I ported my main number to Voipfone about two years ago, at the time, porting to Sipgate was not possible.
On the whole it works, though sometimes calls to mobile phones don't work very well.
I like the Voicemail facilities from Voipfone and Sipgate. I get warning text messages, and emails with the phone message as an attachment.
With my previous BT landline, I had DECT phones that could send and receive text messages. Now, when people send text messages to my Voipfone and Sipgate Voip phone numbers I get a voice call from some BT text to voice service.
Edited by Michael_Chare (Sun 12-Nov-17 11:37:36)