Added "Transferred Call" label on the history tab
Added total number of contacts to the bottom of the contact list
Fixed attended transfer issue
Fixed custom Call URI, Provisioning URI, and Command URI schemes
Fixed GSM call button issue
Fixed issue where only one attachment could be added
Fixed issue with playing voice messages in the app
Fixed MNC global parameter
Improved history tab when there are no entries
Improved registration flow after app reset
Improved SIP log naming and format