Why is my card activated and still no signal and no service?

Mobile phone communication is to send and receive signals through the network base station, and then communicate with the called party, such as the mobile phone shows no service may be related to the following conditions:

1. Mobile phone SIM card.

Poor contact with the shrapnel of the mobile phone card slot, resulting in the SIM card circuit can not work, and the mobile phone and the network base station can not communicate, at this time, you can remove the SIM card and wipe the SIM card gold finger with a cleaning cotton cloth.

, reinstall it.

2. The application software for the installation of the mobile phone is not compatible with the system, resulting in the system software turning off the modem in the mobile phone signal processing circuit.

At this time, you can turn off the phone and restart it, the modem in the mobile phone signal circuit will restart, and when 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 no service as the reason for the SIM card.

4. If the SIM card of the mobile phone is accidental, and there is no signal in the network signal coverage area, it fails to reconnect to search the network and merge the book, at this time, 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.

6. **The card has been used for too long, and with a valid certificate, you can go to the local business hall to reapply for a card.

1. Activation without service reason:

1. The signal is unstable.

2. The mobile phone card is damaged.

3. The mobile phone is in arrears.

4. Turn on airplane mode on your phone.

Second, the solution.

1. Insert the mobile phone card into another mobile phone to use the mobile phone normally, if it also shows that no service is the reason for the SIM card, it is recommended to go to the operator to re-replace the card.

2. You can go to a place with a good signal and restart the machine;

3. Please confirm whether your phone is set to airplane mode and whether your phone is in arrears.

1.First of all, check whether your SIM card has been activated, if not, it is recommended to activate the SIM card first.

2.It is not excluded that the mobile phone has no signal because the signal will be affected by various factors such as terrain, landform, and high-rise buildings during the propagation process, and if your mobile phone is located in a relatively closed place, the signal will be affected. Here's how to deal with it:

1) Turn the phone back on and off and try again;

2) Change the SIM card to a family member's or friend's phone and try again;

3) See if there is a signal from other users around;

If there is no signal, you can contact human customer service for feedback.

Because this problem is often encountered, let's come to 818 1The problem of no service first looks at whether your mobile phone has a locked version of the mobile phone, which is usually called a card machine, if it is a card machine, first look at whether it is a card problem, or the card is not adjusted. (This specifically refers to the foreign version of the iPhone) 2

Eliminate the card problem,Let's see if it's a system conflict.,It's very simple.,Turn on and off the machine or turn the airplane mode on and off.。 3.If these two methods still don't work.

Open Settings General Reset Network Settings 4Restore the network settings is not good, and then see if it is a SIM card problem, change to another SIM to see if there is a signal, if there is a signal is a card problem, go to the business hall to reissue the card. 5.

After ruling out the SIM card problem, it is determined that it is not a card problem, and the above operations have been performed, if there is still no service. Then take the iPhone as an example, open the settings general about the machine to see if there is a number of modems, or * press to see if there is an IMEI. If the numbers don't appear, it's basically a hardware problem.

At present, there are models that are more likely to appear without service, such as the iPhone 7. iPhone7Because of the particularity of its structure, in the case of often accidentally dropping the phone, it is easy to cause baseband problems, in response to this situation, Apple has a corresponding free maintenance policy, first check whether it meets the requirements of free maintenance, if not, this problem occurs first and the phone is turned off to avoid causing the baseband CPU to be completely scrapped and cannot be repaired. Shut down, shut down, shut down, say important things three times, and find a mobile phone shop to repair after shutting down.

Flashing the machine will basically cause it to fail to activate, and sometimes it may also report an error. Applicable to:'No service'The iPhone 7 Repair Plan in question is valid for 4 years from the date of the device's first retail sale! In addition, there is a more direct solution to hardware problems, and that is motherboard repair!

30---21：30。The same applies to the 4G version of the iPad.

Although the no-service problem is not a big problem, it is quite annoying to encounter, and after reading the above methods, you should not be so worried.

Summary. Hello, for you to make the following: card activated or no signal no service there are several solutions to these situations.

1. Shut down and restart the network search attempt. 2. If it is a dual-SIM phone, please check whether the SIM card is activated: Settings - SIM Card Manager - Sim1 Sim2 - Click the SIM card icon to slide to open (the operation mode of different models of mobile phones may be slightly different).

3. If there is still no signal, it is recommended to turn off the phone and take out the SIM card, use an eraser to wipe the SIM card chip, and then reinstall it. 4. If it is invalid, please try to change to another location to rule out whether it is caused by poor signal coverage at the location.

Why is my card activated and still no signal and no service?

The new card is activated, why can't it be used?

2. If it is a dual-SIM phone, please check whether the SIM card is activated: Settings - SIM Card Manager - Sim1 Sim2 - Click the SIM card icon to slide to open (the operation mode of different models of mobile phones may be slightly different). 3. If you still don't have the state office number, it is recommended to shut down and take out the SIM card, use an eraser to wipe the SIM card chip, and then reinstall it.

4. If it is invalid, please try to change to another location to rule out whether it is caused by poor signal coverage at the location.

5. Change the network alarm mode to 3G or 2G to try (do not select the automatic connection mode). Note: Some machines do not support changing the network mode of the leuk.

6. Try to change other SIM cards. 7. Update the system version of the phone: Settings - About the phone (about the device) - Manual update Automatic update (software update System update - update).

1. Take the SIM card to another mobile phone and try it, if it is the same, go to the operator's business office to change the SIM card.

2. If it can be used normally on other mobile phones, the SIM card slot of the mobile phone or the mobile phone is broken and needs to be repaired.

1. Check whether the SIM card is inserted in the correct position, if so, you can reinsert the SIM card again.

2. Check whether the golden card area of the SIM card is obviously damaged or scratched. If so, it can only be replaced.

3. If the SIM card is used for a long time or the SIM card is often unplugged, it will cause poor contact between the card and the mobile phone, at this time, you need to check the electrodes of the SIM and **, if it is not clean, you can use an anti-static cloth to clean it.

Reasons and solutions for the mobile phone showing no service:

The phone card is damaged. After powering off, remove the SIM card, use the eraser to wipe the SIM card, and reinsert the SIM card to power on.

The system is abnormal. Insert the mobile phone card into another mobile phone, if it also shows that no service is the reason for the SIM card, it is recommended to go to the operator to replace the card.

The card slot is faulty. Insert another new SIM card into this mobile phone, if the display is abnormal, it is a machine failure, and it is recommended that the customer service center detect and deal with it.

2. **The traffic in the province is enabled by default with the function of "Daily Rental of Traffic in the Province", 1 yuan package of 500MB of traffic in the province (valid on the same day), which will be automatically superimposed when used up, and billed according to the amount;

3. **The function of "Daily Rental Treasure for Out-of-Province Traffic" is enabled by default for out-of-province traffic (effective from March 1, 2017), 2 yuan 500MB out-of-province traffic (valid on the same day), automatically superimposed when used up, and billed on a pay-as-you-go basis;

4. Domestic voice visual ** dial minutes; Domestic answering is free of charge;

5. Send domestic point-to-point SMS and MMS messages.

This kind of problem is also more obvious, that is, the problem of your mobile phone card, take out the mobile phone card and gently wipe it with a paper towel or alcohol cotton, reinstall it, and it should be solved after opening.

Or put the phone card on another phone to see if it can be normal.

Whether you can use other mobile phone cards in your mobile phone, if you can use it, it is a problem with your original mobile phone card, and if you can't use it, it is a problem with the mobile phone card slot.

The card contact is not good, and it should not be put well.