I am i5, ios7. 1.2. My cell phone has a signal and it's full. I can't make phone calls or send text messages. I have a 3G network, but I can't get online.

1) Please call the operator's customer service number (e.g. Telecom 10000). If you can get through, there is usually no money. . . You can ask them if they are in arrears. You can also check in the online business hall. . .

2) If there is no arrears, you can test whether the SIM card is broken or the mobile phone is broken (or the settings are wrong) by alternately replacing it (that is, putting your own SIM card in someone else's mobile phone and putting someone else's SIM card in your own mobile phone).

3) If the card is broken, go to the business hall to replace it.

4) If the mobile phone is broken (or set incorrectly), you can first know the model of your mobile phone, that is, whether it is a national bank or a parallel import. If parallel imports update the latest IOS version, unexpected problems may occur, such as calling the international area code +86 first to see if you are the American version or the Japanese version. . .

5) Finally, it was confirmed that the mobile phone was broken and had to be repaired. . . See if it is under warranty. . .