Unlocked vs carrier phones in the US: what's the difference?
What unlocked means in the US, the current AT&T, Verizon and T-Mobile unlocking rules after Verizon's 2026 change, and how to check your phone.
An unlocked phone has no software that ties it to one carrier, so you can take it to any network it's compatible with. A carrier phone is locked to the company that sold it until you meet that company's conditions. Today that means: at AT&T, the phone is paid off and at least 60 days old; at Verizon, it's paid off (prepaid phones wait 365 days); at T-Mobile, it's paid off and has been active for 40 days. Verizon's rules changed in early 2026, so older advice about a 60-day automatic unlock at Verizon is out of date.
One thing unlocking doesn't do is make a phone work everywhere. We'll come back to that.
What "unlocked" means
The FCC's consumer guide to unlocking defines it narrowly: unlocking "refers only to disabling software that would prevent a consumer from attempting to activate a phone designed for one wireless provider's network on another wireless provider's network." The lock can apply to a physical SIM or an eSIM.
The FCC also gives a simple rule for shoppers: unless a phone is "specifically sold as 'unlocked' at the point of purchase, it is probably locked to a specific wireless provider's network." That holds whether you buy from a carrier, a retailer or a third party.
In the US you can buy unlocked phones directly from the makers. Apple, Google, Samsung, Motorola and Nothing all sell them on their own stores, and Google and Samsung also sell carrier versions of some models there.
The unlocking rules at each carrier today
| AT&T | Verizon | T-Mobile | |
|---|---|---|---|
| Postpaid phone | Bought 60+ days ago and paid in full | Unlocked when bought at full price or when financing is paid off | Active 40+ days on the line and paid in full |
| Prepaid phone | 12 months of paid service | 365 days of paid, active service | 365 days since activation, or over $100 in refills plus 14 days since purchase |
| Automatic? | Yes for eligible Apple, Samsung and Google phones | Yes | Yes, within two business days, if the phone supports remote unlock |
The details, from each carrier's own page:
AT&T. Its unlock page (last updated June 29, 2026) requires that the phone was bought more than 60 days ago, is paid in full, hasn't been reported lost or stolen, and that your account isn't past due. Eligible Apple, Samsung and Google devices "should unlock by itself." Prepaid phones need 12 months of paid AT&T service. People who aren't AT&T customers can still submit an unlock request for an eligible AT&T phone.
Verizon. Its device unlocking policy, effective February 18, 2026, says postpaid devices "will be unlocked automatically when purchased at full retail price or if the device financing agreement balance is paid in full." Prepaid devices stay locked "until the completion of 365 days of paid and active service," then unlock automatically.
T-Mobile. Its unlock policy, as posted in July 2026, requires a postpaid phone to have been active on T-Mobile for at least 40 days on the requesting line and to be paid in full. A prepaid phone needs 365 days since activation, or more than a hundred dollars in refills for each line plus more than 14 days since purchase. Once a phone qualifies, T-Mobile says it unlocks it automatically and remotely "within two business days" if the phone supports remote unlocking. Otherwise it sends the phone a notification with next steps.
What changed at Verizon
For years Verizon had to unlock phones 60 days after activation. That came from a 2007 FCC rule tied to some of Verizon's spectrum, and the FCC extended it to Tracfone prepaid phones when it approved Verizon's purchase of Tracfone in 2021.
On January 12, 2026, the FCC's Wireless Telecommunications Bureau granted Verizon a waiver of that rule, citing phone theft and trafficking. While the waiver is in effect, Verizon committed to follow the unlocking policies in the CTIA Consumer Code for Wireless Service, the industry code the other national carriers also follow. The order says the waiver lasts "until such time as the Commission decides on an appropriate industry-wide approach for the unlocking of handsets."
In practice, a phone financed through Verizon now stays locked until it's paid off, and a prepaid Verizon phone stays locked for a year.
Pros and cons
Buying unlocked
- You can switch carriers whenever you like, or use a local eSIM when you travel. Apple's travel eSIM page says an iPhone "cannot be locked to a carrier" if you want to use another carrier's plan abroad.
- You pay the full price, or use the maker's own financing.
- Carrier deals usually require buying the phone from that carrier. The FCC notes that locked phones "are often sold at a reduced price or as part of an installment plan."
Buying from a carrier
- Promotions and monthly payments can lower the upfront cost.
- The phone stays locked until you meet the conditions above, which can be years on a long payment plan.
Apple adds a twist. On October 15, 2026, Apple's US store charged $899 for the iPhone 17 when you activate it with AT&T, T-Mobile or Verizon, and $929 if you buy it unlocked without activating it. We break down that price in our iPhone 17 vs Pixel 11 comparison. Samsung's US store sells the Galaxy S26 in unlocked, Verizon and T-Mobile versions, which our Galaxy S26 overview covers.
How to check if your phone is unlocked
- iPhone. Apple's unlocking guide says to open Settings, tap General, then About. If "No SIM restrictions" appears next to Carrier Lock, the iPhone is unlocked. Apple can't unlock an iPhone for you: "Only your current carrier can unlock your iPhone."
- Samsung. For Samsung phones released after September 1, 2025, AT&T's page says to open Settings, tap Connections, then More connection settings, and look for Network lock status.
- Any phone on a carrier account. AT&T shows "Device unlocked" in the device info in your account, and T-Mobile lets you check unlock status in your T-Mobile account.
- Try another SIM. For phones with a SIM slot, AT&T suggests inserting a SIM from another carrier. A message that the SIM isn't compatible means the phone is still locked.
Unlocked doesn't mean compatible
The FCC's guide warns that "unlocking a phone designed for one network may not make the phone technologically compatible with another wireless provider's network." Verizon's policy says the same about its own phones: an unlocked Verizon device "may have limited functionality or may not work at all on another carrier's network."
This matters most for phones not sold by all three carriers. Nothing's US compatibility sheets for the Phone (3) and Phone (4a) Pro call Verizon support "limited" and say the phone must be manually added to Verizon's database before activation. That's why our midrange picks list the carriers each phone works with.
Common mistakes
Paying off a Verizon phone with a Verizon gift card. Verizon's policy says the unlock is then "delayed by 35 days."
Buying a used phone without checking. The FCC advises asking whether a new or used phone is locked before you buy. None of the three carriers will unlock a phone that has been reported lost or stolen.
Leaving a balance behind. AT&T wants your account to be current, and T-Mobile requires a zero balance if the phone is on a canceled account. Settle the bill and the phone payments before you switch.
Expecting Apple to unlock an iPhone. Apple says only your current carrier can do it.
