iD Mobile
iD Mobile phone deals
Compare iD Mobile phone contracts — uses Three's network, includes Data Rollover and EU roaming. Live monthly pricing across every iD Mobile handset.
iD Mobile
What Makes iD Mobile Stand Out?
Five features you will not find bundled together on most major networks.
Data Rollover on Every Plan
Unused data automatically carries into the following month. You never lose data you have already paid for, a genuinely useful feature for anyone whose usage varies month to month.
5G at No Extra Cost
5G is included on every iD Mobile plan with no premium tier or upgrade needed. Over 656 UK towns and cities covered, running on Three's 5G network, one of the UK's fastest.
Roaming in 50+ Countries
Use your UK data, calls and texts in 50+ worldwide destinations including all EU and EEA countries at no extra charge. Voted Best Network for Roaming by Trusted Reviews readers.
No Price Rises on SIM-Only
As of January 2026, eligible SIM-only plans carry a fixed-price guarantee, no annual CPI or RPI price rise. Rare in the UK mobile market and makes budget planning much easier.
Bill Capping Built In
Set a maximum monthly spend through the iD Mobile app. Your service pauses when you hit the cap, no surprise bills at the end of the month, even if you accidentally exceed your allowance.
Data Rollover: How It Works
At the end of each billing month, any data you have not used is automatically moved into your next month's allowance. There is no opt-in, no app needed, and no expiry, it just rolls over.
For example, if you have a 30GB plan and only use 18GB in October, you start November with 42GB available. This continues every month, building up a buffer you can draw on during heavier usage periods.
Data Rollover is included on every iD Mobile plan, both SIM-only and handset contracts. It is one of the most practical features in the UK mobile market and rarely offered at iD Mobile's price points.
Bill Capping: Stay in Control
- Set a maximum monthly spend through the iD Mobile app
- Service pauses automatically when you hit your cap
- Up to £5 extra buffer available for small overages
- Reset or adjust your cap at any time
- Available on all plans — no extra charge to activate
iD Mobile Plan Features at a Glance
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How to Compare iD Mobile Deals on Switch
Find your deal in under two minutes
Choose Handset or SIM-Only
Decide first whether you need a new phone or already have one. If you have a working handset, a SIM-only plan from iD Mobile (from £6/mo) is almost always the better value option, especially with the fixed-price guarantee.
Set Your Data Allowance
Most people use between 10GB and 30GB per month. With Data Rollover, choosing slightly more than you think you need is a safe move, unused data carries forward rather than being wasted.
Pick Contract Length
Rolling monthly plans (1 month) give maximum flexibility. 12 or 24-month fixed plans cost less per month. Switch shows total contract cost alongside the monthly rate so you can compare across lengths.
Click Through and Activate
Switch links directly to iD Mobile at the deal price shown, no mark-up. To keep your existing number, request a PAC from your current network (text PAC to 65075) and provide it at checkout. Transfer takes one working day.
Why compare iD Mobile with Switch
Up-to-date prices, honest filters, no-pressure switching: every plan we list is from a verified UK partner.
Verified prices
Every iD Mobile deal is sourced from a verified UK partner and refreshed daily, what you see is what you pay.
Switch in minutes
Most customers complete a switch in under ten minutes from comparison to confirmation — no phone calls required.
No hidden fees
We never charge a comparison fee. Our partners pay us a referral when you sign up, your price is the same either way.
Real choice
Compare every UK network and refurbished retailer in one place, flagship handsets, mid-range phones, no-upfront deals, all here.
How switching works
Switching is genuinely fast: most customers go from comparison to a confirmed plan in under ten minutes.
Pick your handset
Filter by storage, colour, contract length and upfront cost to find the iD Mobile deal that fits your budget.
Choose your network
Compare offers across every major UK network. Each row shows the full monthly cost, data allowance and any setup fee.
Sign up online
Click through to the retailer and complete the order in minutes, your handset usually ships within 1–2 working days.
Looking for the right iD Mobile deal?
iD Mobile handsets are sold across every UK network and several refurbished retailers, and the cheapest deal in the table above is rarely the one with the most expensive headline price. Filter by total cost (handset + 24 months of contract) to spot real value.
If you don't need the latest model, the Refurbished filter unlocks like-new handsets one or two generations old at 20–40% off, they come with a 12-month warranty either way.
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iD Mobile phone deals — questions
Whose network does iD Mobile use?
iD Mobile uses Three's 4G and 5G network — coverage matches Three's.