iCloud Lock (Activation Lock) — What It Is and How to Avoid It

Activation Lock (iCloud lock) is an Apple security feature: if "Find My" is turned on and the device is linked to someone else's Apple ID, a new owner cannot use it without the password.

Why It Matters

An iCloud-locked phone is completely unusable—you won't be able to activate it. When buying a used device, this is the very first thing you should check.

How to Check

• Ask the seller to completely erase the device: Settings → General → Transfer or Reset → Erase All Content.
• If it asks for a password during reset, it's still linked to someone's account. Do not buy it.
• If the "Activation Lock" screen appears during setup, the phone is locked.

At US MOBI, every iPhone is guaranteed iCloud-free—you can set it up on your own Apple ID with complete peace of mind.