Unlocked MDA Vario says wrong or incorrect sim card
I unlocked my MDA Vario with the tool which can be found on this forum.
At first everything seemed to be OK for one or two days. It accepted my "Base-simcard" and I could use the phone-function.
Since yesterday I frequently get a message which says there is no or a wrong or sim card inserted.
When I remove the sim card, replace it and start the Vario, everything works again.
Sometimes I just have to put the wizard off and on again and it's ok again.
This happened already a few times...
Does anyone know what causes this problem?
Is it possible that the unlocking tool doesn't do the job 100% right?
Or maybe T-Mobile inserted an extra check for non-T-Mobile sim cards in the ROM part?