Everytime I try and turn on Wi-Fi calling this notification pops us sayin Error: ER05. It tells me my SIM card needs to be updated. Is there anyway to do this without bringing it into the store?
you need a new SIM card.
you can order one online -- but they're free exchange in store.
Did you switch to the sim card that came with the device?
I have the same problem. I believe the Tmobile rep switch the original card that came with the phone with another sim card for some reason. I now have the TM9073. Dont know if this is the issue.
The sim card that is required for your device to be able to wifi call is labeled with a TM9177 so if you have a TM9073 you need to update that at your local T-Mobile store.
Changed my sim card to a TM9177 and it worked. Thanks Keith. Happy New Year to everyone!
Awesome news thanks for letting us know so others may benifit!
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