Is my iphone only good w ATT, unlocked, other?

If you didn't submit a request to AT&T then no your phone is not unlocked. Assuming that your iPhone 4 is no longer under contract, and you don't owe them any money, then submit a request to have it unlocked.

https://www.att.com/deviceunlock/client/en_US/termsAndCondition

You'll get far more money for your iPhone 4 if you request that AT&T authorize unlocking it. If you do that, that means the buyer can use it on any GSM network they want. Keep in mind, YOU must do this BEFORE you sell it. AT&T will only authorize the unlocking of an iPhone for current/former customers that used the phone on their network. There is no charge to get the phone unlocked. Use this:

https://www.att.com/deviceunlock/client/en_US/termsAndCondition

That's correct since we are talking about Carrier Unlocking. A Carrier Locked phone is one that will work only with a particular operator. This is done so that users can't jump ship with a subsidized handset. So if you sell it to nother AT&T customer, you needn't worry about unlocking it.

When an iPhone is purchased through a carrier, the cost is subsidized, so the phone is locked to that particular carrier, which in your case is AT&T. Contrary to what wjosten stated, the phone can be unlocked through a request submitted by the individual who purchases your iPhone, whether or not they are an AT&T customer, which is stated right on the web site that I gave you, "Non-Customer OR Paid No Commitment". I know, because I had the iPhone 4 I purchased off Craigslist, unlocked by submitting a request myself. When the original owner has a phone unlocked, it saves the purchaser time and will add about $50 in value to the phone, so that's something to consider.

Should you decide to not submit a request yourself, and you sell it on Craigslist, make sure the customer gets a receipt, as they will have to submit that to AT&T along with their request. If you sell the phone on ebay, a receipt is generated automatically.

Hope that answers your question.

seanachai51 wrote:

Contrary to what wjosten stated, the phone can be unlocked through a request submitted by the individual who purchases your iPhone, whether or not they are an AT&T customer

Really? Well, contrary to what you've posted, these are in fact AT&T's requirements:

AT&T will unlock an iPhone under the following circumstances:

• The person requesting the unlock is:
  • A current AT&T customer, or
  • A former AT&T customer who can provide the phone number or account number for the account.
• The iPhone was designed for use on the AT&T network.
• All contract obligations, including any term commitment, associated with the device to be unlocked have been fully satisfied.
• The iPhone has not been reported lost or stolen.

From here:

http://www.att.com/esupport/article.jsp?sid=KB414532&cv=820&title=What%20are%20t he%20eligibility%20requirements%20for%20unlocking%20iPhone%3F#fbid=L5pP0KWR9XC

Well, then I guess I and two other people I work with, who purchased their iPhones off ebay and also filed their request as "Non-Customers", never really had our phones unlocked by AT&T, which is strange since the three of us are using our phones on T-Mobile.

You're welcome.

All of your iPhones may have been purchased as non-contract iPhones in which case AT&T will unlock it even if you are not the current owner.

No, all three phones were contract phones, and like I said we're using them on T-Mobile. This is a screenshot of my iPhone 4.

How do you know that they were subsidized contract iPhones?

The people we bought them from told us they were, and in my case I called AT&T prior to purchasing my iPhone 4.

Whatever, seems I'd to ask 3 different people. And why did AT&T say they would unlock it despite the fact you didn't qualify?