Check the following: 1. Phone must be turned on to make and receive calls 2. Is this a new phone or a new account? If the phone was recently activated, there may be programming/system issues. If this is the case, contact your service provider 3. Incoming call restrictions may be in place. To check: CALLS > MANAGE CALLS > ACCEPT CALLS > ACCEPT OPTIONS > FROM ALL (should be selected) 4. Evaluate signal strength - If the problem is sporadic and only occurs in areas with poor signal strength, this may indicate a network or coverage issue 。

我有索尼爱立信 T29的问题要问