Banky team Reviewed editorial answerSIM swap means that a scammer successfully transfers your mobile number to a SIM card under their control.
This is dangerous because confirmation messages and calls may end up going to them instead of you.
A strong warning sign is if your line suddenly disconnects for no reason while the rest of the network remains active.
If this happens, contact your mobile carrier immediately, and then your bank to secure the services associated with your number and review any transactions or login attempts.
Don't rely solely on SMS for protection if your bank offers stronger authentication methods.