I have an Iphone which was locked to AT & T. I had it unlocked a couple of weeks ago, and was using my Orange Sim. All was fine, and working. I think i may have upgraded to the new itunes that was available, and now my phone comes up with incorrect sim message and that Ineed to insert an unlocked sim to activate!!
How will I be able to get this fixed?
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There is more than an issue to cause this. 1st that some iphones are locked on a specific operators, with a contract for one or couple of years. after end of contract you can unlock the iphone at the operator and can use any sim card. 2nd the sim card it self may be damaged & cannot be read by iphone, please try it in another phone and see if it is working.
To know if your iphone is officially locked/unlocked by the model number, you can google it.
Hi if your iphone 4s is not accepting your sim card whether it is displaying messages like sim invalid ,sim lock and so on once you insert your sim in it then it mean your iphone 4s is locked to some other network provider due to this it wont accept your sim until you unlock it .You can easily unlock your iphone 4s using sites like WickedUnlock.com here they are rendering remote unlocking service to unlock all model iphone from network lock ...You first check that whether the service is available for your country and network provider .If yes then pay for it and unlock your iphone 4s then freely use it with any GSM sim .
You can get your iPhone unlocked from Network lock using Remote unlocking method.Which is the safe and secure method to unlock iPhone.You can get this service from ClassicUnlocking.com here you need to specify your country,Network name to which it is locked,IMEI number of your iphone.Here they unlock your iphone using latest versions of iTunes.This is a permanent unlocking solution.Both upgrade and downgrade will not lock your iphone again.
You can remove the "Sim Lock" error from your iPhone using Remote unlocking method.Which is the safe and secure method to unlock iPhone.You can get this service from Unlock-Zone.com here you need to specify your country,Network name to which it is locked,IMEI number of your iPhone.Here they unlock your iPhone using latest versions of iTunes.This is permanent unlocking solution.Both upgrading and Downgrading will not lock your iPhone again.
Your iPhone says "Invalid Sim" means that your phone is locked to particular Network.To solve this problem, you need to get your iPhone unlocked.You can get your iPhone unlocked from Network lock using Remote unlocking method.Which is the safe and secure method to unlock iPhone.You can get this service from Unlock-Zone.com here you need to specify your country,Network name to which it is locked,IMEI number of your iPhone.And you can get free unlocking free unlocking instructions from MobileUnlockGuide.com using this you can unlock your iphone from Network lock easily.
HI if you want to activate your iphone with straight talk sim then you must first check that whether the iphone is locked or unlocked one .If your iphone is unlocked then you can freely use it with any GSM sim .Else if the iphone is locked to some other network provider then until you unlock it you can't use it with any other GSM sim ..You can easily get your iphone unlocked using Mobile-Unlocker.com here they are providing remote unlocking service to unlock all model iphone from network lock .
Your phone must be jail broken and unlocked to use non AT&T
sim card. Be sure you have correctly installed redsn0w and ultrasn0w
unlocker. If you have recently updated your phone that will undo your
jailbreak and unlock. You will need to reapply them for the version of
your iPhone OS if they are available.