I'm also getting something weird with the 8ta simcard on my iPad.
I got one simcard on 30 April and it worked perfectly. 3 bars 3G signal most of the time.
Got a new sim about a month ago and it's giving me so much crap.
It's almost always on EDGE and quite often, all the signal goes away and it just says "No Service".
I can take out the sim and put it back, restart the device, turn on airplane mode and turn it off so it searches for the carrier again, etc, etc. nothing works.
All i can do is wait. Sometimes it stays like that only for a couple of minutes but sometimes it stays like that for a long time.
Can't go get a new sim now cause i still have data left.
I know it's not my iPad cause I has the old sim for months and it never happened once.
I gave the old sim to a family member to use in an iPad and it still works perfectly, even when I insert it in my iPad...
The sim does use MTN's network.
So what's up with 8ta? Inconsistencies with the sims?