What Does "Carrier Unlocked" Mean for Your iPhone's Value?

When selling your iPhone, one of the first questions a buyer will ask is whether it's unlocked. Here's what that means and why it matters.

Carrier Lock vs Unlocked

When you buy an iPhone on a payment plan through AT&T, Verizon, T-Mobile, or any carrier, it's often "locked" to that carrier. A locked iPhone will only activate and work on that specific carrier's network. If you put a different carrier's SIM in, it won't work.

An "unlocked" iPhone works on any carrier — you can pop in any SIM card from any country and it will work.

How to Check if Your iPhone Is Unlocked

1. Go to Settings → General → About
2. Scroll down to Carrier Lock
3. If it says "No SIM Restrictions" — your phone is unlocked
4. If it says "[Carrier] SIM Lock" — it's locked

How to Unlock Your iPhone

Contact your carrier and request an unlock. Requirements typically include:

• The phone must be paid off (no remaining balance on the payment plan)
• You must have been a customer for a minimum period (usually 60 days)
• No reported lost/stolen status

AT&T, Verizon, and T-Mobile all offer free unlocks once eligibility is met. It usually takes 24–72 hours to process.

How Much Does Carrier Lock Affect Value?

The $30 gap is consistent across most models. It's worth unlocking your phone before selling if your carrier will do it — it takes 1–3 days and costs nothing.