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To unlock a phone or Mobile Broadband device from Three to use it with a SIM from another network, you’ll need to fill in the form below.

Your first name, exactly as it appears on your bill.
Please enter your first name.
Please enter your first name.
Your last name, exactly as it appears on your bill.
Please enter your last name.
Please enter your last name.
We ask this so we know you're the account owner.
Please select your date of birth.
Please select your date of birth.
Your postcode, exactly as it appears on your bill. We ask this to make sure you're the account owner.
Please enter a valid UK postcode.
Please enter a valid UK postcode.
This doesn’t look like a working email address. Make sure you include the @ in the middle and the .domain at the end.
This doesn’t look like a working email address. Make sure you include the @ in the middle and the .domain at the end.
Please make sure you've entered a valid email address that matches the one above.
Please make sure you've entered a valid email address that matches the one above.
Please enter your existing number in full, without any spaces.
Please make sure you've entered your existing phone or Mobile Broadband number. This should start with 07 and contain no spaces.
Please make sure you've entered your existing phone or Mobile Broadband number. This should start with 07 and contain no spaces.
If we need to call you, and can't get hold of you on your Three number, we'll try this.
Please enter an alternative landline or mobile number without spaces.
Please enter an alternative landline or mobile number without spaces.
This is the name of the company that made your device. For example, if you have an iPhone, the device manufacturer is Apple.
You can find your IMEI by entering *#06# into your phone's call screen, in your tablet's settings or printed inside your dongle or MiFi.
Please enter your IMEI number. This should be 15 digits and have no spaces.
Please enter your IMEI number. This should be 15 digits and have no spaces.

Submit