When the VoIP service has been activated, the service can be deactivated by setting Menu > Settings > Call > Call type setting to Voice call only. The device will deregister from SIP server and the active Internet connection (WiFi or 3G) is disconnected.
- How can I recover/reset/restore my phone software?
- My Asha (Series 40) phone does not work or respond as expected
- I have forgotten the security code for my Nokia (Series 40) phone
- My phone does not charge
- How do I resolve the “conflicting applications” error when starting one of my preinstalled applications?