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Jophster

macrumors member
Original poster
Jan 4, 2010
75
0
Hi
Ok so long story short.
I have an iPhone 3G 16GB (3.1.2 J/B + UNLOCKED using blackra1n)

I have a T-Mobile sim, O2 Sim & 3 Sim.

I want to use my T-Mobile sim, which barely works, heres why:

When I turn on the phone, turn airplane on/off or 3G on/off, I get pretty good 3G signal, after a few mins on three/four bars of 3G, it drops down to 2G GPRS and will NEVER jump back up again.

When I put in my O2 sim, it stays on 3G with three bars without going down to EDGE at all.

Sometimes my 3G signal is better than the 2G signal it drops down to!

N.B Photos incl. to show this!

Hope someone can help!
Thanks!
Joseph.
 

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