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Mobile switching guide

Choose your next SIM.
Keep your number.

Compare SIM-only plans without uploading a bill, finding your address or getting a PAC first. Choose your data allowance on Taupia, review the deal, then complete your order with the provider.

Compare SIM-only plans
  • No PAC needed to compare
  • Check coverage and contract costs
  • Provider checkout required
The quick guide

Who does what

  • Compare SIM plans

    On Taupia

  • Place the order

    Provider checkout

  • Supply your PAC and activate the SIM

    Follow provider instructions

  • Check the transfer and final bill

    After switching

Step by step

From comparison to your new SIM

Comparing plans does not place an order. Review the provider's terms and complete their checkout when you are ready.

  • Your action
  • Provider step
  • Check complete
  1. YOUBefore ordering

    Choose the data you need

    Tap to view details

    Start Taupia's SIM comparison with your monthly data allowance. Your current provider, payment and contract end date are optional; adding them helps you compare against your current plan.

    Answer the UK address-history question so available plans can reflect provider eligibility requirements. You do not need to enter your full address to see SIM deals.

  2. YOUBefore ordering

    Check the deal and complete provider checkout

    Tap to view details

    Review monthly charges, scheduled price changes, upfront costs and the minimum term. Check network coverage where you use your phone.

    Taupia opens the provider's checkout. Complete their order and any eligibility checks there. Getting a checkout link alone does not mean your switch has been ordered.

  3. YOUWith your provider

    Arrange your number transfer

    Tap to view details

    Supply your PAC to the new provider if you want to keep your number. Agree the transfer date and follow their SIM or eSIM activation instructions.

    Keep your order confirmation and your provider's contact details.

  4. PROVIDERAgreed switch date

    Your number moves to the new network

    Tap to view details

    The one-working-day switching rule applies to the provider transfer, not the time from comparing a plan to receiving and activating a SIM. Delivery and activation instructions come from your new provider.

  5. CHECKAfter switching

    Check service and your final bill

    Try calls, texts and mobile data. Review your old provider's final bill, including any outstanding charges or device payments. Keep evidence if a charge differs from what you were told.

When you need a PAC

Text PAC to 65075 to request a code for keeping your number. Give it to your new provider before it expires, within 30 days.

You can compare first. Providers usually let you supply the code during signup or afterwards.

For a family account with several numbers, request switching codes through your provider's website or by phone.

Switch day

Check the handover

Use the date and instructions your new provider confirms.

  • 01

    Keep both SIMs available

    Follow the activation instructions for your physical SIM or eSIM.

  • 02

    Test your service

    Check incoming and outgoing calls, texts and mobile data after the transfer.

  • 03

    Keep the confirmation

    Save the promised date and any messages about delays.

  • 04

    Report a problem

    Contact the new provider if the transfer misses its agreed date or service fails.

Your phone

Will your phone work?

Check your handset before choosing a plan.

Compatibility and coverage

Confirm that your handset supports the SIM type you are ordering. For eSIM, check the exact phone model with the new network.

Check coverage at home, work and other places you regularly use your phone. A plan's data allowance cannot tell you how good reception will be there.

Using an older handset? Ask the current network whether it needs unlocking before using another network's SIM.

Your contract

Check what leaving costs

Text INFO to 85075 to check your contract status before deciding.

  • Check the bill

    Minimum term ended

    Review any outstanding usage or device balance as well as the service price.

  • Check first

    Still in the minimum term

    An early termination charge may make switching more expensive. Ask for the amount before ordering.

  • Compare terms

    Rolling SIM-only plan

    Check the cancellation process and the next plan's minimum term, coverage and full cost.

Use the actual leaving charge

The switching-code response should include early termination information. Check unclear charges with the current provider; a missing figure does not prove the final bill will be zero.

Compare the new plan's total cost plus any leaving charge against keeping your current plan. Keep device repayments separate from the airtime comparison.

Before you commit: Save the quote and the contract summary so you can check the charges later.

Common questions

Before you switch

The next step depends on whether you are comparing, ordering or transferring your number.

Do I need a PAC before comparing SIM deals?

No. Choose a plan first, then give your new provider the PAC when arranging your number transfer.

Does opening a provider checkout complete my switch?

No. Complete the order and any checks with the provider. Keep their confirmation and follow their activation instructions.

What if I want a new number?

Request a STAC by texting STAC to 75075, then give it to your new provider to arrange the switch without keeping the old number.

Can I compare without a bill or an address?

Yes. Taupia's SIM comparison starts with your data needs and UK address-history eligibility. The provider collects the details needed for an order at checkout.

Is the cheapest monthly price always the lowest cost?

No. Include upfront charges, scheduled price changes, minimum term and any cost of leaving the old plan. Check coverage and allowances too.

Sources: Ofcom: switching mobile phone provider (read 5 November 2026)

Find a SIM for the data you use

Compare without a bill or PAC code, then finish your order with the provider.