I've payed off my S8+ and have been told by Sprint it's showing unlocked on their end but I still get invalid sim when I insert T Mobile SIM. Also getting UICC unlock internal error 407.
Hey tbotting! Do you have a Sprint SIM card installed in that J3 when attempting to unlock it?
I am also having this same problem! I have called and called to no avail, someone put the request in wrong or something like that and now it keeps trying to register to an account
After getting the unlock signal, did you complete the unlock by unlocking the UICC and profile?
Yes that is correct. Did the phone crash during that or after the new sim is in? Is the Sprint logo still showing?
When I hit UICC unlock, it errored out and said could not be unlocked "Internal Error: 407" as in I hit update PRL, profile and UICC unlock with the Sprint SIM in, I did not change the SIM card out, when I hit UICC unlock is when that 407 came up
Hey TBotting, Can you send me a Private Message with the IMEI of that J3? I'll need to take a look at this.