SIP settings differ from Android version to version - here you'll find the HowTo **for Android 8.1 (API Level 27)**

If your manufacturer has not removed it from your ROM, Android natively supports SIP without any third party apps.

To enable it, open the default Phone app (com.android.dialer), go to ''Settings'' > ''Calling accounts'' > ''SIP Accounts''.
Create a new account and enter your credentials (see [[SIP configuration hints]]).

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Go back to ''Calling Accounts'' and configure these options:

^ Option                  ^ Selection              ^ Note                                                                                                    ^
| Make calls with         | Ask first              |                                                                                                         |
| All calling accounts    | (enable your account)  |                                                                                                         |
| Use SIP calling         | For all calls          | You can still make GSM calls, this simply allows dialing numbers without entering the full SIP address  |
| Receive incoming calls  | yes                    |                                                                                                         |