Method for processing incoming call

A method for processing an incoming call using a first communication device, the method comprising:

• detecting a phone number of a second communication device of the incoming call;
• judging whether the incoming call has terminated and not being answered;
• if the incoming call has terminated and not being answered, logging the phone number of the incoming call;
• judging whether the phone number of the incoming call is listed in a phone book of the first communication device;
• if the phone number of the incoming call is not listed in the phone book of the first communication device, computing a ring duration of the incoming call;
• comparing the ring duration of the incoming call with a predetermined time interval;
• and
• if the ring duration of the incoming call is shorter than the predetermined time interval, the first communication device displaying textual information alerting not to return the incoming call.

A method for processing an incoming call using a first communication device, the method comprising:

• detecting a phone number of a second communication device of the incoming call;
• judging whether the incoming call has terminated and not being answered;
• if the incoming call has terminated and not being answered, logging the phone number of the incoming call;
• judging whether the phone number of the incoming call is listed in a phone book of the first communication device;
• if the phone number of the incoming call is not listed in the phone book of the first communication device, computing a ring duration of the incoming call;
• comparing the ring duration of the incoming call with a predetermined time interval;
• and
• if the ring duration of the incoming call is shorter than the predetermined time interval, the first communication device deleting the phone number of the incoming call such that the incoming call cannot be returned.