What do you mean, stop service?

Stop service because the signal can't reach.

The mobile phone is not in the service area, which means that the other party's mobile phone can't receive the signal and can't make a phone call or send and receive text messages. This may be caused by the following reasons:

1. Geographical location restriction: If the area where the other party's mobile phone is located is a new urban area or a remote suburb, the mobile phone may not be in the service area because the wireless mobile phone network has not covered the area.

2. Signal shielding: In some special places in the city, such as elevators, underground places or buildings, shielding or signal coverage failure may occur, resulting in the weakening or disappearance of mobile phone signals, thus making mobile phones out of service areas.

3. Network failure or maintenance: Temporary network failure or maintenance of base stations by telecom operators may cause the mobile phone to be unable to connect to the network and communicate. At the same time, it will also cause the caller to indicate that the mobile phone is not in the service area.

4. Mobile phone problem: There may be problems with the other party's mobile phone, such as dirty SIM card contacts, which makes the mobile phone unable to receive signals normally.