How to repair the mobile phone no signal failure, how to solve the mobile phone no signal?

If your phone has no signal or a prompt for an emergency call appears on the screen, it is recommended to try:

2.If it is a dual-SIM phone, please check whether the SIM card is activated: Settings - SIM Manager - SIM1 SIM2 - Click the SIM card icon - slide to turn on (the operation mode may be slightly different for different models of mobile phones).

3.If there is still no signal, it is recommended to turn off the SIM card and remove it, wipe the SIM card chip with an eraser, and then reinstall it.

4.If it doesn't work, try to change to another location to rule out whether it is caused by poor signal coverage in your location.

5.Try to change the network mode to 3G or 2G (do not select the auto-connect mode). Note: Some machines do not support changing the network mode.

6.Try to change another SIM card.

7.Update your phone's system version: Settings - About Phone (About Device) - Manual Update Automatic Update (Software Update System Update - Update). Note: Please back up the data (contacts, messages, **, etc.) in your device before upgrading.

If there is still no signal or emergency call is displayed after the above operations, please bring the purchase receipt, warranty card and device to the Samsung service center for inspection.

Ways to solve a bad mobile phone signal:

1. Check the mobile phone signal sign, if the signal is weak, try to get out of the weak signal area to a fairly wide place.

2. You can try to turn on and off the airplane mode to try to restore the mobile phone signal, or turn it off and restart.

3. The quality of signal reception can be improved by walking.

4. Pick up and call in a normal network environment, avoid bustling business districts, peak hours, bad weather, and stay away from electromagnetic interference zones.

5. The metal protective case will affect the signal reception of the mobile phone, if the mobile phone uses a metal protective case, remove the protective case and try.

Here take the Apple mobile phone as an example, first click the settings icon, click General, then click the restore button, click to reset the network settings, and then restart the phone, so that the problem of no signal on the phone will be solved.

What should I do if my phone has no signal? These are a few things to keep in mind.

Reboot, this method can be simpler and rude. When our mobile signal is not good, we can directly turn it off and restart the mobile so that we can reset our mobile signal, which is equivalent to restarting the connection of the mobile again, so this operation is really possible to improve the mobile signal.

Airplane mode, when many friends find that the signal of their phone is not good, they may always subconsciously want to turn off and restart their phone. This method is indeed feasible, but it is really cumbersome to operate.

Therefore, at this time, we also have the option to turn on the airplane mode of the mobile and turn it off after a while. Improving the cell phone signal with this action is actually the same as shutting down and restarting the phone, even if the phone is able to restart. Search for a network signal, but this does take much faster than restarting.

Plugging and unplugging the SIM card, nowadays, the SIM card of most mobile phones is placed in the middle frame card slot of the phone. In some cases, it is true that the SIM card may have a bad contact or have other problems, so we usually say it at this time. You have the option to reinsert and unplug some SIM cards, which can really fix a lot of problems with poor cell phone signal due to poor phone contact.

location, if we block the signal of the mobile phone indoors, then we may choose to walk to the room that opens, opens the window, the balcony, etc., because generally speaking, if we shrink the walls of the mobile and other closed buildings, if it is blocked, then in this case, in general, the signal of the mobile phone may indeed be much better than before.

I'm mobile, when my phone has no signal, send a text message to 10086, when the text message comes back, the signal will come, and then, you call ** to 10086. I always use this trick, and it's pretty smart.

The solution to the phone no signal.

What should I do if my phone has no signal?

If you are using a Huawei phone and the " " symbol appears on the signal bar of the phone's status bar, we recommend that you take the following methods to try to solve the problem:

1.Avoid using magnetic metal cases, magnetic stands, or magnetic chucks.

If your phone uses a metal case, magnetic case, magnetic bracket or magnetic chuck, it is recommended that you remove it and try it, as metal and magnetic materials can easily interfere with the signal and cause no signal on your phone.

2.Please rule out network causes.

1. Try changing your current location.

In some more enclosed indoor environments, such as houses with dense spacing between buildings, the cell phone signal may be blocked, resulting in no signal.

The degree of network coverage of carriers varies according to different regions, and some areas may have insufficient coverage capacity, resulting in no mobile phone signal.

If your mobile phone has no signal in a specific area, or if a nearby friend's mobile phone with the same carrier** card also has no signal, it may be caused by poor network quality in your location, and it can be restored to normal after changing to another place.

2) Please try resetting the APN

Incorrect APN settings will affect the normal use of the network.

Method 1: aClick Settings;

c.Click on the APN name (APN) to go to the APN page.

d.Turn on the three-dot button or four-dot button in the upper right corner;

e.Click Reset to default.

Method 2: If your phone is EMUI and above, or HarmonyOS and above, you can also follow these steps:

a.Click Settings;

b.Tap Mobile network, then tap Mobile data;

c.Click on the APN name (APN) on the Mobile Data page to go to the APN page.

d.Turn on the three-dot button or four-dot button in the upper right corner;

e.Click Reset to default.

Settings > Wireless & Networks > Mobile Networks > Access Point Name (APN) > turn on the three dot buttons in the upper right corner > reset to default.

3) Please try to reset the network settings.

On the Reset Network Settings page, click Reset Network Settings (for dual-SIM phones, select the ** card you want to restore), and enter the lock screen password according to the on-screen prompts.

Click Reset Network Settings, and a message will be displayed at the bottom of the screen that the network settings have been restored.

3.Please troubleshoot the SIM card.

It is recommended that you install the SIM card of the same operator into your mobile phone to check, if the signal display is normal, it may be that there is a problem with your mobile phone card, it is recommended that you go to the operator's business office to replace the new mobile phone card.

4.Please try after updating your phone system to the latest version.

If the above troubleshooting does not resolve your issue, we recommend that you contact Huawei Consumer Service** (950800) for further assistance, or back up your data in advance (WeChat QQ and other apps need to be backed up separately), and bring your purchase voucher to a Huawei customer service center near you.

There is no signal on the mobile phone, one situation is that the signal is really bad, so the mobile phone has no signal, but now this possibility will be relatively small, and there is another. If the mobile phone card is not installed, if the mobile phone card is not installed, it will also cause no signal, and there is a problem with the mobile phone and you need to go to the repair point for repair.

If there is no signal in the mobile phone, it must be that the signal card in your mobile phone is broken, that is, if the ** card is broken, you need to change the card.

If your phone has no signal, it's likely that you have accidentally turned on the airplane mode on your phone. Turn off the airplane mode to regain the signal. 2. When the SIM card is not inserted properly, there will also be no service problem on the mobile phone.

Check the SIM card and reorganize it.

There may be two reasons why the mobile phone has no signal, one is that the card slot of the mobile phone is loose, and the card slot cannot read the SIM card correctly, so the mobile phone has no signal. In addition, after the mobile phone was dropped, the antenna was broken. At this time, the signal of the mobile phone is extremely poor, or even no signal.

The fault of the mobile phone no signal is:

1. Network problems or network inability to cover. When the network coverage is not good, it is generally located in mountainous areas, basements, elevators and shields or signal interference covers, there will be no signal or the appearance of the material-based car is very weak.

2. The network may also cause signal instability in the process of debugging, optimization and maintenance, and the general network will return to normal, and the mobile phone signal will return to normal.

3. Problems with the mobile phone itself. There may be a problem with the receiver of the mobile phone, you need to go to the repair point to see, of course, the factor of SIM card damage cannot be ruled out.

Mobile phone is a portable terminal that can be used in a wide range, the full name is mobile**or wireless**, originally just a communication tool, in the early days in China had the common name of "big brother" Fenghan. The mobile phone was first developed from the battlefield mobile phone manufactured by Bell Labs in 1940, and then the world's first commercial mobile phone was invented by Martin Cooper, an American Motorola engineer, in 1973. In addition to the typical features, modern mobile phones include a camera, GPS, and Internet connection, all of which are collectively referred to as smartphones.

2. Please check whether the fuselage has relevant restrictions on the call function, such as setting the black and white list, it is recommended to cancel all of them before trying to observe;

3. It is recommended that you replace other mobile phones or compare the use of other users of the same operator in the vicinity, it is not excluded that it is caused by the poor network environment, if it appears in individual areas, it is recommended to change the network environment;

4. If you have the conditions to replace other SIM cards, it is recommended that you change the SIM card for comparison and use, if individual SIM cards cannot call in and out normally, it is not ruled out that it is a card failure or compatibility problem, it is recommended to contact the operator for specific detection and treatment;

5. If the above operations cannot be improved, it is recommended to back up the fuselage data to try to restore the settings of the Danque factory;

If the problem cannot be effectively solved after the above operation, for your normal use in the future, it is recommended that you take the time to go to a nearby Lenovo authorized repair station for specific testing and treatment.

Summary. 2.Sometimes the signal reception of the old version of the system will be poor, and you need to upgrade the system version to the latest version to solve the problem.

3.If the signal is still unstable, you can restore the factory settings of your phone.

The solution to the phone no signal.

2.Sometimes the signal reception of the old version of the system will be poor, and the system version needs to be upgraded to the latest to solve the problem. 3.

If the signal is still unstable, you can restore the factory settings of your phone. 4.Go to "More Settings" in the settings, find "Backup & Reset", and click "Erase All Data" below to factory reset.

There is also a possibility that the signal is weak in your area.

My signal here has always been very good, it was turned off last night, and it won't work when it is turned on this morning.

It may also be that the mobile phone card is shaking, you can take out the mobile phone card and put it back in, or maybe you have turned on the screen slag high selling instrument near you for some reason, and the test will turn on the shielding signal.

Other people's phones are normal, but I didn't find my device in the settings?

You can also tap (My Phone).

Click on my phone in **, can you elaborate on it.

In Settings, tap My Phone and reset your device.

I didn't find anything you said.

But you must remember to save your photo album and file information in another phone before replying, and you can send it to another phone.

Don't dare to mess around.

Then you'd better go to the mobile phone store to check, because there are too many reasons for a bad signal, and there is no way to solve this problem for you based on what you said.

Change a mobile phone, play ** in the same place, if the same can't be called, it may be a problem with the card or your local network is not very good: if the card is a problem, go to the mold to disturb the company to replace the card and try again; If it's a network issue, you can walk around and try something else (towers are so widespread these days that this phenomenon only exists in enclosed spaces like basements).

Then there is the problem of the mobile phone, it may be that the card slot is loose and cannot be dialed**, or there may be a problem with the communication module, this depends on the fact that after you finish playing**, quickly look at the signal of the mobile phone, whether it is still displayed full, because I have used a mobile phone before, it is clear that there is a signal, but a dozen **signal will instantly become a space.

To sum up, you can:

Restart your phone.

Change the card to a different phone.

Walk out into the open.

Go to the stool to repair the phone or replace the card.