Changing your WhatsApp number is easier than most people think
Getting a new phone number does not have to mean starting over on WhatsApp. A lot of people assume that a new SIM wipes their chats, their groups, and every conversation they have been having for years. That fear is why some people keep paying for a number they no longer want. The good news is that WhatsApp has a built in tool called Change Number that moves your account, your chat history, and your group memberships from the old number to the new one, all on the same phone, without you losing a single message.
I have done this twice, once when I switched carriers and once when I moved countries. Both times my archived chats, my media, and my starred messages came across untouched. Below is exactly how the feature works, the steps for Android and iPhone, what it can and cannot do, and the mistakes that trip people up.
Before you start: the checklist that saves you
Do not skip this part. The change process itself takes about two minutes, but if you rush in without preparing, you can lock yourself out for hours.
Have both numbers ready
You need your old number still active on WhatsApp (the account you are using now) and the new number able to receive an SMS or a phone call. The new SIM does not strictly have to be sitting in the phone, but you must be able to read the six digit verification code sent to it. The simplest setup is to put the new SIM in a second phone, or keep the old SIM in the device while a friend reads you the code from the new SIM. If your phone has dual SIM, even better.
Make a fresh backup first
The Change Number feature keeps your chats on the device, so in theory you do not need a backup for this specific process. Make one anyway. Open Settings, then Chats, then Chat Backup, and run a manual backup to Google Drive (Android) or iCloud (iPhone). If anything goes sideways, a backup is your safety net. It costs you two minutes and a bit of cloud storage.
Update WhatsApp
Run the process on the latest version of the app. An outdated build can behave unpredictably during verification.
How to change your WhatsApp number on Android
The path is short and the app walks you through it.
- Open WhatsApp and tap the three dots in the top right corner.
- Tap Settings, then Account, then Change Number.
- Read the notice on the screen and tap Next.
- Enter your old phone number in the top field and your new phone number in the bottom field, both with the correct country code. Tap Next.
- Confirm the new number when asked, then choose who to notify (more on that below).
- WhatsApp sends a verification code to the new number. Enter it, and the migration completes.
Once it finishes, your account is now tied to the new number. Everything, including your profile photo, your About text, your groups, and your entire message history, stays put.
How to change your WhatsApp number on iPhone
The steps mirror Android almost exactly.
- Open WhatsApp and tap Settings at the bottom right.
- Tap Account, then Change Number.
- Tap Next after reading the on screen explanation.
- Enter the old number, then the new number, each with its country code, and tap Next.
- Pick your notification preference and confirm.
- Type in the verification code sent to the new number to finish.
iPhone users who also use iCloud backups should confirm the backup ran before starting, since iOS keeps chats tied to your Apple ID rather than the number.
What about WhatsApp Web and Desktop?
You cannot change your number from WhatsApp Web or the desktop app. Those are companion clients that mirror your phone. The Change Number option lives only inside the mobile app, so do the whole thing on your phone. After the change is done, your linked Web and Desktop sessions stay connected because they follow the account, not the raw number.
Deciding who gets notified
During the process WhatsApp asks whether to tell your contacts about the switch. You get three choices.
All contacts
Everyone in your address book who uses WhatsApp gets a small notification that your number changed. This is loud and usually unnecessary.
Contacts you have chats with
Only people you have actually messaged get the heads up. This is the sensible middle ground for most people.
Custom
You hand pick who to inform. Useful if you only want close family or a work group to know, and you would rather not broadcast the change to that dentist you messaged once in 2019.
Group members always see the change inside shared groups regardless of what you pick here, because your identity in the group updates automatically.
Telling people your new number the clean way
Notifications are easy to miss. If the new number is one you want people to reach you on directly, it helps to share a link that opens a chat with you in one tap, rather than making friends save the digits by hand. You can build one for free with the WhatsApp Link Generator, drop the link in your bio, your email signature, or a broadcast message, and anyone who taps it lands straight in a conversation with your new number. It removes the friction of contacts mistyping the country code.
The limits: what changing your number does not do
Be honest with yourself about the trade offs.
- Your old number is released from WhatsApp. Anyone who messages the old number will no longer reach you, and if the number gets reassigned to a stranger later, that stranger can register it on WhatsApp as their own.
- People who only saved your old number will not automatically have the new one in their contacts. The notification tells them it changed, but they still need to save the new digits to see you normally.
- Changing your number does not move chats to a different phone. That is a separate task. If you are getting a new number and a new phone at the same time, transfer your chats to the new phone first (or restore from backup), then run Change Number on that device.
- One on one chat threads keep their history, but the other person’s copy still shows the old contact until they update your details.
Common mistakes people make
Uninstalling the app first
Do not delete WhatsApp and reinstall it with the new SIM thinking that is how you switch. That registers a brand new account and your chats do not follow unless you restore a backup, and even then your old number is gone from the account. Use Change Number from inside the existing app instead.
Entering the wrong country code
A missing or wrong country code is the number one reason verification fails. Type both numbers in full international format.
Letting the new number lapse
If the new SIM is not yet activated with your carrier, it cannot receive the verification code. Confirm the new line is live and can get texts before you begin.
Troubleshooting and a note on etiquette
If the verification code never arrives, wait the full countdown, then request a call instead of an SMS. On a dual SIM phone, make sure the code is going to the SIM you expect. If the process stalls, close the app fully and reopen it rather than tapping repeatedly.
On etiquette, resist the urge to notify all contacts unless you genuinely want everyone to know. A quiet switch with a custom list, plus a short personal message to the people who matter, feels far more considerate than a mass ping. Something as simple as “Hey, this is my new WhatsApp number, saving it now so you do not lose me” does the job.
Conclusion
Changing your WhatsApp number is one of those tasks that sounds scary and turns out to be routine. As long as you back up first, keep both numbers reachable, and use the Change Number tool inside the app rather than reinstalling, your chats, groups, and media all come along for the ride. Take the two extra minutes to prepare, pick a sensible notification setting, and share your new number in a way people can actually act on. Do that, and the only thing that changes is the number itself.
Frequently Asked Questions
Will I lose my chats if I change my WhatsApp number?
No. When you use the Change Number feature inside WhatsApp on the same phone, your entire chat history, media, groups, and settings stay on the device and move to the new number automatically. The one thing that ends is access through your old number, which gets released from WhatsApp.
Do I need the new SIM in my phone to change my number?
Not necessarily. You mainly need to receive the six digit verification code sent to the new number by SMS or phone call. You can read that code from a second phone holding the new SIM, but the new line must be active with your carrier so it can actually receive the code.
Can I change my WhatsApp number from WhatsApp Web or the desktop app?
No. The Change Number option only exists in the mobile app under Settings, then Account, then Change Number. WhatsApp Web and Desktop are companion clients that follow your phone, so do the switch on your phone and your linked sessions stay connected.
What happens to people who only have my old number saved?
They receive a notification that your number changed if you choose to notify them, but they still need to save the new number in their contacts to see you normally. Sharing a click to chat link is an easy way to help them reach the new number without typing it manually.
Is changing my number the same as moving WhatsApp to a new phone?
No, they are two separate tasks. Change Number switches the number on your current device. If you are also getting a new phone, transfer your chats to that phone first (or restore from backup), then run Change Number on the new device.
