What carrier is my phone? 6 ways to check on iPhone and Android

“What carrier is my phone?” can mean three different things: which network you are on right now, which carrier the phone is locked to, and which carrier a phone number belongs to. They often differ, especially with used phones and cheaper carriers that run on Verizon, AT&T or T-Mobile. Here are six free ways to check, and which question each one answers.

Carrier vs carrier lock: why it matters

The carrier you use now is whatever SIM or eSIM is active. The carrier lock is a restriction set by the company that originally sold the phone, and it stays until that carrier removes it. An unlocked Verizon phone using a T-Mobile eSIM shows T-Mobile, but was originally from Verizon. If you are selling, buying used or switching, the lock matters more than the name on the screen.

1. Look at the status bar or Control Center

On iPhone, swipe down from the top-right corner to open Control Center. The carrier name appears at the top left. On most Android phones, the carrier name shows in the status bar or when you pull down the notification shade. This answers only one question: which network your current SIM or eSIM uses.

Budget carriers often show the host network’s name. A Visible or Straight Talk line may show Verizon, and a Mint line may show T-Mobile. See what an MVNO is for who uses which network.

2. Check iPhone settings

If the iPhone is locked, the screen does not always name the carrier. The carrier that sold it is almost always the one that locked it, so check the receipt, or try methods 5 and 6.

3. Check Android SIM status

4. Read the Samsung carrier code (CSC)

Samsung phones keep a code for the carrier they were built for, which is the best free clue to the original carrier on a used Galaxy.

The US model number helps too. Unlocked US Galaxy models usually end in U1, while carrier models end in U. You will find it on the same About phone screen. A carrier code does not prove the phone is still locked. See how to tell if your phone is unlocked.

5. Use the IMEI with a carrier checker

6. Check the box, receipt or SIM tray

The original box often has a carrier sticker or logo, and the receipt or order email names the seller. If a physical SIM card is inside, it is usually printed with the carrier’s name. For a used phone, ask the seller where it was bought. An honest seller will know.

If you bought an iPhone from Apple and paid in full without choosing a carrier to activate it with, it was sold unlocked. If you chose a carrier at checkout, or paid through a carrier installment plan, it may be tied to that carrier until paid off. Your Apple order history shows which option you picked. Prepaid phones sold at stores like Walmart or Target are usually locked to the prepaid brand on the box, often for 60 days to a year of paid service, depending on the brand.

What carrier is this phone number?

The area code does not tell you the carrier, because numbers can be moved between carriers. Free carrier lookup tools online check US porting records and usually return the current carrier. They can be wrong if the number moved recently, and they often show the host network for MVNO numbers. For your own number, the easiest answer is your latest bill or your carrier’s app.

Does the original carrier still matter?

Once a phone is unlocked, much less than people think. US iPhones are the same model whether they came from Apple, Verizon, AT&T or T-Mobile, so an unlocked one works on any of them. Recent Galaxy and Pixel phones sold in the US also support the main bands of all three networks, whichever carrier sold them.

It matters more for older or cheaper Android phones, which may lack bands another network relies on, and for phones from other countries. A Samsung built for Verizon may also keep Verizon’s apps and receive updates through Verizon until you reset it with a different SIM, which is normal and harmless.

Checking a used phone before you buy

What to do once you know

• Locked to a carrier? Ask that carrier to unlock it once it is paid off. See unlocking an iPhone from a carrier or unlocking a Samsung from a carrier.
• Buying a used phone? Also run a blacklist check. See how to check if a phone is stolen.
• Switching to a cheaper plan? See how to switch phone carriers.

Why the carrier name shows wrong or strange

• Roaming: near a border or in rural areas, your phone can show a partner network instead of your carrier.
• MVNOs: budget carriers often show the host network’s name.
• No SIM or SOS: if you see No SIM or SOS only, the phone is not connected to any carrier. It may be locked, the eSIM may be removed, or there may be no signal.
• Two lines: on dual SIM phones, each line has its own carrier.