Stock Android dialer does not support dialing SIP numbers directly; the only way to do it is to add a contact or run am start -a android.intent.action.CALL sip:... in terminal. SIP Caller allows dialing SIP numbers directly.
Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.Download F-Droid
This version requires Android ? or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
directly call phone numbersAllows the app to call phone numbers without your intervention. This may result in unexpected charges or calls. Note that this doesn't allow the app to call emergency numbers. Malicious apps may cost you money by making calls without your confirmation.