Bring Your Own Device to NovaPhone
if you have an unlocked GSM phone of any type, you can likely convert it to a NovaPhone dual-mode cell phone.
All that is required is that you download and install the NovaPhone app (available here), or scan this QR code:
Or download the app Grandstream Wave from your favorite app store.
Under SIP User ID, enter the account number you have been assigned. Enter the same account number under SIP Authentication ID.
Then enter the Password you have been given.
Then, tap the Check Mark at the top right corner to save your settings.
Return to Settings, and tap Exit to close the app. Reopen the app; in a few seconds the account will register. You can check that you are registered by tapping Settings->Account Settings. If the phone is correctly registered, a green dot will show after the account name. If it has not registered, the dot will be red.