Registration failed on the old computer.

1. Maybe the card slot is broken, the phone model is wrong or the phone number is wrong.

2. The failure to cancel the old telephone may be that the card slot is broken and the chip cannot recognize it. The solution is to get it repaired, and then the identification method is to put a mobile phone card in it to see if there is a signal. If there is still no signal, it is probably a card slot problem. The failure of mobile phone card registration is probably due to poor contact between mobile phone and mobile phone card. It may be because the card slot is loose after the mobile phone is hit strongly or falls to the ground, which will make the mobile phone card unable to connect with the mobile phone normally and lead to failure. Or because the mobile phone card is used for too long, the gold chip is excessively worn, and the stored user information cannot be recognized by the mobile phone. In this case, the mobile phone card needs to be replaced.

3. There may be problems with the standards of mobile phones. If your mobile phone is a telecom version of the mobile phone for the elderly, and a mobile or Unicom card is inserted, it will also show the registration failure or the reason for the mobile phone number. It may be that the mobile phone has not been used for a long time and has been cancelled. In addition to mobile phone problems, mobile phone cards may also be invalid. Nowadays, many people like to charge while using their mobile phones. In fact, this is not desirable, because charging during the use of the mobile phone will cause a lot of residual heat in the mobile phone, which will increase the temperature of the mobile phone and burn the mobile phone card in serious cases. In addition, the frequent switching of mobile phone cards in different mobile phones will also cause the damage of mobile phone cards, which may lead to the failure of mobile phone card registration.

What is an aging machine?

Mobile phones for the elderly refer to mobile phone products suitable for middle-aged and elderly people. This product is generally single in function. Mobile phones for the elderly are widely used by the elderly, which has had an important impact on the popularity of telecommunications terminals in the country, allowing odd-numbered elderly people to fully experience modern life. It has telephone and SMS functions to meet daily use. At the same time, the keys and display fonts of elderly mobile phones are generally large, easy to operate, and usually have humanized functions such as one-button dialing, which has won the favor of middle-aged and elderly users.