i have a iphone 3g ver2.1, jailbroken.
was working with turbosim on orange,stupidly i connected it to my computer and itunes with the turbosim in and it said invalid sim.
now when i power up my iphone i get no service.
hmm I've connected mines to iTunes and haven't had this problem!? When I restart my phone it takes about 30 seconds and then mines will work. I agree try a restore. I took a program off and when I did I couldn't receive text messages! Restore is the way to go.
You need to download the 2.1 firmware (not from this site) it didn't work for me here, and follow the instructions on how to restore it. You will have to hold shift and find your firmware when you are doing the restore through itunes. There are tuturials on this subject but its pretty easy and hopefully you will be good to go.
This is for a 3G (most likely applies to 2G's. But who uses turbo sims for 2G's these days?)
I have been having a ton of trouble lately with my turbo sim, so have about 6 other people that I know. I have discovered a way that you can restore service and edge at anytime without a computer or cables or anything. All you have to do is follow these directions in the EXACT order posted below.
When you notice loss of Edge or your phone is constantly looking for service or dropping calls, do EXACTLY the following:
1.) Reset network services
2.) IMMEDIATELY put phone into airplane mode
3.) Go to Settings>General>Network settings> and turn on Data Roaming and disable 3G
4.) click Cellular Data Network and type in the apn (Tmobile: epc.tmobile.com)
5.) Restart the phone and let it boot up completely
6.) Remove Airplane mode
Phone should now be working perfectly as soon as it finds service. Repeat as necessary.
Alternatively you can do the following to restore service without edge (sometimes the phone just wont work with edge)
1.) Reset network services
2.) IMMEDIATELY put phone into airplane mode
3.) Enable wifi
4.) Go to cydia and download sbsettings by big boss
5.) open the sb control panel and disable Edge
6.) Go to Settings>General>Network settings> and turn OFF Data Roaming and disable 3G
7.) Go to Settings>General> turn OFF Location services
8.) Restart the phone and let it boot up completely
9.) Remove Airplane mode
There it is. Hopefully this can help a bunch of people who are struggling with their turbo sims.
Im thinking maybe this should be moved to another section, like unlocking or tmobile specific