Samsung note2 can't make phone calls, can't send text messages, and the signal is still full when the mobile phone card is unplugged. The place where I went to repair my mobile phone said it wasn't a

Samsung note2 can't make phone calls, can't send text messages, and the signal is still full when the mobile phone card is unplugged. The place where I went to repair my mobile phone said it wasn't a card insertion problem. According to your description, I suggest you try the following methods:

1. I suggest you go to Settings-Applications-All-SMS-Clear Data.

2. Restart the phone to see if there is a signal problem.

3. Check whether the number of the information center is correct: Information-Menu button in the lower left corner-Settings-Information Center. The number of centers in different operators and regions is different. Please contact the network operator for confirmation. The number of the information center must be preceded by "+".

4. Try to replace another SIM card.

5. It is recommended that you try to upgrade the firmware. (Settings-About Equipment-System Update)

If you still can't send and receive SMS through the above methods, please bring the purchase invoice, maintenance card and machine to Samsung Service Center, and the engineer will check and handle the machine. Please click the following link to find out the specific location of Samsung Service Center:.