No cell phone signal shows what s going on with restricted services

First, the problem of mobile phones.

You can check it, try to change a card that can play **, if the card is not working, it means that it is a mobile phone problem. Phone issues include that the phone may have set restrictions, factory reset to give it a try. There are also some places for dual-band networks, that is, 900 megabytes and 1800 networks, such as Guangzhou, Shenzhen and other places, but the vast majority of areas are not dual-band networks, under the single-band network, if you switch your mobile phone to another frequency, then you can't use **, the most common is nokia, which has the switch between line 1 and line 2.

If the fault cannot be ruled out, go to the corresponding repair shop for testing.

2. Network issues.

In rare cases, it will be a network problem, such as a switch failure, and the mobile phone base station will be normal and cannot be used**, but the mobile phone signal is still full, in this case, the people around you will not be able to use**, the same situation will occur.

Network problems, it will be fine later.

There is no signal, or you have permission to set it.

1. The SIM card of the mobile phone is in poor contact with the shrapnel of the mobile phone card slot, resulting in the failure of the SIM card circuit, and the inability of the mobile phone to communicate with the network base station.

2. The mobile phone is incompatible with the system due to the application software for installation, resulting in the system software closing the modem in the mobile phone signal processing circuit, at this time, the mobile phone can be turned off and then restarted, the modem in the mobile phone signal circuit will be restarted, and after the signal is normal, delete the suspicious mobile phone application software installed before the problem;

3. The SIM card of the mobile phone is not registered in the network, at this time, you can insert this SIM card into another mobile phone, if it also shows that no service is the reason for the SIM card;

4. If the SIM card of the mobile phone fails to reconnect to search the network after there is no signal in the network signal coverage area, you can manually search for network registration under the menu of Settings - General - Network - Network Operator;

5. If the signal coverage of the mobile phone SIM card network operator is not available, you can change the location to an open area, and then check the mobile phone signal grid display, if the display is normal after changing the location, you can call the network operator service ** for feedback and complaints.

We recommend that you follow the steps below:

1.Turn your phone on and off again.

2.Change a SIM card and insert it into the unit to try.

3.Update the system version of the phone to see if there is any improvement.

4.Back up your phone's data (book, SMS, multiple files, etc.) and restore factory settings.

If the problem persists, it is recommended to send the phone to the nearest Samsung service center for testing and repair.

The card is not put well, or the card is broken, it is recommended to take the card down and reload, if not, that is, the card is broken, go to the business hall to replace the card, bring the owner's ID card, more than 2 years old users are free, star users are free, and ordinary users are charged 50 yuan to replace the card.

The restricted services shown on the phone are:

1. The mobile phone is faulty and there is no signal.

2. The SIM card is out of money or not plugged in.

Solution: 1, It is recommended to disassemble the phone, pull out the SIM card to clean up, and then reinsert it to start up. 2. Re-insert the SIM card, try it in a place with a good signal, and send it for repair and testing if it doesn't work.

If the card is not put away, there is a network lock on the mobile phone, go to the after-sales service to pick it up for you.

Maybe the card is broken, and the replacement card is 10 yuan.

It's stopped, or the regional card, out of the scope of use of the card.

Under normal circumstances, when the mobile phone is restricted, an emergency** such as 110 can be dialed. So in your case, I think you may have pressed the lock code of the mobile phone, or other functions related to the mobile phone are locked, otherwise there will be no such situation, even if it is in arrears or without a mobile phone card, it is also possible to carefully unplug the emergency ** number. It is recommended that you take it to the repair shop and have it checked!