How can we help?

Most problems have a quick fix below. If yours doesn't, write to us and we'll take a look.

Email support

Questions, bugs and ideas. Include your Android version and phone model.

Setup, SIP accounts, choosing a line and call quality.

Installing the APK and making VoiZip your phone app.

The problems people run into most, and what solves them.

Make VoiZip the default phone app: Settings › Apps › Default apps › Phone app › VoiZip.

Check the username, password and server in Settings › SIP accounts, and that you are online.

Allow the Phone permission when asked. Android needs it to list every SIM and eSIM.

Move to Wi-Fi or a stronger mobile data signal. If it keeps happening, share your logs with us.

Logs show us what happened on your phone. They can include phone numbers and SIP addresses, and they only leave your phone when you send them.