Samsung phone has no network connection No signal found for mobile mobile network

If there is no signal on your phone or an emergency call prompt is displayed on the screen, it is recommended:

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.

Hello. First of all, there are many reasons why the mobile phone card has no signal

1. Mobile phone system problems;

2. Mobile phone card problem;

3. Mobile base station problems.

In response to the above three questions, it is recommended that you first check whether your friends around you have a signal on their mobile phones

1. The mobile phone has no signal and can have the problem of local network base station;

2. Secondly, use your mobile phone to insert its friend's mobile card, try to insert its card, and it is also possible to contact the mobile phone for system problems.

3. Plugging in its card has a signal, only plugging in your own card, and it is recommended that you take your mobile phone card to the local mobile business hall for testing.

The reason why Samsung mobile phones have no network and no signal may be a problem with the SIM card, and there is also a hardware problem;

Look at the standby screen of the phone, the name of the carrier (public land mobile network) is displayed normally and must be the same as that of the SIM card provider and roaming partner, and the signal bar is displayed normally.

3.If all of the above displays are fine but there are still problems, please try to manually select the network Select Menu > Settings >Network Settings" Select Network > Select Manual and then wait for the network list to appear Select the desired network.

4.If the problem persists after performing the above operations, please turn it off and start it again.

If your Samsung phone can't access the Internet normally, please check the following conditions:

1. If you don't restart your phone after upgrading to 4G**, you won't be able to use the Internet function normally;

2. Confirm whether there is a network, it is recommended that you can use it in a place with a strong signal;

3. Check whether there is still a phone bill in the account, if the balance is insufficient, you need to recharge before you can use it;

4. After 3-5 minutes of power off, restart the phone and try again;

5. Check whether the USIM card is inserted, if it has been inserted but still cannot be used, it is recommended that you go to the business hall to check whether the USIM card is faulty, or replace the card for testing;

6. If the traffic usage reaches the maximum value in the current month, the network will be automatically closed, it is recommended that you pay attention to our SMS reminder or inquire about the **product description.

Samsung mobile phone is like that, I bought one for my wife, and there is often no information, and she often says that I give her badly! It's so depressing!