Call Prefix & Caller ID Codes
MartyGiLab.com
📱 Call Prefix – Hide Your Number, Anonymous Calls, Prefix & Suffix Codes
Want to hide your caller ID, make an anonymous call, or automatically add a prefix, suffix, or special code to outgoing calls — without editing your contacts?
Call Prefix automatically applies codes like #31# (to hide your number), and other prefix/suffix codes to the numbers you dial, so you never have to type them manually. Perfect for work SIMs, secondary numbers, anonymous calls, and carrier service codes.
✨ Key features
➕ Automatically adds prefixes and suffixes to calls
🕵️ Hide your caller ID and make anonymous calls with #31#
📲 Quick home-screen widgets to turn codes on or off
⏸️ Automatically skips carrier voice announcements, where supported
🌍 International number handling with + and 00 replacement or removal
🆘 Emergency numbers are automatically excluded for safety
🔐 Privacy & security
❌ No access to your contacts
❌ No personal data collection
✅ All numbers are processed locally on your device
💎 How it works
🎁 Free trial: 24 hours of full access after first install
🎬 Video reward: +1 day of access for every video watched
💳 Premium: one-time purchase for lifetime unlimited use, no subscription
⚙️ Requirements
📱 Android 10 or higher
⚙️ The app must be set as your call redirection handler
🔋 Battery optimization exclusion recommended
📌 Compatibility
✅ Works on many Samsung, Xiaomi/Redmi, Motorola, OnePlus, Huawei/Honor, and Vivo devices
❌ Not compatible with some Oppo and Realme devices due to system limitations
⚠️ On some Samsung and Xiaomi Android 15 models, comma pauses may not be handled correctly
🔎 Common use cases
• #31# to hide your number and make anonymous calls
• Prefix codes for compatible business profiles
• Suffix codes for dual-number setups
• Quick codes without typing them every time
⭐ Call Prefix is the simple, fast way to hide your number, make anonymous calls, and manage prefixes, suffixes, and service codes without editing your contacts.
⚠️ This app is independent and not affiliated with any phone carrier. Codes and services may vary by carrier, plan, country, and device.
Want to hide your caller ID, make an anonymous call, or automatically add a prefix, suffix, or special code to outgoing calls — without editing your contacts?
Call Prefix automatically applies codes like #31# (to hide your number), and other prefix/suffix codes to the numbers you dial, so you never have to type them manually. Perfect for work SIMs, secondary numbers, anonymous calls, and carrier service codes.
✨ Key features
➕ Automatically adds prefixes and suffixes to calls
🕵️ Hide your caller ID and make anonymous calls with #31#
📲 Quick home-screen widgets to turn codes on or off
⏸️ Automatically skips carrier voice announcements, where supported
🌍 International number handling with + and 00 replacement or removal
🆘 Emergency numbers are automatically excluded for safety
🔐 Privacy & security
❌ No access to your contacts
❌ No personal data collection
✅ All numbers are processed locally on your device
💎 How it works
🎁 Free trial: 24 hours of full access after first install
🎬 Video reward: +1 day of access for every video watched
💳 Premium: one-time purchase for lifetime unlimited use, no subscription
⚙️ Requirements
📱 Android 10 or higher
⚙️ The app must be set as your call redirection handler
🔋 Battery optimization exclusion recommended
📌 Compatibility
✅ Works on many Samsung, Xiaomi/Redmi, Motorola, OnePlus, Huawei/Honor, and Vivo devices
❌ Not compatible with some Oppo and Realme devices due to system limitations
⚠️ On some Samsung and Xiaomi Android 15 models, comma pauses may not be handled correctly
🔎 Common use cases
• #31# to hide your number and make anonymous calls
• Prefix codes for compatible business profiles
• Suffix codes for dual-number setups
• Quick codes without typing them every time
⭐ Call Prefix is the simple, fast way to hide your number, make anonymous calls, and manage prefixes, suffixes, and service codes without editing your contacts.
⚠️ This app is independent and not affiliated with any phone carrier. Codes and services may vary by carrier, plan, country, and device.
Developer email
prefisso@martygilab.com
Developer website
https://www.martygilab.com/prefisso/prefisso-chiamate.htmlReleased
Sep 5, 2025
Current version
5.5
Android version
10
Screenshots
