Account information - Typically, this comprises your first and last name, phone number, and a PIN (or your Social Security Number). IMEI number - Your iPhone’s IMEI number is an identifying tag found next to the “IMEI” heading in the “About” section of the “General” page, which you’ll find near the top of the Settings app. Other information - Your carrier may request details on your current plan, how long you’ve had your iPhone, and how much you’ve paid off if you’re on a contract. Even though carriers typically have access to this kind of information, it’s a good idea to have it on-hand just in case. If you’re in the military, you’ll need to bring your deployment papers.
Verizon - Most Verizon phones come unlocked to begin with. Call or visit you local Verizon store to make sure your iPhone can support your preferred network. [2] X Research source Sprint - Sprint will unlock your phone if it has been active on the Sprint network for at least 50 days, you have fulfilled the conditions of your lease or purchase, the phone isn’t locked by law enforcement or flagged for criminal activity, and you haven’t missed any payments. [3] X Research source AT&T - AT&T will unlock your phone if it is designed for and used on the AT&T network at the time of the call and not flagged for criminal activity. You also need to have paid any early termination fees or contractual obligations. [4] X Research source T-Mobile - If your phone is registered to T-mobile, you have completely paid for the phone, the phone has been on the T-mobile network for either a year (prepaid phones) or 40 days (month-to-month phones), it hasn’t been flagged for criminal activity, and you haven’t missed any payments, T-Mobile will unlock your phone for you. [5] X Research source Ask your service provider about device compatibility on other networks. Some phones won’t work on other networks’ cellular frequencies. [6] X Research source
After your carrier unlocks your phone, you’ll need to visit a different carrier whom you’d like to use and purchase a SIM card from them. To use another carrier’s network on your iPhone, simply insert that carrier’s SIM card into your iPhone. The carrier must first activate the SIM.
For example, trying to activate a Verizon iPhone on an AT&T network might not work due to the iPhone being built to work with CDMA rather than GSM. [7] X Research source The best way to figure out whether or not your phone will support your preferred network is by calling the carrier to which you’d like to switch and asking them.
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Never enter your phone’s information or your card details on a website that doesn’t start with “HTTPS”. There are several apps that will claim to unlock your phone, but these are scams at best. Don’t download unlocking software to your phone.
On any iPhone, you can dial *#06# and your IMEI code will be displayed. You can also open your iPhone’s Settings, tap General, tap About, and look at the number next to “IMEI” near the bottom of the page.
Be sure to select all of the correct information about your device so that you get a code that works for your phone.
