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Old Jan 14, 2011, 12:06 AM   #1
tolu
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Exclamation Help! iPhone won't recognize Sim card

My unlocked iPhone 3g iOs 4.0.1 suddenly stopped recognizing my sim card and any other sim. It says sim failure. Don't know what to do. Pls pls pls help!
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Old Jan 14, 2011, 09:12 AM   #2
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Originally Posted by tolu View Post
My unlocked iPhone 3g iOs 4.0.1 suddenly stopped recognizing my sim card and any other sim. It says sim failure. Don't know what to do. Pls pls pls help!
What is your iPhone baseband? If it's 5.14 or 5.15 that's your problem.
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Old Jan 14, 2011, 09:51 AM   #3
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Originally Posted by PsstGreek View Post
What is your iPhone baseband? If it's 5.14 or 5.15 that's your problem.
I have a similar problem, I have bought a locked iPhone 4 32gb from the US (I'm using it in Greece currently) in the summer, I have the 4.0 iOS, baseband 01.59.00 and jailbroken. For the last days, several times the phone gets the no service message or sim failure, I have to either switch on and off the airplane mode, or to reset network settings or to hard reset to make it get a signal. Do you know what is going on? The problem has occured only a couple of times since I got the phone but not so often as the last 2 days.
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Old Jan 14, 2011, 10:57 AM   #4
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I have a similar problem, I have bought a locked iPhone 4 32gb from the US (I'm using it in Greece currently) in the summer, I have the 4.0 iOS, baseband 01.59.00 and jailbroken. For the last days, several times the phone gets the no service message or sim failure, I have to either switch on and off the airplane mode, or to reset network settings or to hard reset to make it get a signal. Do you know what is going on? The problem has occured only a couple of times since I got the phone but not so often as the last 2 days.
Is the iPhone unlocked as well, or no? That sometimes happens to me with my iPhone 4 on AT&T. It drives me insane. A hard reset fixes the issue.
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Old Jan 15, 2011, 02:36 AM   #5
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Is the iPhone unlocked as well, or no? That sometimes happens to me with my iPhone 4 on AT&T. It drives me insane. A hard reset fixes the issue.
I think the phone is still locked, I have tried hard reset, it works fine for a couple of hours and then ''no service'' or sim failure, I will try to update to 4.1 this weekend, keeping the same baseband ofcourse, hopefully I will get some better results
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Old Jan 15, 2011, 09:44 AM   #6
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I think the phone is still locked, I have tried hard reset, it works fine for a couple of hours and then ''no service'' or sim failure, I will try to update to 4.1 this weekend, keeping the same baseband ofcourse, hopefully I will get some better results
Remember you can only update to 4.1 if you have SHSH saved.
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Old Jan 15, 2011, 08:28 PM   #7
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Exclamation Re: Help! my iPhone won't recognize sim card

Psst Greek, don't know what my iPhone baseband is. Still don't know what to do!
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Old Jan 15, 2011, 10:58 PM   #8
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Psst Greek, don't know what my iPhone baseband is. Still don't know what to do!
To check the baseband go to Settings > General Settings > About > Modem Firmware.
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Old Jan 16, 2011, 09:10 AM   #9
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Exclamation Re: Help! my iphone won't recognize sim card

Psst Greek, my iphone baseband is 5.13.04. What next?
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Old Jan 16, 2011, 10:38 AM   #10
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Psst Greek, my iphone baseband is 5.13.04. What next?
Is Ultrasn0w installed? Cydia > Manage > Resources > repo666.ultrasn0w.com > Ultrasn0w > Install
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Old Jan 16, 2011, 11:31 AM   #11
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Exclamation Re: Help! my iPhone won't recognize sim card

Psst Greek, I have ultrasnOw installed. But's turned off in mobile substrate addons. Do I have to uninstall it or turn it on? Also serial faker is turned off, though I don't know what it is!
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Old Jan 16, 2011, 11:33 AM   #12
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Remember you can only update to 4.1 if you have SHSH saved.
Saved my shsh with tinyubrella, but when i try to manually restore to 4.1, itunes say cannot restore error 1604..
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Old Jan 16, 2011, 11:36 AM   #13
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Saved my shsh with tinyubrella, but when i try to manually restore to 4.1, itunes say cannot restore error 1604..
Use TinyUmbrella to kick your iPhone out of recovery.
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Old Jan 16, 2011, 11:37 AM   #14
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Psst Greek, I have ultrasnOw installed. But's turned off in mobile substrate addons. Do I have to uninstall it or turn it on? Also serial faker is turned off, though I don't know what it is!
If you're using T-Mobile U.S. make sure you have 3G off. It could be that something is wrong with your sim card. Uninstall and reinstall ultrasn0w.
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Old Jan 16, 2011, 11:57 AM   #15
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Use TinyUmbrella to kick your iPhone out of recovery.
done that, iphone is still with 4.0 ios, searching forum for 1604 error solution, thanks for your help
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Old Jan 16, 2011, 12:10 PM   #16
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done that, iphone is still with 4.0 ios, searching forum for 1604 error solution, thanks for your help
Are your host files edited? After that, put your iPhone in DFU mode then restore to 4.1
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Old Jan 17, 2011, 07:18 AM   #17
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Are your host files edited? After that, put your iPhone in DFU mode then restore to 4.1
i will try to do that the soonest possible, I will get back to you with the results
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Old Jan 17, 2011, 03:24 PM   #18
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Are your host files edited? After that, put your iPhone in DFU mode then restore to 4.1
put it in dfu mode and restored it to 4.1, got the 1004 error at the end of the restore but now i'm stuck on dfu mode. Any ideas how to get out? tinyumbrella wont recognise the device as connected, tried holding home and power button but still dead..
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