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Signs to investigate when you suspect your mobile number has been targeted.
Short answer
Look for unexpected loss of cellular service, SIM-related notifications, unfamiliar account changes, or recovery events. Contact your mobile provider through an official channel if something does not look right.
A temporary loss of service does not automatically mean a SIM swap, but sudden unexplained loss of service deserves attention.
Check whether you received messages about a SIM replacement, number transfer, or account change that you did not request.
Contact your mobile provider through an official channel and ask them to check the status of your number.
Secure important accounts that rely heavily on SMS recovery and consider stronger authentication methods where available.
Check it now
The essentials for keeping your most important accounts locked down.
Open the checkSomething already happened?
If your phone suddenly loses mobile service without an obvious reason and you suspect a SIM swap, contact your mobile provider immediately and secure important accounts using trusted recovery methods.
If your WhatsApp account may have been compromised, secure the account through the official WhatsApp recovery process, check linked devices, protect your phone number and warn contacts if messages were sent from your account.
If you see activity you don't recognise, secure the affected account directly, change the password, enable MFA, review recent activity and linked devices, and contact the provider if necessary.
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