How to identify Factory Unlocked iPhone 4 ?

Hello I would like to know how I can identify a factory Unlocked iPhone 4 without taking it out of the box, is there some special serial number to differentiate a Factory Unlocked iPhone 4 from others that are not ?

Intel Core 2 Quad Q9300 - Gigabyte EP45T-DS3R, Windows 7, iPhone 3GS 32Gb - iPhone OS 3.1.2

Posted on Sep 2, 2010 9:05 PM

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80 replies

Jul 27, 2012 7:21 PM in response to tonyacos

You can check the lock status and other information of an iPhone (perhaps phones sold in any country or perhaps only US sold iPhones) at http://iphoneoperatorcheck.com/. In place of the IMEI you can enter the serial number and get the same information. My experience is that the information provided is very accurate. One caveat is that for a phone that was sold that was originally locked to a carrier but later unlocked through the carrier, the lock status doesn't appear to be accurate until the phone is activated with Apple. If you have an AT&T iPhone and have it unlocked through AT&T, it won't show as unlocked until you connect the phone to iTunes and update the carrier settings. The status on the preceeding web site appears to be real time. I had an AT&T iPhone which I had unlocked through AT&T, checked the status and it showed locked to AT&T, updated the carrier settings in iTunes and received the "Congragulations, your iPhone has been unlocked", then checked the lock status again and it was changed to unlocked. Also, if you do a restore, it appears that the status will change back to 'locked" until you update the carrier settings again in iTunes.


Now a couple of comments on previous postings;

- AT&T, Verizon and Sprint all sell iPhones in the US and AT&T and Verizon will unlock phones sold through them under certain conditions.

- Contrary to some earlier comments regarding AT&T unlock requirements, you do not need to be a current or former AT&T wireless customer. The only requirement is that the contract under which the phone was purchased was completed satisfactorily per the contract terms.

- Apple also sells full price phones which are unlocked.

- Contrary to earlier posts, there is nothing in the serial number which indicates whether the phone is locked or unlocked.

- A prepaid monthly contract has 15% less in taxes compared to a post paid monthly contract. The free/low price subsidized phones sold by the carriers with a contract are terrible deals. Over a 2 year contract you will pay up to $1,200 more in montly service fees to save $500 on the price of the phone.

- An option to the high monthly fees is to buy a used iPhone on eBay and get a pre-paid monthly contract ($45 plus sales tax for everything for 30 days) on Straight Talk which uses AT&T's cell network.

Nov 17, 2012 4:51 AM in response to XoXoL

There is no list of factory unlocked models. Model numbers are not a reliable indicator of whether an iPhone is unlocked. The only possible exception would be the ability to identify phones originating in countries where locking is either illegal, and all phones are sold unlocked (India, for example) or where none of the carriers offer unlocking and unlocked phones are not sole (e.g. Japan).

Nov 17, 2012 5:04 AM in response to tonyacos

You might try to enter your IMEI in http://www.iphoneox.com to determine lock status.


The only caveat is that on a different site which performed the same function, if you had an iPhone which was originally sold by AT&T but later Apple unlocked via a request through AT&T, the phone would show as locked until you plugged the phone into iTunes. However, if you believe your iPhone is unlocked and you connect it to iTunes and then check iphoneox.com and it shows as unlocked then you can trust that you are officially unlocked. If you see an app named Cydia on your iPhone then your phone has been jailbroken and you might have an unofficial unlock.

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How to identify Factory Unlocked iPhone 4 ?

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