iD Mobile SIM only offers Updated: 2026-09-28 12:45:41
iD Mobile offers great value SIM only and pay monthly packages.
iD Mobile has a reputation for value and flexibility, offering both pay monthly and SIM only plans with some great benefits.
- No mid-contract annual price rises
- Flexible 30 day plans
- Roll over your unused data
- WiFi calling
All you need to know about iD Mobile SIM only plans
iD Mobile is a UK mobile provider owned by Currys, offering SIM only, pay monthly phone and Pay As You Go plans.
The network is known for competitive pricing and flexible SIM only plans, with options ranging from 30-day rolling contracts through to 12-month and 24-month deals.
iD Mobile also includes several useful features as standard, including data rollover, 5G at no extra cost, Wi-Fi Calling, bill capping and inclusive roaming in 50 destinations.
Let's take a closer look at what iD Mobile has to offer.
iD Mobile SIM only plans
An iD Mobile SIM only deal is a good option if you already have a phone you're happy with and don't want to pay for a new handset.
You can choose between 30-day, 12-month and 24-month plans, with a range of data allowances available. All pay monthly SIM only plans include unlimited minutes and texts.
The 30-day plans offer the most flexibility, while the longer contracts can offer a lower monthly price if you're happy to commit for longer.
iD Mobile also offers unlimited data SIM only plans, with unlimited data currently available on 30-day, 12-month and 24-month contracts.
Another useful feature is the ability to change your plan, subject to eligibility. This means you can increase your allowance if your data needs change without necessarily having to take out a new contract.
Why choose iD Mobile?
Data rollover
One of the most useful iD Mobile features is Data Rollover. If you don't use all your monthly data allowance, your unused data automatically rolls over into the following month. Rollover data is used before your new monthly allowance and expires after one month. That means you're less likely to lose data you've already paid for simply because you had a quieter month.
No annual price rises on SIM only plans
iD Mobile's SIM only plans don't have the fixed annual price increases that apply to some of its pay monthly phone contracts. This makes the monthly cost of an iD SIM only deal easier to budget for, although promotional pricing and other changes to your plan can still apply depending on the deal you choose.
5G at no extra cost
5G is included with iD Mobile plans at no additional charge. You'll need a compatible 5G phone and suitable 5G coverage in your area, but there is no separate 5G add-on to pay for. iD Mobile currently uses Three's network, with 5G available in hundreds of locations across the UK.
Wi-Fi Calling
iD Mobile supports Wi-Fi Calling, which allows compatible phones to make and receive calls over a Wi-Fi connection. This can be particularly useful if you have poor mobile reception inside your home or workplace but have a reliable Wi-Fi connection.
Bill capping
Bill capping gives you greater control over how much you can spend each month. You can set a limit to help prevent unexpected charges if you use up your allowance or incur charges while travelling outside iD Mobile's inclusive roaming destinations. It's a useful feature if you want the reassurance of knowing that your mobile bill can't suddenly run away from you.
eSIM support
iD Mobile supports eSIM on compatible devices, so you don't necessarily need to use a physical SIM card. An eSIM can be particularly convenient if you have a compatible phone that supports multiple SIMs, or if you want to switch networks without waiting for a physical SIM to arrive.
iD Perks
iD Mobile customers can also access iD Perks, a loyalty platform offering discounts and offers from a range of well-known brands. iD Perks is available to new and existing customers across all plans, and the offers are updated periodically. You can access the available offers through the iD Mobile app.
iD Mobile coverage and network
iD Mobile doesn't operate its own mobile network. Its UK services currently run on Three's network, giving iD customers access to Three's 4G and 5G infrastructure.
As with any mobile provider, coverage varies depending on where you live, work and travel, so it's worth checking the coverage in the places where you use your phone most.
iD Mobile's 5G network is currently available in more than 400 locations across the UK, although the availability of 5G will depend on your location and whether your phone supports it.
You can check iD Mobile's coverage before signing up using its online coverage checker.
Roaming with iD Mobile
Roaming is one of iD Mobile's strongest features.
All iD Mobile plans include inclusive EU roaming in 50 destinations, allowing you to use your included UK minutes, texts and data abroad without paying a daily roaming charge.
A 30GB fair-use limit applies to data usage in the inclusive roaming destinations.
If you're travelling outside the 50 included destinations, iD Mobile also offers Roam Beyond data add-ons. These currently provide additional roaming data in a further 50 destinations, with options including 2GB for one day, 10GB for five days or 20GB for ten days.
It's still important to check the roaming rules for your destination before travelling, as charges and allowances vary between countries.
Things to consider before choosing iD Mobile
iD Mobile offers plenty of value, but it won't necessarily be the best choice for everyone.
Check the coverage where you live
Because iD Mobile uses Three's network, the quality of your service depends on Three's coverage in the places you use your phone. Check the coverage before switching, particularly if you live in a rural area or regularly travel to places where mobile coverage can be patchy.
Longer contracts mean less flexibility
The 12-month and 24-month plans can offer good value, but you'll have less flexibility than with a 30-day rolling plan. If you think you might want to change provider soon, the 30-day option could be worth paying slightly more for.
Roaming outside the included destinations can cost extra
The 50 inclusive roaming destinations are a major benefit, but they don't cover every country. If you regularly travel outside the included destinations, check the available Roam Beyond add-ons and the standard roaming charges before travelling.
5G requires a compatible phone
Although 5G is included at no extra cost, you'll need a compatible handset and suitable 5G coverage to use it.
What else does iD Mobile offer?
Pay As You Go SIMs
If you don't want to commit to a pay monthly contract, iD Mobile also offers 30-day Pay As You Go SIMs.
These don't require a credit check and include unlimited minutes and texts, with a choice of data allowances ranging from light-use options through to unlimited data.
The fixed 30-day plans can be a useful option if you want flexibility without committing to a longer contract.
View iD Mobile's pay as you go plans
Pay monthly phone contracts
iD Mobile also sells pay monthly phones from a range of manufacturers. These combine a handset with a monthly mobile plan, so they can be an alternative if you're looking for a new phone as well as a mobile service.
However, if you already have a phone you're happy with, a SIM only deal will generally be the simpler option because you're only paying for your mobile service.
Frequently asked questions
Can I get unlimited data with iD Mobile?
Yes. iD Mobile offers unlimited data SIM only plans on 30-day, 12-month and 24-month contracts.
What network does ID mobile use?
iD Mobile uses Three's network in the UK for its 4G and 5G services.
Does iD Mobile offer 5G?
Yes. 5G is available at no extra cost on iD Mobile plans. You'll need a compatible phone and 5G coverage in your area.
Does iD Mobile offer Wi-Fi Calling?
Yes. iD Mobile supports Wi-Fi Calling on compatible devices. This allows you to make and receive calls over a Wi-Fi connection where mobile reception may be poor.
Does iD Mobile offer data rollover?
Yes. Unused data from your monthly allowance automatically rolls over into the following month. Rollover data is used first and expires after one month.
Does iD Mobile have annual price rises?
iD Mobile's SIM only plans are not subject to its fixed annual price increase. The fixed annual increase applies to eligible pay monthly phone contracts instead.
Can I use iD Mobile abroad?
Yes. All iD Mobile plans include roaming in 50 destinations, with a 30GB fair-use limit on data. For destinations outside the inclusive roaming zone, iD Mobile offers Roam Beyond add-ons in a further 50 countries.
Does iD Mobile support eSIM?
Yes. iD Mobile supports eSIM on compatible devices.
Can I keep my existing mobile number when switching to iD Mobile?
Yes. You can keep your existing number when you switch to iD Mobile. Request a PAC from your current provider by texting PAC to 65075, then give the PAC to iD Mobile when you sign up.
Does iD Mobile require a credit check?
Pay monthly SIM only plans are subject to a credit check. iD Mobile's 30-day Pay As You Go SIMs don't require a credit check.
How do I switch to iD Mobile SIM only?
Switching to iD Mobile SIM only couldn't be easier. Once you have found the offer you want, simply click the ‘View Offer’ button. This will take you to iD Mobile’s website, who will guide you through the rest of the process. Or you can click the link below to go direct to the iD Mobile website.
