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Select your ideal iD Mobile plan from trusted retailers. Filter by data, price and contract length to find your perfect match.
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About iD Mobile
iD Mobile is a SIM-only network owned by Currys that runs on Three's network, so coverage and 5G match Three where you live. It is known for data rollover, capped contracts and flexible terms, with both short 1-month plans and longer options. Plans start from £6.00 a month. Compare the live iD Mobile deals below.
Quick facts
- Runs on Three's network
- Owned by Currys
- Unused data rolls over into the next month
- Capped contracts stop you being charged above your plan
- Flexible 1-month plans alongside longer contracts, plus eSIM
What network does iD Mobile use?
iD Mobile uses Three's network for calls, texts and data, so the signal you get matches Three in your area. Where Three has 5G, iD Mobile can offer it too. Because coverage is the thing that makes or breaks a SIM, check that Three has solid signal at home and at work before you commit.
iD Mobile plan types explained
iD Mobile keeps the choice simple. Short 1-month plans renew each month and give you the freedom to adjust or move on without a long tie-in. Longer contracts are there if you would rather lock in a deal for a fixed period. eSIM is supported on compatible handsets, so you can get going without waiting for a physical SIM to arrive. The live deals above show what is currently on offer and how long each plan runs.
Perks and features
The standout feature is data rollover: anything you do not use in a month carries forward, so a quiet month is not wasted allowance. Contracts are capped, which means you will not be billed above your plan if you go over, giving you a predictable monthly cost. Add eSIM support and the short-term plans, and iD Mobile is built around keeping things flexible and free of surprises.
Who iD Mobile suits
iD Mobile suits anyone who wants Three coverage with the reassurance of a capped bill and rolled-over data. The 1-month plans are handy if your usage swings about or you do not want a long commitment, while the longer contracts work if you prefer to settle on one deal. It is a sensible pick for people who like knowing exactly what they will pay each month.
iD Mobile vs other Three networks
iD Mobile, Smarty and Three all use Three's network, so coverage is much the same across the three. They split on terms and extras: iD Mobile leans on data rollover and capped contracts, Smarty sticks to 30-day rolling plans only, and Three is the network itself with its own rewards. Weigh them up on price and the features you will actually use.
Pros
- Runs on Three's network
- Data rollover means unused allowance is not wasted
- Capped contracts keep your bill predictable
- Flexible 1-month plans plus eSIM support
Cons
- Coverage depends on Three, which varies by area
- Allowances and plan lengths change, so check the live deals
- Longer contracts may involve a credit check
Our verdict
iD Mobile is a solid choice if you want Three coverage with a capped bill and rolled-over data, and the 1-month plans give you room to change your mind.
Get your iD Mobile deal in 3 steps
Get your PAC code
Keep your current number by texting 'PAC' to 65075. It's free and takes minutes.
Complete your order
Finish your application with iD Mobile. Your new SIM will be delivered and your number transferred automatically.
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Eco impact
Our impact grows with you
Every successful switch through Switchity plants 2 trees through our verified reforestation partner, Ecologi. Our switchers have already captured over 5,240 kg of CO₂ and released nearly 26,986 kg of oxygen annually.
262 / 1000 trees26% to goal
2
Trees per switch
5,240+ kg
CO₂ captured
£25,000+
Customer savings
iD Mobile SIM-only deals: FAQs
Ready to switch?
Pick your iD Mobile SIM-only plan from the comparison above, or browse every UK network we cover.
See all SIM-only dealsOur community impact
Every switch through Switchity supports reforestation and saves our community money on their broadband.
262
Trees grown together
£25,000
Saved by community
£250
Typical yearly saving
738
Trees to go to goal
Written by Claudia Constantin, Co-Founder & Managing EditorPublished