The tablet loses wi-fi. Unstable work of the Internet over Wi-Fi: some tips to solve the problem. Invalid connection information

Even some 10 years ago, a wireless network at home was the lot of only advanced users who were ready to overpay several thousand for a radio module in a modem or router.
Today, almost every apartment in a typical high-rise building has a WiFi access point.
In general, this is good - people are no longer tied to wires: you can watch videos in bed before going to bed or read the news on a tablet with a cup of morning coffee. But on the other hand, a number of new problems arise that, in principle, cannot arise with conventional cable networks. One of these - poorly catches Wi-Fi at home or in the apartment.

The difficulty is that the user is left alone with this problem: the provider's technical support will not deal with this because it is not their problem, but the service center can only take your router or modem for testing and issue a conclusion about its serviceability or breakdown. They will not deal with a working device at all. Meanwhile, the main reasons for poor reception of Wi-Fi not that numerous. Let's list them.

Frequency response is overloaded

This is the most common reason, due to which residents of apartment buildings suffer. The fact is that the 2.4 GHz band, which is used by ordinary access points on routers and modems, has a limited number of radio channels. There are 13 of them in the Russian segment, and in Europe, for example, even less - only 11. And non-overlapping, that is, those that do not influence each other - there are only 3 in general.
Now start a search for networks on your laptop or phone.

If about 10 access points are found, similar to the screenshot above, then you shouldn't be surprised that Wi-Fi is bad at home! The reason - the range is overloaded! And the more points there are in the neighborhood, the worse your reception will be. Many forums and blogs advise trying to select channels in the hope of catching a less busy one. I think this is useless, since with such a density of access points, the load of each of the radio channels changes several times a day, which means that all the work on the selection will turn out to be stupid. There is a way out of the situation, but it will be expensive - this is a transition to another WiFi range - 5 GHz.

It is practically all free and problems with crossing frequencies will not arise for a very long time. Unfortunately, you will have to fork out for a new router (at least 3000-4000 rubles) and Wi-Fi adapters for all devices (1000-1500 rubles apiece). But on the other hand, the problem with the "neighbors" will be completely resolved.

Incorrect router location

This reason for poor WiFi signal reception is also very common both in apartments and in private houses. The culprit here is most often the installer from the provider. To put the router faster and save the twisted pair, they put the access device either directly in the corridor or in the nearest room. After that, they put a laptop next to it, set up access and show it to the subscriber. By itself, everything works fine and the master is quickly removed. And then the most "fun" begins - the user discovers that in the distant rooms of the house he catches Wi-Fi very badly, or there is no reception at all. But you just had to spend an extra 5-10 minutes and choose the right location for the access point. In the apartment, it will look like this:

That is, you need to put the AP so that it covers the dwelling as much as possible. You can walk around the corners with your phone or tablet and check where the signal level is, and then adjust the location of the router, taking into account the required coverage area.

In a large private home, the situation can be more complicated. If it has several floors and concrete floors, then it is best to additionally install WiFi repeaters - repeaters on the upper floors.

Connecting them to the main router not via WDS, but with a cable, is to avoid a loss in speed.

Advice: Never try to bring your laptop, tablet or phone as close to the access point as possible - the effect can be completely opposite: the signal quality may become even worse than it was at a distance. There must be a distance of at least a couple of meters between the devices.

Router software settings

Any wireless WiFi access point is a combination of not only hardware, but also software parameters, each of which can affect the quality of the wireless network coverage. Incorrect configuration or selection of device characteristics can easily cause the connected clients to poorly catch Wi-Fi. So, on many modern routers, in the advanced settings of the wireless module, you can find the parameter Transmit Power Is the signal strength with which the access point is distributing WiFi.

I have repeatedly met devices where it was exposed at 40% or even only 20%. This may be enough within one room, but in neighboring rooms the signal level will be low. To fix this, try increasing the "Transmit Power" parameter gradually and check the result. It is likely that you will have to put everything 100%.

The second parameter, which also has a very significant effect on the coverage area and the data transfer rate in a wireless network, is Mode... The fastest and longest "range" is the 802.11N standard.

Therefore, if your Wi-Fi network does not catch well at home, try forcibly setting the "Only 802.11N" mode. The fact is that due to some circumstances, in mixed mode (B / G / N), the access point can switch to a slower mode G. Accordingly, the quality of the network coverage will be lower.

Weak antenna

Now let's go directly to the hardware part of the access point. Many users, having bought the simplest and cheapest router, hope that it will emit a signal like a powerful military radar, breaking through all walls and ceilings in an apartment or house.
Let's take a look at a typical representative of the economy class - the D-Link DIR-300 D1 wireless router.

As you can see, it does not have external antennas and even lacks a connector to connect them. A weak 2 dBi antenna is hidden inside. It is quite enough for a one-room apartment. And only ... For a big three-ruble note or, even more so, private house, the power of this device will not be enough at all, which means you need to buy something more powerful. For example, let's look at the same model - ASUS RT-N12:

On the left you can see a simple version with 3 dBi antennas, which is suitable for a small apartment. And here on the right is the same router, but already a modification with amplified antennas at 9dBi, which should be quite enough for a large private house.

Do not forget that in order to improve the quality of work in the WiFi network, you can strengthen not only the router. An additional antenna can be connected to the wireless adapter of the computer:

But the owners of laptops and netbooks are out of luck - their devices do not have an RP-SMA connector, which means that connecting an external antenna is impossible in this case.

Note: If your range is overloaded, which I talked about at the very beginning of the article, and you hope to solve the problem of poor Wi-Fi reception by replacing the router antennas with more powerful ones, do not waste your money, because this most likely will not help you. The "noise" of the air will not go anywhere, which means that even if the signal level becomes higher, the data transfer rate and stability will constantly drop. In addition, you and your neighbors may start a so-called "cold war", when everyone will amplify the signal in different ways. And the solution, in fact, is only one - the transition to the extended range.

Hardware malfunction of the device

Do not forget that bad quality of soldering contacts can be the reason for a bad signal of the wireless network. A friend of mine shoveled his entire network at home, changed the router several times until he accidentally discovered that the connected iPhone was working fine, and the laptop practically did not see the network. As it turned out, from the shaking in the bag, the poorly soldered contact of the internal antenna of the laptop fell off and, accordingly, the adapter began to catch the Wi-Fi home network very badly.
By the way, I have repeatedly heard that on many smartphones and tablets, both cheap and expensive, there were similar cases.
So, if you suddenly have such suspicions, just connect another wireless device to the access point and watch it work. It will immediately become clear who is the culprit of the problem!

If you notice that your Wi-Fi is using a lot more battery power than usual, or if it is connected but the Internet is not working very quickly, then you may have a poor Wi-Fi connection. Wi-Fi problems can occur anywhere, for example, in rooms with thick walls, and there are many reasons for their occurrence. Among them, we will single out a bad Wi-Fi signal.

Below is a selection of tips on how to improve Wi-Fi on your Android smartphone.

Use apps


This may be one of the easiest options for quickly improving your Wi-Fi signal quality, although it is least proven. The fact is that many people argue whether such applications can improve W-Fi connection, or simply claim that they can. Whoever says anything, placebos are powerful! Anyone with a smartphone can actually try out popular apps available in the Play Store, such as Wi-Fi Booster & Easy Analyzer, a free app that doesn't require users to root.

Avoid Bad Connections


There is a nice little option in the Android OS settings menu that can help your phone avoid low-quality Wi-Fi connections. In other words, when the smartphone checks for available networks, it will not attempt to connect to networks with poor signal strength. All this will help you avoid frustration and save a lot of battery power.

To enable the above option, go to the "Settings" section, then to "Wi-Fi". Here you should select the menu button and click on it, then select the "Advanced" item. In a second, you will see a window where you can check the box to enable the "Avoid Bad Connections" option.

Use a homemade radio antenna


If you really need a better Wi-Fi signal, then you can make your own miniature parabolic antenna. In fact, this is a mini analogue of a large radio or satellite dish. For the antenna dish, you can use a small metal bowl or a cut aluminum soda can. Of course, such an antenna cannot be called very practical when you use it every time a bad signal occurs, but, you must admit, such an antenna looks cool.

Update your radio or smartphone software


If you receive updates from your carrier or manufacturer over the air, then this probably does not apply to you, but if your smartphone has custom firmware, then one day you will come to the conclusion that you should manually update the radio or OS version. It is very easy to do this, and we will not go into detail about it. Let's just say that there are various instructions for performing such actions on the Internet. We will also add that your smartphone should have latest version Android, thanks to which it improves overall performance, and updated Wi-Fi drivers are available.

Forget about bad connections


If you've dealt with a million different Wi-Fi connections and found that half of them don't work for you, please do yourself a favor by excluding those networks through the W-Fi settings. If you do not do this, your phone will again try to establish connections with a network that has a poor signal quality, and this will negatively affect the performance of your phone's battery.

Do not block the Wi-Fi antenna


Many smartphone cases can degrade the Wi-Fi signal, especially if they contain metal used to make the case durable. To find out if your case is affecting the Wi-Fi signal quality, run an Ookla speed test on your smartphone with the case removed. Then, being in the same place, put the cover back on the device and do the above test again. If you see a difference in the test results when the case is on the smartphone, then you should look for another case.

Find out which Wi-Fi hotspot is the best


One option would be to use a Wi-Fi analyzer app, which touches on three aspects. Firstly. It can provide the best communication channel for your particular network. Without going into details, let's just say that this application allows you to optimize the network, and you do not need to have a lot of technical knowledge to do it yourself.

Secondly, such an application is very suitable for use in an office or other public places, as it can find out which network has the most stable communication channel. And thirdly, using the above application, you can easily find out the IP address, information about the network gateway, DNS server, etc. Of course, all this is not very important, but in some cases it is useful.

Improve wireless network access


Another simple thing that can significantly improve Wi-Fi connection at home is to optimize the location of the router. It is often in close proximity to a telephone or cable outlet, but this is not a great phenomenon. We recommend changing the location of the router away from your smartphone, and at the same time paying attention to an application called Wi-Fi FDTD Solver, thanks to which you can find out how your modem works in a matter of seconds.

You are in trouble with the bad Wi-Fi signal? What have you done to improve it?

Sooner or later, each user is faced with the fact that for some reason wi-fi does not work on the phone. This article is intended to help you identify the sources of these common problems and find the fastest and fastest effective method their elimination.

Malfunctioning wireless is usually caused by several reasons:

  • Incorrect Wi-Fi settings.
  • Errors in the operation of the router itself.
  • Invalid parameters of the mobile device.
  • Action malware or antivirus software.

Below we will go over each point in detail and formulate troubleshooting recommendations. All of the following is true for Wi-Fi on an Android phone, iOs, and for other operating systems.

Eliminating the problem

You can only cope with the problem if you accurately determine its cause. To do this, you do not always need to contact a specialist. Many errors that relate to, for example, wireless settings, you can identify yourself. If the Internet slows down, works slowly, this may also be due to third-party factors: for example, network congestion when many gadgets are connected to it. Sometimes slow Wi-Fi is a reason to check the computer itself or the communication line of your Internet provider.

Incorrect Wi-Fi setup

First of all, attention should be paid to how the Wi-Fi access point is configured. To do this, you need to access the router's menu through a browser: but you need to enter a number of characters in the address bar, the combination of which is individual for each device. Usually this data is on the back of the router, look for the Login and Password lines, they will be required in the next step.

Enter your username and password. If you managed to get access to the menu, first of all, you should pay attention to the parameters of the wireless mode. A few simple options are relevant here:

  • Channel - Auto, but you can try to put a different channel.
  • Mode - 11 bg Mixed, but changing the parameter to 11 bg only can give a positive result.
  • Channel Width - auto.
  • The baud rate, if any, is set to the maximum value.
  • Region has little effect, but could theoretically be the source of a malfunction.

If everything is configured correctly, but the Internet is still not functioning correctly, you should contact the service center or look for the problem elsewhere, for example, by contacting your provider. The device may be technically faulty, therefore it is recommended to check it immediately after purchase.

Router settings

You should check if it is possible to go online at all. If it is not there as with personal computer, and from another device, it is advisable to check whether the router itself is turned on, whether it is working correctly. This is indicated by indicators.

The power indicator should be green. There is a system indicator next to it, which should be blinking. The next indicator - WLAN - shows whether the wireless connection is enabled on the router itself or in its menu. Next are the numbered LAN ports, one of which must be connected to a cable. Ideally, it should blink too. They are usually followed by WAN, the indication of which indicates that the router is connected to the Internet.

In some cases, reconnecting helps.

Incorrect time or date

Wi-fi on a mobile device can function poorly due to such trifles as the wrong date - this is one of the first on the list of common reasons for Internet problems. You just need to go to the time settings section to set the correct values. It is important to take into account the time zone correctly.

Wi-Fi password error

Other possible reason- password. If the connection to the access point on the phone occurs automatically, this error occurs when the user changes the password. In other words, the password has been changed, but the gadget itself “does not know” about it and automatically enters the old one. The solution, again, is simple - to re-create the connection and enter the correct password.

Malware and antivirus programs

Viruses that the smartphone "caught" in the network can also interfere with the correct work of Wi-Fi. If you suspect an infection, it is advisable to install an anti-virus program on your phone and conduct a scan. There are many such programs, but they are usually used by well-established brands like Kaspersky and ESET Nod.

The other side of the coin: Antivirus and other security software such as firewalls can themselves be the source of problems. Antivirus creates a kind of "shield" for filtering traffic, which sometimes affects communication. If, after removing the antivirus software, the connection works correctly, in this case you will have to try another software or refuse it.

Software crashes

Many users experience wireless communication problems due to software malfunction. For example, when the user installs an alternative firmware or any other intervention in the factory characteristics of the software is carried out.

Problems with the android system are also indicated by other errors in the operation of the gadget - constant, systematic freezes, arbitrary shutdown, and others.

In this situation, you can make a Hard Rest - it will return the system to the factory settings.

If the matter is in the phone's firmware, this will help to solve it. But you need to know that "non-native" firmware, thus, is not deleted.

When the source of the malfunction lies in the router, often you just need to reboot the router. This is not always easy, since some models are not equipped with an on / off button.

If the device itself does not have a reboot function, you can simply unplug the cable for 10-30 seconds.

It can also be done via the machine's menu. The procedure for entering there is described above. This method is relevant if it is difficult or impossible to get to the router itself. The "Reboot" option in different router models is located in different parts of the menu, but, as a rule, on the system settings tab.

If an error in the operation of the Wi-Fi is due to software failures, you can try to restart the device. In addition to the standard "Restart", there are several more radical and fundamental methods:

  • Via the menu: "restore and reset".
  • By entering the number * 2767 * 3855 #.
  • Through the Recovery Mod - you can call it by holding down simultaneously "Home", "Power on" and decreasing the volume. Next, select the "Wipe data" section.

Other problems

If these recommendations did not help restore the normal functioning of the wireless connection, it may be a technical malfunction of the Wi-Fi module itself. In this case, only a qualified specialist can help.

Ask a question to the virtual expert

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Conclusion

Issues with the functioning of Wi-Fi, as a rule, are solved easily and without the involvement of specialists. But it is worth remembering that independent technical intervention can damage the car until the functionality is completely lost. If connection difficulties are not resolved using available methods, it is better to contact the service center.

Video

I want to tell you about a simple and quick way solutions to the problem of poor Wi-Fi on your smartphone or tablet.

This information will useful to people, who has the Internet on a computer that is connected to the router via a cable, works fine, but on mobile devices the internet is junk.

Most likely the problem is that the router is working on a busy channel and because of this, the data transfer rate drops.

To check this, install a simple application on your smartphone.

Run the scan and the program will give you a list of all networks working in the vicinity, and at the bottom you will see the channel numbers of these networks.

My network is called setka, and the neighbors' network is 247. They worked on the same channel and interfered with each other.

What I just didn’t do, I rebooted the router, updated the firmware - nothing helped, the Internet was disappearing all the time.

Then I moved my network to channel 13 and all problems were gone.

If you install the application and see that your network is working on the same channel with another powerful network, then you need to change the channel.

In order to change the channel, you need to go to the router settings.

This is done simply. On your computer connected to the router with a cable, enter 192.168.0.1 or 192.168.1.1 into the address bar of the browser

Enter the access password, if you have not changed it, then usually the password is Admin, login Admin.

Each router model has its own settings program, but you just need to find the Wi-FI network settings and select the freest channel that you found using the FAnalyzer Wi-Fi app.

Hello. Suddenly, WiFi on the phone began to work poorly (sometimes it turns off, the speed is low). Works fine on other phones and computers. Mobile Internet the phone itself works great too. On the Internet, the same advice is everywhere. About the channels, about the settings of the router, etc. But all this does not apply to my problem, everything is checked. No viruses (at least that's what several antiviruses said). The system update is automatic, the latest version is installed. Help me please. So I don't want to go back to the factory ones 🙁

Answer:

Hello. You have not written the most important thing, how the phone works with others. Wi-Fi networks and. As far as I understand, it is also unstable. If, when connecting to other Wi-Fi networks, the Internet is unstable, the speed is low and disconnects, then it is clear that the problem is in the phone itself (Android).

It's hard to believe that the problem is in Android, most likely something in the hardware. By the way, you are not using a cover? There are cases that have a bad effect on the reception of Wi-Fi networks.

It is also hard to believe that this is due to some kind of program, or settings. Try to remember after which it happened. In any case, you will most likely have to do a factory reset. And if it doesn't help, then carry the phone to the service.

Articles with solutions to various internet connection problems on Android devices:

Write in the comments about your cases with an unstable Wi-Fi connection on Android devices. Or when the phone / tablet doesn't connect to the internet at all. I will try to suggest something. I also ask you to share solutions to these problems. If you have any useful information on the topic.