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How to activate your Classic SIM

A guide on how to activate a Classic SIM for the first time

Updated over 2 weeks ago

Ready to get your new SIM up and running? Here's a step-by-step guide to help you activate it quickly. Whether you're transferring your number or getting a new one.

📱 Get started in the Honest Mobile app

Before you begin, make sure you've downloaded the Honest app.
👉 Download the Honest app

Then follow these steps:

  • Open the Honest app

  • Sign up or log in using the same email you used to order your SIM

  • Tap on the SIM you want to activate

  • Enter the last 4 numbers on the back of your SIM (If you're using an eSIM, this info will be in your signup email)


🔁 Transfer your number or choose a new one

After entering your SIM details, you'll be asked to choose between:

Option 1: Transfer your number

  • Tap Transfer your number

  • Have your PAC code ready (you’ll get this from your old provider)

  • Enter the PAC code in the app when prompted

Option 2: Choose a new number

  • Tap Choose a new number

  • Follow the on-screen steps to confirm


⚙️ Final setup steps

Before you finish the activation flow, you’ll be able to:

  • Confirm or change your plan

  • Enable or disable roaming outside the UK and EU

  • Set a bill cap to avoid unexpected charges

  • Double-check your details

  • Tap Activate SIM to finish

Once done, insert your SIM (if it's a physical one) and you're activation will start.


🤩 Helpful tips and extra info

  • Activations can take up to an hour
    Grab a cuppa while we get everything sorted

  • Check your APN settings
    If your data isn’t working, your phone settings might need adjusting — reach out if you need help

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