Bria setup on iPhone. Android may be a little different but same concept.
Download Bria
2. Allow access to Microphone and Notifications is a must. Contacts, camera and Siri are optional
3. To Set Up a SIP Account:
a. Go to Settings > Accounts and tap +
b. Select your VoIP provider by tapping “VoIP (SIP) – Calling”
c. Complete Account Name, Username, Password, Domain and VM Number with the following information:
Account Name: Whatever you want to call it i.e. Company name
Username: Your username (From Vinix portal)
Password: Your password (From Vinix portal)
Domain: Your Domain/Realm (From Vinix portal)
VM Number: Your extension
Enable
5. Disable “Improve Reachability” iPhone ONLY
7. Icon should turn green when registered.