I am having a similar problem with the phone dropping incoming calls on the same SIP device. Does anyone have a solution???
Hello, My problem is specific to a scenario when I am in a SIP call and one incoming call arrives from GSM network. If I try to perform any operation on My Nokia E51 at this moment, E51 hangs and restarts.
I avoid doing anything until incoming GSM call is missed and I continue talking in SIP call.