How to Cancel a Mobile Phone Contract

Whether you are switching provider, unhappy with service, or simply want to cut costs, cancelling a mobile phone contract in the UK is straightforward once you understand the rules. This guide covers your cancellation rights, the fees involved, and how to avoid unnecessary charges.

Your Cancellation Rights

The 14-Day Cooling-Off Period

If you signed up to a new mobile contract online, by phone, or through a doorstep sale, you have 14 days to cancel for any reason. This is the cooling-off period under the Consumer Contracts (Information, Cancellation and Additional Charges) Regulations 2013.

Key rules:

• The 14 days start the day after you receive confirmation of the contract (not the day you sign up)
• You do not need to give a reason
• You must return the handset if one was provided
• The provider must refund any payments within 14 days of receiving the returned handset
• You can be charged for any usage during the cooling-off period (calls, texts, data)

How to Cancel During the Cooling-Off Period

1. Contact the provider in writing (email or letter)
2. State that you are cancelling under the 14-day cooling-off period
3. Provide your account number and contract details
4. Arrange to return the handset
5. Keep proof of return (tracking number, receipt)

Template email:

Subject: Cancellation of Contract — 14-Day Cooling-Off Period

Dear [Provider],

I wish to cancel my mobile phone contract under the 14-day cooling-off period (Consumer Contracts Regulations 2013).

My account number is [number]. The contract was confirmed on [date].

I will return the handset using [tracked delivery]. Please confirm the return address and process my cancellation.

Please ensure any direct debit is cancelled and provide a final bill.

[Your name]

Early Termination Fees

If you cancel outside the 14-day cooling-off period, you will typically face an early termination fee (ETF). This is the main cost most people want to avoid.

How the Fee Is Calculated

Most providers calculate the ETF as:

Remaining months x monthly contract cost = total ETF

For example:

Some providers reduce the ETF over time. Check your contract terms — many providers have a formula that decreases the fee as you near the end of the contract.

Handset Payments

If your contract includes a handset, there may be a separate outstanding amount for the device. Some providers split the contract into:

• Airtime plan (calls, texts, data) — fixed monthly cost
• Handset plan (device cost) — may be paid upfront or spread over the contract

If you cancel early, you may need to pay the remaining balance on the handset separately. Check your contract to understand how this is structured.

When You Can Cancel for Free

There are several situations where you can cancel your contract without paying an early termination fee.

1. Price Increases Mid-Contract

If your provider increases the price during your contract and this increase is above the rate of inflation (CPI), you can cancel without penalty.

Ofcom rules (effective from January 2025):

• Providers must allow you to leave penalty-free if they raise prices above CPI + a specified percentage (typically 3.9%)
• The increase must be mid-contract — not at renewal
• You must be notified of the increase and given the option to cancel

What to do:

• Check your contract for the annual price increase clause
• If the increase exceeds the allowed threshold, contact the provider and state you are cancelling due to a mid-contract price increase
• Request a PAC code if you want to keep your number

2. Poor Service

If your provider consistently fails to deliver adequate service, you may have grounds to cancel without penalty. Ofcom requires providers to meet minimum quality standards.

Examples of poor service:

• Consistent coverage issues in your area
• Slow speeds significantly below what was advertised
• Excessive network downtime
• Failure to resolve complaints

How to proceed:

1. Document the issues with dates, times, and screenshots
2. Contact the provider and raise a formal complaint
3. Follow the provider’s complaints process
4. Request a deadlock letter if unresolved after 8 weeks
5. Escalate to the relevant ombudsman or Ofcom

3. Faulty Handset

If your handset develops a fault, you have rights under the Consumer Rights Act 2015:

• Within 30 days: Reject the handset for a full refund
• Within 6 months: The provider must prove the fault was not there at purchase
• After 6 months: You must prove the fault was there at purchase

If the handset is faulty and cannot be repaired, you can cancel the entire contract without penalty.

4. Death of the Contract Holder

Most providers will cancel a contract without penalty if the contract holder dies. You will need to provide a death certificate and contact the provider’s bereavement team.

5. Provider Breach of Contract

If the provider fails to meet its contractual obligations (e.g. wrong handset, missing promised features, billing errors), you may cancel without penalty. You must give the provider a reasonable chance to fix the issue first.

How to Cancel Your Contract

Step 1: Check Your Contract

Before cancelling, check:

• Your contract end date
• Early termination fee amount
• Handset payment terms
• Notice period required (usually 30 days)

Step 2: Contact Your Provider

You can cancel by:

• Phone: Call customer services (check your provider’s website for the number)
• Letter: Write to the provider’s complaints or cancellations department
• Online: Some providers allow cancellation through your online account

Always cancel in writing — it creates a record of your request and the date you gave notice.

Step 3: Give 30 Days’ Notice

Most providers require 30 days’ notice to cancel. This means:

• Your contract will end 30 days after you give notice
• You will be billed for those 30 days
• The early termination fee is calculated from the end of the notice period

Step 4: Get a PAC Code (If You Want to Keep Your Number)

A PAC (Porting Authorisation Code) is a 9-digit code that lets you transfer your number to a new provider.

How to get a PAC:

• Text “PAC” to 65075 — your provider must send you the code within 1 minute (free of charge)
• Call your provider and request a PAC
• Use your online account — some providers offer PAC codes online

Rules:

• A PAC is valid for 30 days
• You must give the PAC to your new provider to transfer your number
• Your old contract ends when the number is transferred
• You should not be charged for the remaining contract balance if you transfer with a PAC

Step 5: Return the Handset

If your contract included a handset:

• Return it in the original packaging (if possible)
• Include all accessories
• Use tracked delivery
• Keep proof of postage

The provider may deduct value for damage beyond normal wear and tear.

Step 6: Check Your Final Bill

After cancellation:

• Check your final bill for any unexpected charges
• Ensure the early termination fee is correct
• Verify the billing period covers the correct dates
• Dispute any charges you believe are incorrect

The Deadlock Letter Process

If you have a complaint that your provider cannot resolve, you can request a deadlock letter.

What It Is

A deadlock letter is a formal statement from the provider confirming that it cannot resolve your complaint and you should escalate to an independent body.

How to Get One

1. Follow the provider’s complaints process
2. After 8 weeks without resolution, you can request a deadlock letter
3. If the provider refuses, you can escalate to the relevant ombudsman anyway

What to Do With It

Once you have a deadlock letter, you can escalate to:

• ** CISAS** — for disputes with mobile providers (if the provider is a member)
• Ombudsman Services — another ADR scheme
• Ofcom — for regulatory complaints (they do not resolve individual disputes but can investigate patterns of poor practice)

Ofcom Rules on Contract Cancellation

Ofcom regulates the UK mobile market and sets rules that protect consumers.

Key Ofcom Rules

• Price increases: Providers must allow penalty-free exit if they raise prices above CPI + a set percentage mid-contract
• Clear pricing: All charges must be clearly communicated before you sign up
• Minimum contract length: Contracts must be no longer than 24 months (Ofcom encouraged shorter contracts)
• PAC codes: Providers must make PAC codes available quickly (text “PAC” to 65075)
• Exit fees: Providers must clearly state any exit fees before you sign up
• Billing errors: Providers must correct billing errors promptly and refund overpayments

How to Complain to Ofcom

Ofcom does not resolve individual complaints but can investigate systemic issues:

1. Complete the complaint form at ofcom.org.uk
2. Provide details of your complaint and the provider’s response
3. Ofcom may investigate and take enforcement action if they find breaches

Switching Providers: The Process

When you switch to a new provider, the process is usually handled by the new provider.

How It Works

1. Get a PAC code from your old provider (text “PAC” to 65075)
2. Give the PAC to your new provider
3. Your number is transferred (usually within 1 business day)
4. Your old contract is cancelled automatically
5. You receive a final bill from your old provider

What to Check

• The transfer date aligns with your billing cycle
• Your old contract is cancelled and no further charges apply
• Any outstanding handset balance is correctly reflected
• Your number has transferred successfully

Common Traps to Avoid

1. Forgetting about the handset balance — if your contract includes a handset, the outstanding device cost may be charged separately from the early termination fee
2. Not getting a PAC code — if you want to keep your number, always get a PAC before cancelling
3. Assuming the cooling-off period is longer — it is 14 days, not 30
4. Not checking the contract end date — if your contract is ending soon, it may be cheaper to wait than to cancel early
5. Accepting verbal promises — always get cancellation terms in writing
6. Not disputing incorrect charges — check your final bill carefully and dispute any errors within the billing cycle

Frequently Asked Questions

Can I cancel if my contract has ended? Yes, once your minimum contract period ends, you can cancel with 30 days’ notice without penalty.

Can I keep my number if I cancel without a PAC? No. If you cancel without a PAC, you lose your number. Always get a PAC first.

What if I cannot afford the early termination fee? Contact the provider and explain your situation. Some providers may offer a payment plan or reduce the fee. If you are experiencing financial hardship, contact Citizens Advice for support.

Can I cancel if I am on a SIM-only plan? Yes, the same rules apply. SIM-only plans typically have lower early termination fees.

What if my provider does not have a deadlock letter process? You can escalate to CISAS or Ombudsman Services after 8 weeks of complaint.

Can I cancel a business mobile contract? Business contracts are not covered by the same consumer protections. Check your contract terms for cancellation rights.

Summary

• The 14-day cooling-off period lets you cancel for any reason if you signed up online, by phone, or at your doorstep
• Early termination fees are typically remaining months x monthly cost — check your contract for the exact formula
• You can cancel for free if your provider increases prices mid-contract above CPI, if service is consistently poor, or if your handset is faulty
• Always get a PAC code (text “PAC” to 65075) to keep your number when switching
• Give 30 days’ notice and cancel in writing
• Use the deadlock letter process to escalate complaints after 8 weeks
• Ofcom rules protect you from unfair price increases and require clear exit fee information