It appears as if the security threat of ‘SIM jacking’ is increasing and one of the recommended ways of protecting against it is to ‘Lock your phone number with your service provider’ - Many network service providers offer Port Freeze or Number Lock to protect your mobile number from unauthorized transfer. Once activated, you can't port your number to another line or carrier unless you remove the lock, either with a PIN or by walking into the store. If your carrier allows this feature, it's an excellent way to beef up your SIM protection.
Does EE offer this service?
