WhatsApp only works when the main user device is connected to the internet and turned on. However, what happens when a user loses his smartphone and is unable to access WhatsApp on any other device. The messaging platform specifies a few steps that can be taken to stop anyone else from accessing or abusing a WhatsApp account. Since it is not possible to disable WhatsApp remotely from another device, the user can follow these steps for security.
The first thing a user has to do is lock his SIM card. The user must call his network provider as soon as possible to lock the SIM card. You will not be able to verify the account on that phone again, as you should be able to receive SMS or calls to verify the account.
After the SIM is locked, the user will have two options, use a new SIM card with the same number to activate WhatsApp on your new phone. This is a quick way to activate your account on a stolen phone. WhatsApp can only be activated with one phone number on one device at a time.
The second option would be to cancel the account. To do so, the user will have to email the company the phrase “Lost / Shared: Please close my account” in the email body and enter the phone number in full international format (use 91 as the starting point for Indian numbers).
If it doesn’t work, your contacts can still see your profile and send messages, which will remain in standby for up to 30 days. If the user was able to update the account before it was deleted, they would receive any pending messages on the new phone and would still be present in all group chats. In the event that a user does not use their account within 30 days, it will be permanently deleted.
Even if the SIM card is locked and the phone service is disabled, WhatsApp can be used on Wi-Fi if the user does not contact the company with the account lock request.
If a user has been able to backup using Google Drive, Cloud or OneDrive before the phone is lost, they can restore their chat history.