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UKFC · Contract Change Centre
Contract Change Centre · Mobile / SIM

Mobile / SIM price rise explainer

Mobile and SIM-only contracts can include an annual mid-contract price rise. A small monthly increase can still add up across a 12 or 24 month term — this shows the real total.

Runs locally in your browser. No data leaves this page. Not advice. Not a live feed.

About mobile / sim price rises

Mobile and SIM-only contracts can include an annual mid-contract price rise. A small monthly increase can still add up across a 12 or 24 month term — this shows the real total.

What numbers you need first
  • Your current monthly mobile/SIM price
  • The monthly increase from the provider's notice (in pounds)
  • Months remaining on your contract
  • Any one-off fee (often £0)

Mobile / SIM price rise — what it really costs

The same tested calculator, with the figures you have to hand.

This calculator runs locally in your browser. UKFC does not collect or store these numbers. Nothing is sent over the network.
£
What you pay per month right now.
£
The pounds-and-pence rise per month from your provider's notice.
Months left before your contract ends.
£
Leave as 0 if none.

What this works out to

New monthly price£0.00
Extra per month£0.00
Extra over remaining contract£0.00
Estimated total remaining cost£0.00

What the calculator means here. It shows what the rise you enter does to your monthly price and your total cost to the end of the term.
What it does not mean. It is not a tariff comparison, not advice, and not a switching prompt.
What to verify with your provider
  • The exact rise amount and when it takes effect
  • Whether you are on a handset-plus-airtime plan where parts rise differently
  • Your minimum-term end date and notice period
  • Whether the rise repeats annually for the rest of the term

What UKFC cannot tell you: UKFC cannot see your tariff, your handset balance, or your contract dates. Your provider is the only source for your actual figures.

Safe next steps
  • Note the exact rise and effective date from the notice
  • Check whether airtime and handset elements rise separately
  • Confirm your minimum-term end date and notice period
  • Keep your own copy of the notice

Prepare a call script → · Full checklist →

Correction route

Spotted something wrong?

Email hello@ukfeecomparison.co.uk. We can correct public page wording or calculator logic, and we log confirmed corrections openly with evidence and a date. We cannot access your account and are not contacting your provider for you.

Commercial integrity

Trust before commission

No affiliate links currently live. No paid ranking, ever. No commission-led sorting. No "best for you" and no "switch now" — just the numbers, so you can decide.

Privacy. No accounts, no login, no email capture, no cookies, no tracking. No personal data, postcode, address, income or location is collected. The tools run locally in your browser and never send your figures anywhere.
How fresh is this? Not a live or automated feed. Public figures are updated only after human verification. The calculator works on the numbers you enter — it makes no live-price claim. This is not advice.