Well, you could use a landline or another phone - I keep my old phones if they're still working OK so I've always got a usable phone to put my SIM card in if my daily driver dies.
What phone do you have, did you or someone else flash non-stock firmware to it? This error is a security protocol from T-Mobile if it detects the firmware has been modified. The fix would presumably be to flash it back to stock if this is the case. However the only references I can find to this error are several years old and the link to the securelock site is no longer valid.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.