Getting started with BT Mobile's SIM-only plans

BT Mobile combines the power of fast 4G with unlimited access to the UK’s largest wi-fi network. If you have BT Broadband at home, you can get an exclusive discount too.

Last updated: 7 January 2019 - 1.01pm

Step 1: Getting BT Mobile

BT Mobile's SIM-only plans let you keep your much-loved phone with all your photos, music and apps on it. To get started, go to Pick a plan that’s best for you and choose the right size SIM for your phone.

If you've joined BT Mobile with a handset plan, find out how to get started.

Once you've ordered, we'll send you a confirmation email with your order reference number.

We'll email you again when we've posted your SIM. We'll send it to you first class so it should be with you in 1-2 business days. It fits through the letterbox and you don't have to sign for it, so there's no need to wait in.

If you order before 5pm on a business day we’ll send out your SIM there and then.

Step 2: Your welcome pack

BT Mobile - activate me

You’ll get your welcome pack in 1-2 business days. It includes your SIM, plus a few tips to get you started.

Now activate your SIM at

[Read more: How to protect your Android smartphone]

Step 3: Activate your SIM

Activate your SIM

You can activate your SIM online in two steps. Check the ‘Things to know’ as you go through.

We’ll text you once the SIM is ready to go.

Step 4: Keeping your number

To keep your old number when you switch to BT Mobile, you’ll need to check your phone is unlocked and get a PAC code from your old provider.

Check our FAQs for more help on this >

Step 5: Manage your account

BT Mobile - My Allowances

Once you’re up and running, you can keep tabs on what you’ve used and set monthly spend caps so you don’t get surprise bills. Just log in at

Or you can download our BT Mobile app, for Android in the iPhone or Windows Phone, or text BTmob to 81192 and we'll send you the link.

BT Mobile app

Check out our mobile phone and SIM-only deals with discounts for BT Broadband customers

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