Suddenly, the mobile phone doesn't know why, others don't display their names when they call and send text messages, and so does the caller. Who knows why? solve ...

Hello, landlord: have you set up dual storage with your mobile phone and SIM card? Please use a memory. Business cards in the business card folder can't have duplicate numbers with the same phone number and different names, otherwise the system won't recognize them, and it doesn't know whether one person doesn't display the numbers or all of them. If no numbers are displayed, it is suggested to check that the card holder is turned off and restarted to see if it can be solved. I hope I can help you solve the problem. Baidu Hong Kong Enterprise Union will serve you wholeheartedly.