Call Prefix is an Android app designed to simplify outgoing calls that require prefixes or caller ID toggling.
Many carriers worldwide require codes like *67, #31#, or 141 to hide the caller ID, or special prefixes like 4146 or 77 in Italy. Instead of typing these manually each time, the app automatically prepends the correct code while letting you keep using your default dialer.
Key features:
Add prefixes and suffixes dynamically for each call.
One-tap toggle for hiding or showing caller ID (e.g. *67, #31#, 141, 4146, 77).
Dual SIM support.
Widgets for quick access.
Car Bluetooth compatible.
Local-first design: no contact list modification, no account required.
Optional free mode with rewarded ads; one-time purchase to unlock unlimited use without ads.
Supported Languages
English, Italian, Spanish, French, German, Portuguese
Pricing
Freemium (free with ads; optional one-time in-app purchase)