Introduction

Switch to iD Mobile today.

Trying to cut down on monthly phone bills without giving up decent data or coverage? Then iD Mobile SIM only deals might be exactly what's needed. Starting from just £6 a month — with unlimited minutes and texts included — these plans are turning heads across the UK. It is hard to ignore a deal that offers so much for such a low monthly cost. Whether on a tight budget or just fed up paying over the odds, iD Mobile SIM only deals are genuinely worth a look.

What Are iD Mobile SIM Only Deals — And Why Are They So Popular?

A SIM only deal means getting a SIM card with a monthly allowance of data, minutes, and texts — no new handset attached. So if there's already a phone that works perfectly fine, there's absolutely no reason to pay for another one. iD Mobile has built its reputation on this exact idea: 30-day rolling contracts — Maximum flexibility, with the option to review or change your plan each month, subject to iD Mobile's terms. The plans start at £6/month and scale up depending on how much data is needed. Simple. Refreshingly so.

Flexible Contract Lengths to Suit Every Lifestyle

One thing that really stands out with iD Mobile SIM only contracts is the variety of contract lengths on offer. Not everyone wants to be locked in for two years — and that's totally fair.

1. 30-day rolling contracts — Maximum flexibility. Change or cancel with just 30 days' notice. Perfect for people who like to keep their options open.
2. 12-month contracts — A solid middle ground. Slightly more data for the same price, with the reassurance of a short-to-medium commitment.
3. 24-month contracts — The best value per pound. Longer commitment, but the fixed-price SIM plans mean no annual price hikes — ever.

No pressure and no sudden bill shocks. Just pick what works.

No Annual Price Rises — A Feature Worth Talking About

Here's something that most UK networks quietly skip past: annual price increases. Many providers bump up bills every April, sometimes by a significant percentage. Selected iD Mobile SIM only plans offer fixed monthly pricing for the duration of the contract, subject to the plan terms. That 24-month plan at £7/month? It'll still be £7/month in month 24. For anyone tired of opening their bill to an unwelcome surprise, this is a genuinely big deal.

Summer 2026 Offer: 75% Off for Up to 6 Months

Right now — and this is honestly great timing — iD Mobile is running a summer promotion that's hard to beat anywhere in the UK. Some selected plans are available at 75% off for up to 6 months. That means:

1. 110GB data on a 24-month plan for just £2.50/month (rising to £10/month after the offer period)
2. 150GB for £3.00/month on a 24-month plan
3. 300GB for £3.50/month on a 24-month plan
4. Unlimited data on a 12-month plan for just £4.00/month

Numbers like that are almost funny — in the best possible way. This is a seasonal promotion, so it won't hang around forever.

Key Features Included With Every iD Mobile SIM Plan

Every iD Mobile SIM only plan comes stacked with features that usually cost extra elsewhere. Here's what's included as standard:

1. Data Rollover — Unused data rolls over to the next month automatically, so nothing goes to waste.
2. Bill Capping — A built-in limit on out-of-plan charges, so there's never a horrifying bill at the end of the month.
3. Roam Free in 50+ Destinations — More roaming destinations than any other UK network. That's not a small thing for anyone who travels.
4. 5G Access — Included on all plans at no extra cost. If the device supports 5G and there's coverage nearby, it's ready to go.
5. iD Perks — Exclusive savings and rewards with top brands, making the monthly fee go even further.
6. Wi-Fi Calling — Stay connected even in areas with weak signal, as long as there's Wi-Fi.

iD Mobile vs Major Networks — The Savings Are Real

According to iD Mobile's own data, iD Mobile states that customers can save compared with selected major-network SIM only plans; savings will vary by tariff and usage — Vodafone, O2, EE, and Three. And on handset contracts, that figure jumps to around £350 per year. The network was cheaper for 100% of like-for-like SIM only plan comparisons made between November 2025 and February 2026. That's a remarkable track record, and it's backed by multiple awards — iD Mobile has received industry recognition for value and data offerings. Use the exact official award titles and dates before publication.

e-SIM Support — Modern Connectivity, No Plastic Required

For anyone with a compatible device, iD Mobile now offers e-SIM on all plans. No physical card to wait for and no worrying about losing it. Just scan a QR code and get connected. It's also safer if a phone gets lost or stolen — the eSIM can't be physically removed. To check compatibility, simply dial *#06# — if an EID number appears, the device supports eSIM.

How to Switch to iD Mobile Without Losing a Number

Switching networks sounds like a faff. It really isn't. Just text PAC to 65075 from the old SIM. The current network will send the PAC code back. Enter it when signing up for an iD Mobile SIM only plan, and the number moves over the next working day (if received before 5:30 pm Monday–Friday). No need to call anyone. No long hold music. No hassle.

Final Thoughts: Are iD Mobile SIM Only Deals the Cheapest in the UK Right Now?

Short answer? Quite possibly, yes. With plans from just £6/month, a summer sale bringing some tariffs down to £2.50/month, no annual price rises, unlimited minutes and texts across the board, and features like data rollover and roaming in 50+ destinations built in — it's genuinely difficult to find a better deal elsewhere. iD Mobile SIM only deals aren't just affordable. They're smart value, backed by an award-winning network that's been trusted by Currys, one of the UK's biggest tech retailers. Visit idmobile.co.uk to explore the full range of iD Mobile SIM only deals available right now.

Switch to iD Mobile today.



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FAQs

Q1. How much do iD Mobile SIM only deals cost per month?
iD Mobile SIM only deals start from just £6/month with unlimited minutes and texts included — and even lower during promotional periods.

Q2. Do iD Mobile SIM only plans include annual price rises?
No — iD Mobile's fixed-price SIM plans lock in the monthly cost for the full contract length, so the bill never unexpectedly increases.

Q3. Can an existing number be kept when switching to iD Mobile?
Yes — simply text PAC to 65075, receive a code from the current network, and the number transfers to iD Mobile by the next working day.