I jailbreaked and unlocked my 3GS to use an orange sim as a test.
All done and working ok etc
Problem is I tried sending it texts but nothing happened so tried calling and got dumped through to the Orange answerphone straight away.
I used the phone to dial out and it worked, I then got a load of missed call and text messages alerts. Maybe it all need to kick in and join Orange or something so tried to text it again, back to not being recieved so tried calling once again but straight through to answerphone hmmm. I then started poking around the phone settings, went into call waiting it span the in use icon around and then reported it was on so I came out then a few seconds later I got a missed call and text alert, ***!
After much mucking about it seems I can send and dial out but for incoming I half to either request something off the network or dial/text then I get incoming for a bit.
With the o2 sim I can call in/out and text in/out fine. Both give me full signal but E so I'm guessing edge, I restart and change settings during sim swop, I know unless its 3g I can't send/recieve data at the same time but it works on o2 sim and if so whats sending on the orange sim that blocks incoming? The stats say 0 data and 3g is off.
What gives?