Phones are a constant part of our lives, and making sure they have a strong internet connection is important. Everyone has a carrier they use, but sometimes, that connection may not be as reliable as we would hope. Even if they are one ofthe best phone carriers, that doesn’t mean they have the best coverage where you live. If you want to change phone plans, find out if your phone is compatible with the network you’re considering or if you need to get a new phone.

How to set up a SIM transfer PIN on every carrier

Protect yourself with a SIM transfer PIN

What are carrier-locked phones?

Carrier-locked phones are devices that can only work on a specific network like AT&T, Verizon, or T-Mobile. If you purchased your phone through a carrier, it may be unlocked. There are a few reasons carriers lock phones to their networks:

This is, by no means, an exhaustive list, and carriers change their requirements from time to time. Your best bet is to check your contract to see exactly what’s required for a device unlock.

sony-xperia-pro-i-sim

Being unlocked doesn’t guarantee that your phone will be compatible with any network, but it can be used on any network with which its compatible. There are ways to unlock a phone by removing the carrier lock. However, it varies by carrier and usually involves being with the carrier for a certain amount of time or paying off your phone. Now that we know what having a locked vs. unlocked phone means, let’s look at how to check what your phone is.

Use a SIM card to check if your phone is unlocked

The most foolproof way to determine if your phone is carrier locked is by trying a SIM card from a carrier that uses a different network. Many carriers have free trials where you may order a SIM to try this out.

If you may successfully send a text or make a call, your phone is unlocked. If you can’t make a call or send a text, then your phone is likely carrier locked. You may also see a message saying, “SIM card not supported,” which means the phone is not unlocked.

A SIM card on top of a SIM card tray taken out of a Motorola G Stylus 5G on top of a brown box with the Motolora logo

Check your phone’s Settings app

If you don’t want to swap out your SIM card, use the Settings app to see if your phone is unlocked. The steps are different for Android phones and iPhones, so let’s start with Android phones.

If you see a list of carriers pop up when your phone searches for networks, your phone is unlocked. If you only see the name of your current carrier, your phone is carrier locked.

The Samsung Settings app with a red arrow pointing to the Connections section

Check your iPhone settings to see if your device is locked

If you have an iPhone, follow these steps:

If you see “No SIM restrictions,” your phone is unlocked. If you see something else in that section, your phone is carrier locked.

Use your phone’s IMEI to see if it’s locked

Each phone has a unique identifier number called an IMEI for each available SIM slot. you may use this number to see if your phone is unlocked.

Any of these sites will tell you if your phone is unlocked or compatible with their network.

The Connections section in the Samsung Settings app with a red arrow pointing to the Mobile Networks option

Contact your carrier if you’re still not sure

Contact your current carrier if you don’t want to do these methods. Call, chat, or email them and ask their customer service if your phone is unlocked. They should be able to tell you.

Unlock the possibilities

Switching your carrier can help fix network issues or save you money. To make the switch, check if your current phone is carrier locked or not to see if you should take advantage of free phone deals with your new carrier. If you decide to make the switch, you canactivate an eSIMinstead of a traditional SIM to switch immediately.

Mobile networks settings on a Samsung phone with a red arrow pointing to the Network operators option