Today, anything related to Dangle is not connected to the Internet. What happened? It's not my fault that my friend's cell phone can't be connected without an announcement.

1. The signal there is not very good. Try a ventilated or high place.

2. Does your mobile phone work normally? Texting or something, maybe an internet company. In this case, you can have a look at the telephone manual service.

3. Is your calling card loose? Turn it off, then plug it in.

4. There may be insufficient memory.

5. If the above probability is not great, it is estimated that there is something wrong with your mobile phone.