Sipmanager Cannot Create Sipservice. Cannot Bind Context.sip_service In Nougat

I have an application that uses SipManager to open a SIP profile. I have no difficulties opening the SIP profile on my older(KitKat) device, but my new(Nougat) device throws the a

Solution 1:

Is Wifi Calling enabled (or can be enabled) on your device?

I have the same issue with an Asus (model X00PD), android is 8.0.

SipManager.IsApiSupported() and SipManager.IsVoipSupported() both return true, however, if I view services under Developer options, Wifi Calling is not running, and the Asus ui disables the option to enable it.

To contrast the Wifi-Calling service is running on my S8 (also 8.0), by default. Same with an older S6(7.0) and a Nokia 6.1(8.1).