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SAme Problem only mine is a 2G and I don't have SIm

I want to find the firmware so that i can unlock it.

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I got this phone ok and i put in a new sim now when i turn on my apple iphone all it keeps saying issim locked and emergency calls only


Are you using an AT&T Sim Card?
IF you are not then the iPhone has to be unlocked in order to use with a non AT&T sim card.

You can google how to unlock iPhone or post a reply with the Model of the iPhone (2G, 3G, 3GS or 4) and the firmware Version you currently have.

To view the firmware version go to Setting-->General-->About--> Version

May 12, 2011 | Apple iPhone Smartphone

1 Answer

Taking a sim from a go phone and putting it in a black jack and it says it is not valid


Are both phones with the same company? Are both SIM cards active and working?
If both are with the same company, you may have an incompatable phone or incompatable SIM. 2G SIM cards will work on 3G phones (mostly) but 3/4G SIM cards are not compatable with 2G phones.

If the SIM cards are with different companies, you'll need to unlock the phone in order to use a SIM from a different carrier. Unlock codes can be purchased here: http://www.unlockitnow.com

May 11, 2011 | Computers & Internet

2 Answers

Invalid usim card


unlock phones are so unperdictable...there may not be a fix for this issue..other then getting an AT&T phone....and even if u are able to get it to start working again more then likely u wil continue to have many more isses..mainly becuz of the network changes..for example....using 3g and 3g only...last year the AT&T network was stil using both 2 and 3g network and there was even a few 2g SIM cards being sold in stores...now it almost all 3g..which of course complicates many things...even if u own a 2g AT&T phone a 3g SIM card can be and will be used on that phone....with unlock phones running on the 2g network the issues with not having a SIM card where possible...it was still unstable when wanting to use data services....but voice services were possible...now with everything going 3g...its makes things alot more complicated with AT&T if using a phone without SIM cards...if ur phone has the fuction to beable to shut off 3g networking and run on 2g.(like the apple iphone has) then try that....good luck


Apr 17, 2010 | LG KU990 Viewty

1 Answer

Unlock a cect p168


We provide iUnlock Solution : step-by-step tutorial with latest softwares in order to easily unlock/jailbreak your iPhone 2G/3G and iPod Touch 1G/2G.All you have to do is to access iUnlock, download given software and follow the instruction of tutorial. iUnlock is fully compatible with 2G/3G iPhone and iPod Touch 1G/2G with latest firmware 2.2.1.Win XP, Vista and Mac are totally supported.

May 18, 2009 | Dual Electronics CECT P168 Cellular Phone

1 Answer

Frozen screen on 2g iphone 8gb


if it is the 2g model it is still reversible
  • you will need to unlock it and you will be fine

if it is the 3g model you are stuck at the min

Feb 18, 2009 | Apple iPhone Smartphone

1 Answer

Tmobile sim still doesnt work after being unlocked.


if you have a 3g you cannot upgrade to 3.0 firmware and unlock it.


2g solution


3g solution

Jan 02, 2009 | Apple iPhone Smartphone

1 Answer

Iphone 2g unlocked,cannot connect w/ edge. wifi is working


Jailbreaking your iPhone to 2.2 is going to mess up your phone. I've got a jailbroken 2.2 iPod Touch and it's ok - a friend of mine also tried to jailbreak his iPhone to 2.2 and lost connections as well.

Downgrade back to 2.1 and you should be ok.


Dec 02, 2008 | Apple iPhone Smartphone

2 Answers

Unlocking locked sim


If you have a 2g iphone following this tutorial will unlock your ipohone to use with any carrier.

I have my iphone unlocked to T-Mobile & updated to the 3.0 firmware

Jan 19, 2008 | Apple iPhone Smartphone

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