find the device.
Try connecting the machine to another PC. If it is defined there, then the problem is definitely in your system: there are no drivers, a virus, the power on the laptop is incorrectly configured. This problem will be described in more detail below.

The computer stopped seeing the phone via USB

Often there is a situation when the device was previously detected, but for some reason it suddenly stopped. A common reason why the computer does not see the phone via USB is that port drivers have crashed. Due to software failures, the latter cease to function correctly, are not able to find any connected devices. In this case, you do not need to reboot the device. You need to do the following:

Find the "native" disk for the motherboard. The set must contain all system files for the USB ports to work correctly.
If the disk is lost, find the developer's website on the Internet. Manufacturers, as a rule, lay out all the necessary software in free access.
Reinstall drivers.

After the PC has finished installing the files, you need to restart the computer. Only at this point is it time to check if the system can recognize the device. If these steps did not help, make additional settings:

In the control panel, go to the "Power" section.
Select "Setting up a power plan" (for laptops).
Click "Change advanced settings..."
From the list, select "USB Settings", click the plus sign.
Then expand the "Pause USB Port Option" section.
Set "Disabled" for battery operation, mains operation.
Click "Apply" and "OK".

In addition to problems with port drivers, files for the Android device itself may disappear. To check this, you should open the device manager, find out if there is an exclamation icon in the "Portable devices" section. Check the list for your phone. If it is not there or there is a warning sign, you should do the following:

open the device and click "Uninstall driver";
turn off your mobile device;
reconnect it;
wait until the system installs the connected device again.

The computer does not find the phone via USB

Sometimes the situation is such that the laptop does not initially find the device. If the reason is not a broken cord or port, then you should carefully check why the computer does not see the phone via USB. The causes of problems can be such moments:

Android system settings. Modern mobile devices have several connection options: only charging, storage, modem. By default, most of them are set to the first value in the list. As a result, the device is charging, but not displayed by the system. As a rule, the top menu of the device, when connected, offers to change the type of connection, you just need to select the required parameter. If this does not happen automatically, you need to go along the following path: Settings -> Memory -> Properties. Here you should set the required type of connection.
Sometimes a smartphone is used as a modem, which does not recognize it as a drive. Disable this option via settings.
Turn on Windows Update, which will allow the PC to download the latest, up-to-date drivers for all connected devices. When connecting, do not forget to unlock your mobile device.
When sold together with a smartphone, a disk is provided on which there is a program for connecting the phone to a computer via USB. Use it to discover the device.

The computer does not recognize the phone via USB - viruses

Malicious programs that have entered a PC system can behave in completely different ways. Sometimes they become the reason why the computer still does not see the phone via USB. Virus scripts disrupt the operation of various devices, remove drivers, block data transfer. The risk of infecting a smartphone is extremely low, because viruses for Android are extremely rare. However, to protect yourself from infection, you should check Windows using specialized programs:

Dr. Web;
antivirus kaspersky;
Malwarebyte.

What to do if the phone does not connect to the computer via USB

If your system still does not see the device after all the above steps, but you are 100% sure that the problem is not in the USB cable or socket, the device was previously detected, there is only one way out - Hard Reset. A hard reset will result in the loss of all data from internal memory phone and reset it to factory settings. This will eliminate the possibility of a software failure on the part of the mobile phone.

All data that you store on the SD card or cloud services will remain unharmed. This option should be used in extreme cases - provided that all other methods did not give the desired result, and you are sure that the problem is in the device settings, but not the PC. For each model, be it Samsung or NTS, the manufacturer has programmed hardware buttons that make it possible to perform a hard reset. You can also enable it from the settings if the device turns on and you have access to them.

Video: how to connect your phone to a computer via a USB cable

A smartphone without the ability to connect to Wi-Fi is not a smartphone, but just a dialer, because the Internet is through a network mobile operator is quite expensive, and the quality of such communication often leaves much to be desired. Meanwhile, problems with connecting to Wi-Fi are a very common phenomenon and in most cases easily solved. Let's talk why mobile phone not connecting to Wi-Fi and how to fix this problem on your own.

How to determine where the problem is

Causes of connection failure WiFi networks can be both a phone and a distributing access point. Mobile phone problems can be suspected in the following cases:

The phone receives a Wi-Fi signal only in the immediate vicinity of the router (any). It is necessary to move away - and the connection disappears. Other devices connect normally.
The phone does not connect to any access point, although it detects them.
The list of Wi-Fi networks on the phone is always empty, while other devices see the nearest networks.
The connection problem arose after some actions with the phone - updating the firmware, installing applications, changing settings, falling on the floor, etc.
The phone stopped connecting to Wi-Fi after moving to another region.

And in these situations, the access point is most likely to blame:

No device connects to it.
Devices connect but no Internet access.
When you try to connect, some messages or windows appear on the phone screen (not for entering a password). And when establishing a connection only with this network.
The connection problem arose after some actions with the router - moving to another location, updating the firmware, changing settings, etc.

Often there are ambiguous situations where the smartphone, the access point, and the transmission medium can be the culprit. For example, when the phone is constantly obtaining an IP address, or when, after a short connection attempt, the message “Saved” or “Authentication error” appears next to the network name.

Reasons for connection problems

Possible sources of problems in the phone:

Incorrect network settings.
Blocking the connection by applications or malware.
Damage to the network structure operating system.
Hardware failure or failure constructive solution(for example, a weak antenna).

Possible reasons failure from the access point:

Tuning to a very noisy broadcast channel.
Non-optimally matched power of the WiFi signal transmitter.
Incorrect encryption settings.
Disable the DHCP server (required for client devices to obtain IP addresses).
Reaching the limit of simultaneous connections (common in public networks).
Blacklisting the MAC address of the phone, using parental controls.
Software and hardware failure, including due to overheating.

Media problems:

The distance to the access point is too far (weak signal).
electromagnetic interference.

Algorithm of actions for diagnosing and eliminating a failure

We will not consider the inability to connect the phone to a public or corporate Wi-Fi network within the framework of this article, since the user cannot manage its settings. Consider the situations that arise in the home networks of owners of phones and access points.

So, in order. If the action does not help, go to the next one.

The access point settings are shown using the TP-Link AC 750 Archer C20 home router as an example. On other routers, the names of sections and functions may differ, but not globally.

Check if Wi-Fi is running on your phone. Go to the wireless settings and make sure the switch is set to the "Enabled" position. If the function is active, turn it off and on again. Reboot your phone.

Make sure the hotspot is working and check if other devices are connecting to it. If not, restart your router. Make sure it's not overheated.
Place your mobile phone in an area with good Wi-Fi reception. So that between him and the router there are no thick concrete walls and sources of electromagnetic radiation ( Appliances, power cables).
If an authentication error occurs when you try to connect, someone in the family or you yourself may have changed the password for connecting to your home network, and your phone is trying to communicate with it with the old password. To make the mobile device forget the old password, open the connection context menu with a long touch and select "Delete" or "Forget this network". The network after that will remain in the list of available, but the next time you connect, it will require you to enter a password.

Enter the correct password in the next field.

Remove applications from your smartphone that were installed or updated shortly before the problem occurred. Check your device for malware infection. Disable or temporarily uninstall VPN clients, antivirus, and other programs that are supposedly used to protect networks.
If the connection is not restored or another error occurs, for example, an endless receipt of an IP address, open the "DHCP server" section in the control panel of the router and make sure that it is enabled. Your phone's IP must fall between the DHCP start and end addresses and not be repeated on other devices.

If the problem of connecting to your home hotspot occurs not only on your phone, open the basic wireless network settings in the router control panel and experiment with switching broadcasts to different channels. If the default channel is very noisy, the connection will either be impossible or extremely unstable.

Check which standard your wireless network uses. If your phone is an old model and the router is set to the modern 802.11n or 802.11ac standard, the connection will not work. For the new router to be compatible with older client devices, you must switch it to 802.11bgn (mixed) mode.

Inspect your Wi-Fi traffic protection settings. Open the "Wireless Security" section and make sure that the encryption method that is compatible with your smartphone is selected. The WPA2-PSK encryption type is the most modern and most reliable; it is supported by all mobile devices released in the last 10 years. If your phone is very old, it may only support WEP mode. In addition, the encryption system sometimes fails. To check this version, temporarily disable protection. If you can connect to the network, use WEP encryption later on, or delete the network and create a new one.

Check if the MAC address of your smartphone's network adapter is included in the list of those who are not allowed to connect. You will find information about this in the MAC address filtering section.

One of the rare reasons for not being able to connect to an access point is an incorrectly selected Wi-Fi transmitter power level. To check this version, go to "Advanced Wireless Network Settings" and change the power level to higher or lower.

What to do if nothing helps

If you are inclined to believe that the culprit of the problem is the phone:

Do a factory reset of your operating system.
Reflash the device with a known correct firmware.
Contact a mobile device repair service center, as the failure may be due to a hardware failure. It cannot be removed at home.

If the prime suspect is a router:

Ensure the machine is well cooled by installing it in open space away from heat sources.
Reset the device to factory settings and set the values you need again.
Update your router firmware to latest version or install an alternative - WRT-DD, if the device supports it.
If the device is older than 3-5 years and the failure occurs not for the first time, consider replacing it. Unfortunately, modern mass-segment routers quickly run out of their resources and rarely serve their owners for a longer period.

When buying a new router, don't prioritize the most budget models, since the bulk of problems with connecting to Wi-Fi are found among them.

The phone does not connect to WiFi - it's just terrible why this is happening, we know the answer, read all the reasons why the phone does not connect to WiFi here!

First you need to find the reason why the phone does not connect to Wi-Fi. Let's start with this one.

Possible reasons

If your smartphone is not connecting to your home wireless network, then there may be several reasons for this:

wrong ;
incorrect settings on the router itself;
incorrect password;
blocking the device in the list of the router.

Important! Often the problem of what is not connected with the fact that there is no corny connection. So, if you followed the instructions below and didn’t see the result, try checking other indicators!

Now consider each of their reasons and try to clarify why the phone does not connect to WiFi router.

Mobile device setup

First of all, we check whether Wi-Fi is active, if the indicator wireless connection on the device is lit in normal mode, then we take the following actions:

First of all, delete the saved connection:

Still very often there are situations when WiFi connects but pages do not load, it’s quite in large numbers case it lies in the usual date and time settings! Yes, yes, just set the correct data on your smartphone or tablet!

In the event that this algorithm did not help, then you need to go to the router settings.

Modem settings

If the router has already been configured, but your new phone or friend’s device does not want to connect, then the matter may be in the settings of the WiFi connection channel.

You need to change the channel from "Auto" to 7 (or any other until the devices start working, but most often this is channel 7).

To do this, through a laptop or computer connected via patchcord, you need to go to the router settings:

Very often, a connection problem occurs on Windows Phone smartphones and it is solved by changing the channel.

Forgot router password

In this case, it can be viewed through a computer connected to this network. We have prepared a separate article for you on how to see the password from your WiFi.

If this option does not suit you, then you can make a Hard Reset of the router and configure it again (the link to our article on this topic was above):

If, after checking all the settings and carrying out the necessary manipulations, the phone still does not connect to WiFi, then most likely the matter is already in the WiFi module of the smartphone itself.

Reset your smartphone

The last option here is to reset it to factory settings:

Attention! All personal data on the device will be deleted, so we strongly advise you to backup files using any special application and synchronize contacts with your gmail account in order to restore them later.

Now you know what to do if your smartphone does not connect to the Internet via Wi-Fi. Also on our site you will find a solution to other popular problems related to Wai Fai and others. Using our instructions, you can quickly fix all the jambs and malfunctions in your computers and phones.