How to Change Your Phone Number in WhatsApp and Telegram Without Losing Account Access
Switching SIMs or moving abroad usually means a new phone number — and that raises a worrying question: what happens to your WhatsApp chats and Telegram groups? Both apps let you change your number inside the app, keeping your chats, groups, contacts, and media intact. But doing it wrong — deleting the account first, or registering fresh — can strand you.
Below are the steps for both apps, plus the common rules for a smooth migration — trigger the change while your old number still works.
How to change your number in WhatsApp
- Get the new number working first. Your new SIM must be active and able to receive SMS — WhatsApp sends a verification code to it.
- Open the change-number screen. In WhatsApp, go to Settings > Account > Change Number.
- Enter both numbers. Tap Next, then enter your old number first and your new number with the country code, then tap Done/Next.
- Verify the new number. Enter the SMS verification code sent to your new number. Your chats, groups, profile, and media migrate automatically to the new number.
- Do not delete or reinstall first. Run the change on the same phone with your old account signed in. Deleting the account or reinstalling the app before changing the number breaks the link between your history and your identity.
How to change your number in Telegram
- Open Settings. In Telegram, open Settings (Android: menu > Settings).
- Find your number. Tap your phone number (or Edit Profile > phone number).
- Change the number. Choose Change Number, enter your new number, and enter the SMS code Telegram sends to it.
- Everything moves automatically. Your chats, groups, channels, contacts, and cloud media move to the new number — Telegram’s cloud design makes this seamless.
- Harden the account first. Before changing numbers, link a login email and enable two-step verification under Privacy and Security. That way, even if SMS delivery hiccups, you can still prove you own the account.
Common rules for both apps
- Change while the old number still works. Do the switch before your old SIM is deactivated — once the old number is dead, verification gets much harder.
- Update group presence only if you want to. WhatsApp can notify your contacts about the number change — decide whether you want that broadcast.
- Lock down visibility in Telegram. After the change, review Settings > Privacy and Security > Phone Number to control who can see your new number — set it to Nobody or My Contacts if you prefer privacy.
- Keep your SIM verified. Number-based verification depends on a working SIM; our guide on verifying a SIM card explains how to avoid service interruptions during a switch.
If it still doesn’t work
- No verification code arrives? Wait a few minutes, request a resend, and make sure the new SIM can receive SMS.
- Entered the wrong old number? Re-register the correct one (if the SIM still works) and repeat the change-number flow carefully.
- Still stuck? Check the official documentation: the WhatsApp Help Center covers the change-number flow, and the Telegram FAQ explains number changes and two-step verification. Outlets like iMore have also walked through both processes.
Frequently asked questions
Will my chats and groups survive the number change?
Yes. In WhatsApp, chats, groups, profile info, and media migrate automatically with Change Number; in Telegram, chats, groups, channels, contacts, and cloud media move too. Neither app deletes anything during the switch.
Do I need to tell my contacts about the new number?
Not necessarily. WhatsApp can notify contacts about the change; Telegram updates your number for mutual contacts automatically. Keep visibility restricted and skip the broadcast, and most people will never notice. See also our guide on setting up message sync between iPhone and Mac for keeping conversations in sync across Apple devices, and our guide on managing Safari password suggestions on iPhone for keeping the logins behind these accounts organized.
Wrap up
Changing your phone number does not have to mean starting over. Use the built-in change-number feature in WhatsApp and Telegram while your old number still works, verify the new one by SMS, and everything — chats, groups, media — comes along. Do it before the old SIM dies, and the whole switch takes five minutes.
