Call Prefix *67 *82 *70 #31#
MartyGiLab.com Communication In-app purchases Contains ads
Add prefixes like *67, *82, *70 or #31# instantly. Manage caller ID with widgets
- Downloads
- 1.6K+
- on Google Play
- Price
- Free
- In-app purchases
- Updated
- Sep 22
- 2026 Β· v5.6
Screenshots
About Call Prefix *67 *82 *70 #31#
π± Call Prefix β *67, 82, 70, #31#
Need to add a prefix, suffix, or special code before calling?
With Call Prefix, you donβt need to edit your contacts anymore. The app automatically inserts codes like *67, *82, *70, 10-10-XXX, #31#, and more β instantly applied to your outgoing calls.
β¨ Key Features
β Automatic prefixes and suffixes without touching your contacts
π² Smart widgets: manage prefixes, suffixes, and caller ID directly from your home screen
π΅οΈ Anonymous calls: quickly enable/disable *67 or #31# to hide your number
βοΈ Per-call options:
*67 β Hide Caller ID
*82 β Show Caller ID (unblock)
*70 β Disable Call Waiting
10-10-XXX β Carrier dial-around codes
βΈοΈ Skip operator voice messages (where supported) after a few seconds
π International control: remove or replace β+β and β00β for easier international dialing
π Emergency numbers automatically excluded for safety
π Privacy & Security
β No access to your contacts
β No personal data collected
β All numbers are processed locally on your device
π Usage Modes
π Free trial: 24 hours of full access after first install (no charge)
π¬ Rewarded ads: watch a short video to extend usage by 1 day (max 5/day, every 30 min)
π³ Premium: one-time payment ($4.99) for lifetime unlimited use (no subscription, no auto-renewal)
βοΈ Requirements
π± Android 10 or higher (API 29+)
βοΈ Must be set as Call Redirection Manager
π Recommended: exclude from battery optimization
π Compatibility
β Optimized for: Samsung, Google Pixel, Motorola, OnePlus, Xiaomi/Redmi, Huawei/Honor, Vivo
β Not compatible: Oppo and Realme (system-level block)
β οΈ Known issue: some Samsung/Xiaomi devices on Android 15 handle pauses (commas) differently, which may affect skipping operator messages
π Common Use Cases
Hide your number with *67 or #31#
Show your number again with *82
Disable call waiting with *70 during important calls
Use 10-10-XXX codes for alternative carriers
Manage everything directly from widgets
β Call Prefix is the easiest, fastest, and safest way to manage prefixes, hide or show caller ID, and handle special dialing codes β without touching your contacts.
β οΈ This app is independent and not affiliated with any carrier. Codes and services may vary by country, region, and mobile operator.
Need to add a prefix, suffix, or special code before calling?
With Call Prefix, you donβt need to edit your contacts anymore. The app automatically inserts codes like *67, *82, *70, 10-10-XXX, #31#, and more β instantly applied to your outgoing calls.
β¨ Key Features
β Automatic prefixes and suffixes without touching your contacts
π² Smart widgets: manage prefixes, suffixes, and caller ID directly from your home screen
π΅οΈ Anonymous calls: quickly enable/disable *67 or #31# to hide your number
βοΈ Per-call options:
*67 β Hide Caller ID
*82 β Show Caller ID (unblock)
*70 β Disable Call Waiting
10-10-XXX β Carrier dial-around codes
βΈοΈ Skip operator voice messages (where supported) after a few seconds
π International control: remove or replace β+β and β00β for easier international dialing
π Emergency numbers automatically excluded for safety
π Privacy & Security
β No access to your contacts
β No personal data collected
β All numbers are processed locally on your device
π Usage Modes
π Free trial: 24 hours of full access after first install (no charge)
π¬ Rewarded ads: watch a short video to extend usage by 1 day (max 5/day, every 30 min)
π³ Premium: one-time payment ($4.99) for lifetime unlimited use (no subscription, no auto-renewal)
βοΈ Requirements
π± Android 10 or higher (API 29+)
βοΈ Must be set as Call Redirection Manager
π Recommended: exclude from battery optimization
π Compatibility
β Optimized for: Samsung, Google Pixel, Motorola, OnePlus, Xiaomi/Redmi, Huawei/Honor, Vivo
β Not compatible: Oppo and Realme (system-level block)
β οΈ Known issue: some Samsung/Xiaomi devices on Android 15 handle pauses (commas) differently, which may affect skipping operator messages
π Common Use Cases
Hide your number with *67 or #31#
Show your number again with *82
Disable call waiting with *70 during important calls
Use 10-10-XXX codes for alternative carriers
Manage everything directly from widgets
β Call Prefix is the easiest, fastest, and safest way to manage prefixes, hide or show caller ID, and handle special dialing codes β without touching your contacts.
β οΈ This app is independent and not affiliated with any carrier. Codes and services may vary by country, region, and mobile operator.
What’s new
Version 5.6 Β· Updated September 22, 2026
π₯ NEW: SIM filter β on dual SIM phones the prefix applies only to the SIM you choose β’ Rename SIMs in the list (e.g. "Work") with a long press β’ Built-in guide: setting the SIM per contact and what happens hands-free β’ Fix: "Hide caller ID" now works on numbers already starting with the prefix β’ The prefix no longer shows as active if the app isn't the default call handler
Alternatives to Call Prefix *67 *82 *70 #31#
Looking for apps like Call Prefix *67 *82 *70 #31#? Here are 6 similar Android apps on Google Play. All of them are free to download.
| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| Call Prefix *67 *82 *70 #31# | β | Free | 1,000+ | Sep 22, 2026 | |
| VPN-SC | β | Free | 1,000+ | β | Compare |
| CareBank | β | Free | 1+ | β | Compare |
| My ClinicOS | β | Free | 50+ | Oct 23, 2025 | Compare |
| Birbli | β | Free | 10+ | Sep 9, 2026 | Compare |
| Feel Flex | β | Free | 1+ | Sep 2, 2025 | Compare |
| V20 Village | β | Free | 10+ | Aug 28, 2025 | Compare |