If you have ever tried to pop a competitor’s SIM into a phone you bought from your carrier and watched it refuse to connect, you have run into a carrier lock. Locked phones are everywhere in the United States and Canada, and most buyers do not realise their device is restricted until they try to switch networks, travel abroad, or sell it. The good news: both countries have rules that make unlocking free once you qualify. This guide explains why phones get locked, whether buying a locked device actually saves you money, and the exact steps to get yours unlocked in the US and Canada.
What Is a Locked Phone?
A locked phone has a software restriction that ties it to a single carrier’s network. Drop in a SIM from another provider and you will either see a “SIM not supported” message or be prompted for an unlock code. The hardware is identical to its unlocked sibling, the lock is purely a software flag set by the carrier at the network level and, for newer iPhones, on Apple’s activation servers. Locks can be partial too. Some carriers in the US block use on rival domestic networks but allow roaming on foreign SIMs, others lock the device completely until paid off.
Why Carriers Lock Phones in the First Place
The lock exists for one main reason: subsidies. When a carrier sells you a flagship for $0 down on a 24 or 36 month payment plan, they are essentially loaning you the device. The lock protects that loan. Without it, a buyer could grab a $1,200 iPhone for nothing, immediately switch to a cheaper rival, and leave the original carrier holding the bill. Locks also reduce phone theft (a stolen locked device is much harder to resell) and let carriers offer steeper trade-in and promotional pricing because they know the customer is staying for the duration of the deal.
Are Locked Phones Actually Cheaper?
Sometimes, yes. Carrier promotions in both countries routinely knock $300 to $800 off a flagship’s sticker price in exchange for staying on a qualifying plan, usually paid back as monthly bill credits over 24 to 36 months. Buy unlocked at retail and you skip the strings, but you also skip the discount. The catch is that the savings only land if you stay the full term. Leave early and the remaining device balance becomes due immediately, often wiping out the savings entirely. A locked phone makes sense when your plan and carrier are already a fit. If you travel a lot, use prepaid SIMs, or expect to switch networks within two years, paying full price for an unlocked model is usually the better deal.
How to Unlock a Phone in the United States
The FCC requires all major US carriers to unlock eligible phones for free. The exact eligibility window varies by carrier, but the standard rule is that the device must be fully paid off and the account must be in good standing. T-Mobile, AT&T, and Verizon typically require at least 60 days of activation before they will process an unlock, and Verizon now ships most new phones unlocked out of the box.
- Confirm your phone is paid off and your account is current.
- Find your IMEI by dialling *#06# on the phone, or check Settings > General > About on iPhone, Settings > About Phone on Android.
- Contact your carrier. T-Mobile customers can dial 611 from the device, AT&T uses an online unlock portal at att.com/deviceunlock, and Verizon handles most cases automatically once the device is paid off.
- Provide your IMEI and account details. The carrier will either push the unlock to your device automatically (most iPhones) or send a code you enter after inserting a new SIM (most Android phones).
- Restart the phone, swap in the new SIM, and confirm the unlock worked.
Avoid third-party paid unlock services. Some are legitimate, but the market is full of scams, and using one can void your warranty or get the IMEI flagged as suspicious. Since carriers are legally required to do it for free once you qualify, there is rarely a good reason to pay.
How to Unlock a Phone in Canada
Canada’s rules are even more consumer friendly. Since December 2017, the CRTC has required every Canadian carrier to unlock devices on request, free of charge, with no minimum activation period and no requirement that the device be paid off. New phones sold by Canadian carriers must also ship unlocked from day one. If you have an older locked device on Rogers, Bell, Telus, or one of the regional brands, the process takes minutes.
- Dial *#06# to get the device’s IMEI.
- Call your carrier’s support line or use their self-serve unlock page (Rogers, Bell, and Telus all offer one).
- Provide the IMEI and confirm your account details. There is no fee.
- For iPhones the unlock is applied via Apple’s activation servers, usually within a few hours to a couple of days. Connect the phone to Wi-Fi and it will activate as unlocked next time it checks in.
- For most Android phones the carrier emails or texts an unlock code. Insert a SIM from another network and enter the code when prompted.
Quick Things Worth Knowing Before You Unlock
Unlocking does not affect your warranty, your software updates, or your ability to keep using the original carrier. It simply removes the network restriction. An unlocked phone is also worth meaningfully more on the resale market, often $50 to $150 more for a flagship, so if you plan to sell or trade in within a couple of years, unlocking before you list it pays for itself in minutes of phone calls. If you are buying second-hand, always check the IMEI on the carrier’s website before paying, a locked or blacklisted device can be effectively useless on a different network.
Bottom Line
Carrier locks made more sense in the era of two-year contracts and heavily subsidised handsets. With monthly bill credits and free unlocking now standard in both the US and Canada, the practical impact on most buyers is small, as long as you understand the trade. Take the discount if your plan and carrier are stable, pay retail for an unlocked model if flexibility matters, and unlock the phone the moment you are eligible. It costs nothing and gives you back full ownership of a device you already paid for.