Hi. I have a UMI plus Chinese smartphone, which for the price is pretty good. But for some reason I can't add a SIP call account as while call accounts is a setting in the phkne app (stock or otherwise I even side loaded version 3.01.08) and while thee work and allow the other features (caller id, nearby locations etc) there is still it ability to add a SIP account. Under calling account there is simply no option to add anything, I.e. not ... Etc.

I have read that WiFi calling (which seems to be the common name its referred to) is a network enabled feature based on your device. Is this true.

On my OnePlus one the SIP feature is present.

Ant ideas