When you purchase a cell phone from a carrier, it generally comes locked — meaning it includes a software code that ensures your mobile device connects only to a specific network so you can’t get or use a signal with any other service.
- What you’ll need
- Unlocking a Verizon phone
- Unlocking an AT&T phone
- Unlocking a T-Mobile phone
- Unlocking a Sprint phone
- Unlocking a Metro by T-Mobile phone
- Unlocking a Boost Mobile phone
- Unlocking a U.S. Cellular phone
- iPhone error message? Here’s what to do
- Unlocking your prepaid or fully paid phone
- Third-party lock breakers
- Buying unlocked phones
Unlocking your phone means that you can switch carriers if you’re dissatisfied with the service, move to a different region, are traveling, or want to keep your old handset when you change networks. If you’re looking to switch providers or just hoping to add some value when selling your phone, unlocking it is a must. Don’t worry — it’s completely legal to do.
While most cell phone operators offer unlocking services after you’ve fully paid off your phone and all installments, or your contract term has expired, it doesn’t always happen automatically. AT&T, Boost Mobile, Sprint, T-Mobile, Verizon, Virgin Mobile, Xfinity, and many more offer unlocking services. The process can be tedious and differs depending on the provider, so we’ve broken down the steps for each one. It’s generally a good idea to unlock your phone when it goes off-contract. On the Apple side, if you paid for your iPhone in full upon purchase, then it’s probably unlocked already. Unlocked phones are generally worth more than locked ones.
Unlocking a phone that’s come off contract should be second nature, and you will find it’s worth the effort. The difficulty of unlocking a phone can vary based on the carrier, and what is a straightforward process with one can be a pain with another. No matter how challenging the unlocking procedure gets, it’s a good idea to unlock your phone before you leave your current carrier because it will likely prove even tougher after your contract has run out. Even if you’re not planning on using your old phone when you leave, who knows when you might need it in the future? While procedures vary, there’s a list of information you’ll generally need to unlock your phone, so you can keep it handy before you start.
- Account holder’s name and account number
- IMEI number of your device
- Your phone number
- Account holder’s Social Security number or password
- A completed contract and/or device payment plan
- Overseas deployment papers, for military personnel who want to unlock the phone before the contract expires
With that information, here’s how each carrier handles unlocking your phone.
Verizon locks its devices — but only for a short time. According to, newly purchased devices are locked to Verizon’s networks for 60 days after purchase to help mitigate theft and other fraudulent activity. This rule applies to both postpaid and prepaid devices, and the lock is automatically removed after 60 days. This means that — unlike most other carriers — there isn’t really a list of criteria to unlock your phone. Deployed military are exempt from this rule, and can request an unlock during this period by calling Verizon’s support line at 800-922-0204.
Even though SIM-equipped Verizon phones can be used on AT&T, T-Mobile, or other GSM carriers, the phone will need roaming GSM radios to make calls and send texts in the U.S. While most recent Verizon handsets work just fine on American GSM bands, your mileage will vary when it comes to LTE support. Verizon’s unlocking policies don’t mention international devices, which may still require assistance, in which case you can call the company’s support line at 800-922-0204.
Off-the-shelf Phone-in-a-Box prepaid 4G handsets are locked to the network for the amount of time specified on the box. You may also have to call Verizon’s prepaid support line at 888-294-6804 to start the unlock process.
Unlocking a phone from AT&T is a bit more complicated than with Verizon. While you’ll need to, it’s still not difficult. Here’s the you’ll need to unlock your AT&T handset.
- The device must work on AT&T’s networks.
- If you’re a current customer, your contract or installment plan must be fully paid off (including early termination fees). If not, pay off your plan early and wait 48 hours before making a request.
- It must not have been reported lost or stolen or involved in fraud.
- The account must be in “good standing” — not associated with fraudulent activity.
- It must not be active on a different AT&T customer’s account.
- On a postpaid account, it must have been active for at least 60 days, with “no past due or unpaid balance.”
- If it’s an AT&T prepaid device, it must be in service for at least six months.
- If you’ve upgraded early, you must wait for the 14-day “buyer’s remorse” period (30 days for business customers) before unlocking your old phone.
- If it’s a business device, then you must have your company’s permission.
- For military personnel, email AT&T your TCS or PCS (Temporary/permanent change of station) documents to unlock before your contract or payments end.
AT&T offers anyou can complete online. Enter your AT&T mobile number — or if you’ve already switched — the IMEI number from your AT&T device. After submitting this form, you’ll have 24 hours to click the link from the confirmation email sent to you. AT&T will then send instructions for unlocking your device via text or email within two business days. AT&T no longer has a hard unlock limit per year, so unless you’re sending a hundred unlock requests a month don’t worry about being flagged as suspicious. You can check to see whether your request has been successful on . The network also offers limited unlocks via its support line at 800-331-0500, but doesn’t officially unlock handsets over the phone.
and codes provided by AT&T vary depending on the device. Apple iPhones don’t need an unlock code. Instead, after receiving the email approving your unlock request, just remove your AT&T SIM card and insert the SIM card for your new carrier to begin the setup process. Military members can unlock iPhones, including those on installment plans, but must register active-duty status when filling out AT&T’s forms.
T-Mobile may well be the Un-carrier, but it has some very similar criteria for unlocking to other carriers. Here’s what you’ll need to keep in mind if you want to:
- It must be a T-Mobile device.
- It must not have been reported lost, stolen, or blocked (via IMEI).
- It must be attached to an account that is in “good standing.”
- On postpaid accounts, the device must have been fully paid for and have been active for at least 40 days on the requesting line.
- On prepaid accounts, the device must have had more than $100 in refills since the first use date, or have been active for at least a year.
- If the device is on a service contract, at least 18 consecutive monthly payments must have been made.
- If using T-Mobile’s Equipment Installment Plan, or if your phone is leased through JUMP! On Demand, all payments must be made and the device must be fully paid for.
- You’ve made fewer than two unlock requests, per line, in the last 12 months.
- T-Mobile may request to see proof of purchase.
Some Android phones from the carrier can be unlocked through their Settings menus once eligibility requirements are met. Others, such as the Google Pixel and older Samsung devices, can use Device Unlock apps from T-Mobile. However, these methods are not compatible with all phones. The iPhone does not have an iOS version of the T-Mobile unlocking app.
T-Mobile should send unlock notifications to your iPhone once it is eligible, and may send you an unlock code. If you don’t have this information, contact T-Mobile directly and ask for it. Consult this T-Mobile page forregarding your Apple device.
You can otherwise unlock your phone through a live chat with a T-Mobile customer representative, or by calling 611 from a T-Mobile device, or 877-746-0909 from any other phone. Deployed military personnel can also get their phones unlocked as long as they’re in good standing, and can produce deployment papers.
After its merger with T-Mobile, Sprint is no longer an independent entity. Sprint says that domestic SIM unlock-capable devices launched after 2015 will automatically unlock when they become eligible on postpaid accounts. Sprint phones released before this period generally cannot be SIM unlocked. Before Sprint unlocks your phone, you’ll need to ensure your device and account meet the requirements below:
- It must be a device from Sprint.
- It must be domestic SIM Unlock capable (if unlocking in the U.S.).
- It must not have been reported lost, stolen or blocked, or associated with any fraud.
- It must be attached to an account in “good standing.”
- It must have been active for at least 40 days on the requesting line.
- There must be no outstanding or pending payments or fees.
If your device is currently inactive, you’ll want to call Sprint’s Customer Service at 888-211-4727 to get the device unlocked. Be prepared to potentially force an over-the-air update to get it unlocked, and you may have to submit to extra validation to ensure your device can be unlocked. If you have a Sprint iPhone that is still locked, your best bet is to call Customer Care. If you’re unlocking for international use, you must also ensure the device is capable of international SIM unlock.
If you’re a member of the U.S. military deployed overseas, with an account in good standing, and you want your Sprint phone unlocked, the carrier relaxes some of its requirements. Family members on the same account are subject to the policy. If you’re currently deployed overseas, you can unlock your phone by contacting Sprint Worldwide Care or by calling 888-226-7212.
There’s a massive caveat when it comes to Sprint’s unlocking capabilities, however. Because the carrier relied on a relatively obscure networking technology (CDMA), many Sprint-branded phones won’t be compatible with carriers running on GSM networks. You should first verify compatibility with your new carrier before unlocking your phone.
Metro by T-Mobile, formerly known as Metro PCS, is one of the most popular choices when it comes to prepaid services. While it bears the T-Mobile branding, the requirements to unlock your phone vary slightly.
- It must be from Metro.
- It must have had active service for a minimum of 180 consecutive days (about six months).
- If you have a warranty exchanged handset, then the 180 days is based on the activation date of the original phone.
- The 180-day service requirement is waived for military personnel — you can visit a corporate store with deployment papers and an agent will provide an unlock code for your device.
One method of unlocking is through the Device Unlock app, usually found in the Metro by T-Mobile folder of your phone. This can only be done with a select group of phones, including the Alcatel A30, LG Aristo, and Samsung J7 Prime.
If you have an Apple device, once it becomes eligible, Metro by T-Mobile will automatically authorize, and initiate unlock for your device remotely. To complete the unlock on your device, Verify that your device is eligible to be unlocked, make sure your device is on Wi-Fi, insert a non-T-Mobile SIM card into your iPhone and complete the first-time use. If the device has already been set up, follow the on-screen instructions to sign in to your Apple ID.
Since rebranding, Metro by T-Mobile now operates in the GSM network as opposed to CDMA, so your unlocked Metro phone will only be able to work with other GSM carriers like T-Mobile and AT&T.
Boost Mobile customers are now a part of DISH Wireless following Sprint’s merger with T-Mobile. As a result, there may be new requirements compared to the past. Like Metro by T-Mobile, A SIM unlock is not possible for many phones manufactured before 2015. So you want to ensure your Boost Mobile device is unlockable.
Boost Mobile will not automatically unlock your phone or notify you when you are eligible, so you’ll need to keep track of your progress. You can make an unlock request to the company’s customer care line at 888-402-7366, once you meet the below:
- It must be a SIM unlock capable Boost Mobile device.
- It must not be reported lost, stolen, or flagged as unlockable.
- The device has been active for at least 12 months on the account.
- The device’s account is in good standing and active.
Active military personnel can request an unlock with their deployment papers and an account in good standing. Moreover, family members on the same account are also eligible for SIM unlocks. Each phone number is allowed up to two unlocked devices during a 12-month period.
It remains to be seen what network versatility will be like for Boost Mobile phones going forward. Past phones from the carrier used the CDMA technology and were restricted to that when unlocking and switching. Newer phones have some compatibility with GSM/LTE networks through T-Mobile, which will continue to provide coverage for Boost Mobile customers as DISH builds out its own network. You’ll want to keep these factors in mind when unlocking your phone.
Since February 1, 2016, most of U.S. Cellular’s 4G LTE devices are sold unlocked. Those sold before that date can potentially be updated through an over-the-air update, so make sure your device is up to date before contacting U.S. Cellular about unlocking. If that doesn’t apply to your device, or if you have a 3G or 1X device, then you’ll need an unlock code from U.S. Cellular’s customer service line on 611 (from a U.S. Cellular device) or 888-944-9400 on another device.
Like other carriers, U.S. Cellular’s unlocking procedure is fully in-line with CITA’s guidelines on unlocking its devices, and will unlock phones and tablets, as long as they adhere to the following criteria:
- It must be a device from U.S. Cellular.
- The device in question must not have been lost, stolen, or obtained fraudulently.
- The device in question must have been fully paid for.
A specific range of popular phones from Apple and Samsung, whether prepaid or postpaid, are subject to a 120-day lock policy to deter theft and fraud. An account in good standing that meets those requirements can still request an early unlock. As is usual, deployed military personnel can also get their device unlocked earlier by presenting their deployment papers, as long as their account has no past-due balance.
U.S. Cellular warns some devices can’t be unlocked, either because of the age of the device or because it doesn’t have the technology to access other networks. If it sounds like your device might fall under that, you can contact U.S. Cellular on 611 (from a U.S. Cellular device) or 888-944-9400 on another device.
You might see this message on your computer or on your iPhone: “The SIM card inserted in this iPhone does not appear to be supported. Only compatible SIM cards from a supported carrier may be used to activate iPhone. Please insert the SIM card that came with your iPhone or visit a supported carrier store.” If you see that message, do this:
Since iOS 14, you can check your phone’s status. Go to Settings > General > About and scroll down to the section called Carrier Lock. This section should say No SIM Restrictions. If you don’t see that message, then your carrier probably hasn’t unlocked your phone yet. Contact your carrier immediately to find out what is going on. This should be enough to get your iPhone properly unlocked, but if you keep having difficulties, you may have to restore your iPhone to factory settings and reboot from a backup.
There are, of course, folks who have prepaid and paid-in-full devices. Unlocking these is, for the most part, relatively straightforward. While there was already a generalized unlocking policy, the Cellular Telephone Industries Association (CTIA) put forth a set of standardized unlocking policies for cell phones and tablets. The terms require carriers to unlock a phone paid in full, or a prepaid phone in service for a year, if a subscriber requests it. Cellular providers also have to alert subscribers when their handsets are eligible for an unlock. Finally, carriers must unlock phones for U.S. military personnel upon request.
Sprint, , Metro by T-Mobile, U.S. Cellular, and have all complied, and policies were already in line with the terms. Unlocking your phone doesn’t mean you can just take it to any other provider. While some modern phones are built for that kind of compatibility, others are still only designed for the network capabilities and features of a particular carrier. Most carriers offer an online Bring Your Own Phone tool to see if your unlocked device will work well on their network. You’ll just need to enter your device’s IMEI number to get an instant check.
If you encounter problems with an official carrier unlock, you can still opt for an IMEI unlock, which works identically to the official carrier unlock. There are plenty of IMEI unlock companies, but it’s best to go with trusted vendors like Express Unlocks (for iPhones), DoctorSIM, MobileUnlocked, UnlockBase, Cellphone Unlock, UnlockUnit, Unlock River, and Unlock Radar. Check review sites like Trustpilot before making a final decision or paying up. The price to unlock an iPhone varies based on your carrier. Lock breaker services support models from the newest iPhone series all the way back to the iPhone 4.
Most third-party unlocking services operate the same way. From their website, you pay varying amounts, usually under $100, for an email-based unlock code. Most require an upfront payment. Reputable unlocking services have customer support lines and deliver codes quickly.
- Express Unlocks (iPhones)
- Cellphone Unlock
- Unlock Radar
When all is said and done, the best option for most people is usually purchasing an unlocked phone rather than figuring out how to unlock one. First of all, it saves you the hassle of getting it unlocked. Secondly, you can choose whichever cell phone service you’d like, whether it’s prepaid, postpaid, or something in between. It’s a significant investment and may hurt a little if you already have a phone, but the freedom to switch carriers at any time is worth it.
Retailers like Amazon and Walmart sell unlocked phones, but often with high upfront costs. However, there are bargains out there if you know where to look, like Amazon’s Alexa Built-in unlocked phones, for example. Those phones are much more affordable but at the expense of having Amazon’s services pre-installed.
Every iPhone you buy from Apple — either online or from an Apple Store — is unlocked, except for specific carrier financing options. An unlocked iPhone lets you choose any carrier you want. To get started with a new carrier, do the following.
- Switch off your iPhone.
- Remove the current SIM card from your old carrier.
- Insert the new SIM card for your new carrier.
- Restart your phone.
- Upon restart, follow the on-screen instructions to set up your phone.
You can also buy a SIM-free iPhone, which means your iPhone does not come with a carrier SIM card, which frees you to use a SIM card from any compatible carrier. Of course, you will have to pay for your new phone upfront and in full.
If you can’t pay in full, consider Apple’s iPhone Upgrade Program, where you get an unlocked iPhone in much the same manner as the SIM-free option — though it does require a credit check. Not only do you avoid the upfront cost, but you also get to pay in monthly installments and are eligible for an upgrade after 12 payments. The program includes the AppleCare+ protection program alongside a $4.17 per month add-on for AppleCare+ with Theft and Loss protection.
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