Jokko9 vs UpdateContacts

The Gambia is changing from 7-digit to 9-digit phone numbers. Every number saved in your phone needs the new operator prefix added — and if you have hundreds of contacts, doing that by hand is slow and easy to get wrong. Jokko9 does it for you. It scans your saved contacts, works out which operator each number belongs to, and shows you exactly what it will change before anything happens. You approve, and it updates them all at once. HOW IT WORKS • Africell numbers get the 87 prefix • QCell numbers get the 83 prefix • Comium numbers get the 86 prefix • Gamcel numbers stay 7 digits, as PURA specified • Anything unrecognised is flagged for you to check yourself COMPLETELY PRIVATE Jokko9 works entirely offline. There is no account, no sign-up, and no internet connection — your contacts never leave your phone. Nothing is uploaded, and nothing is tracked. YOU STAY IN CONTROL Review every change before it is applied, and keep a record of the original numbers. Built for Gambians, by Computer Science students at the University of The Gambia, following the official PURA migration rules. Published with the support of TeranGO.

From 4 September 2026, every mobile number in The Gambia changes. A two-digit operator prefix goes in front of the seven digits you already know, and the old numbers stop connecting. If you have a few hundred contacts, fixing them by hand is a long evening. If you have a few thousand, it is not realistic at all. UpdateContacts does it in one pass. SCAN UpdateContacts reads the contacts on your phone and works out which numbers use the old format, and which operator each one belongs to. Numbers that are not changing — Gamtel landlines, short codes, USSD strings and international numbers — are left alone. PREVIEW You see every single edit before anything happens. Old number, new number, contact by contact. Nothing is saved until you confirm. UPDATE Every number is changed in one go. An encrypted backup is written first, and one tap puts everything back if you change your mind. FOR INDIVIDUALS AND INSTITUTIONS The number update is available for both individuals and institutions, public and private. A business, ministry or school with thousands of numbers in a shared address book runs exactly the same flow as one person with their own phone. The bulk update, the encrypted backup and the undo do not change with volume. FREE TO SCAN AND PREVIEW Scanning, previewing, the single-number converter and the migration information are free, and always will be. A one-time unlock adds bulk updating, encrypted backups, restore and undo. No subscription and no repeat charges. YOUR CONTACTS STAY ON YOUR PHONE The scan runs entirely on your device. Your address book is never uploaded — there is no server involved in scanning at all. UpdateContacts never asks for your phone number.