iD Mobile SIM Only Deals – Flexible Plans with up to £50 Currys voucher, 5G, Data Rollover & Roaming

If you’re looking for a SIM only deal that gives you plenty of value without locking you into a long contract, iD Mobile is well worth a look. Running on the Three network, iD Mobile offers reliable coverage, free EU roaming, data rollover, 5G as standard, and the option to set a monthly spending cap to avoid any surprise bills.

Whether you just need a small bundle or want unlimited data, iD Mobile has a range of simple, flexible plans to suit your needs.

Why Go with iD Mobile?

• All plans come with 5G – no extra charge, just make sure your phone supports it

• Data rollover – anything you don’t use gets carried over to the next month

• Roaming in 50+ countries – use your data, minutes and texts in the EU like you’re at home

• Wi-Fi Calling & 4G Calling (VoLTE) – stay connected in low signal areas

• eSIM available – no waiting around for a SIM card if your phone supports eSIM

• No mid-contract price hikes – what you sign up for is what you’ll pay

• Spending caps – set a monthly cap to keep your bill under control

• Flexible contracts – choose from rolling 1-month or longer-term deals

iD Mobile SIM Only FAQs

Is a SIM only plan with iD Mobile cheaper than a phone contract?

Yes — SIM only deals with iD Mobile are generally much cheaper because you’re not paying off a phone. If you already have a handset, it’s a great way to cut down on monthly costs without sacrificing features.

Can I keep my number when switching to iD Mobile?

You can. Just text “PAC” to 65075 from your current number to get your code, then give that to iD Mobile when you’re setting up your new SIM. Your number will transfer over, usually within one working day.

Does my phone need to be unlocked to use iD Mobile?

Yes, your phone should be unlocked or already compatible with the Three network. If it’s locked to another provider, you’ll need to get it unlocked before using an iD Mobile SIM.

Do iD Mobile SIM only plans include 5G?

They do. All iD Mobile SIM only plans come with 5G access at no extra cost — provided your phone supports 5G and you’re in a 5G coverage area.

Can I use my iD Mobile SIM abroad?

Yes, iD Mobile lets you roam at no extra cost in 50+ EU destinations. You can use your minutes, texts and data just like you would at home, although a fair usage limit applies (usually around 30GB per month while roaming).

How does data rollover work with iD Mobile?

If you don’t use all your data one month, it rolls over automatically into the next month. That gives you a bit of breathing room if your usage varies from month to month.

Does iD Mobile offer eSIMs?

Yes, iD Mobile now supports eSIMs on compatible devices. It’s a quick and easy way to get started — no waiting around for a physical SIM to arrive in the post.

Does iD Mobile include international calls?

No, international calls from the UK to other countries aren’t included as standard. These are charged separately at out-of-plan rates, and iD Mobile currently doesn’t offer add-ons for international calling.

Can I use my iD Mobile SIM for tethering or hotspot?

Yes — iD Mobile lets you use your data for tethering, so you can share your mobile internet with a laptop, tablet or other devices. Just be mindful of your data allowance if you’re on a capped plan.

Does iD Mobile support Wi-Fi Calling and VoLTE?

Yes, both are available. Wi-Fi Calling lets you make calls even when you’ve got little or no signal, and VoLTE (also known as 4G Calling) improves call quality when you’re connected to 4G.

Do iD Mobile SIM only plans involve a credit check?

Yes — iD Mobile requires a credit check for all SIM only plans. If your application isn’t approved, you can still go for a Pay As You Go SIM, which doesn’t involve any credit check and can be topped up as needed.

Can I cancel my iD Mobile plan anytime?

If you’re on a 1-month rolling plan, you can cancel whenever you like without any fees — just give 30 days’ notice. If you’re on a 12- or 24-month plan, check your contract terms, as early termination fees may apply.

Does iD Mobile offer any student or NHS discounts?

iD Mobile doesn’t have ongoing student or NHS schemes, but you might spot limited-time promotions or cashback offers via retailers like Currys. Keep an eye on Olimit for the latest deals.

Are there multi-SIM or family discounts?

Not at the moment. iD Mobile offers individual plans only, but you can still manage multiple lines from the same account if needed.

Final Thoughts

iD Mobile offers a strong mix of value and flexibility. You get modern features like 5G, eSIM, Wi-Fi Calling, and data rollover across all their SIM only plans, and the ability to roam across Europe without extra charges. Just be aware of the credit check if you’re applying, and keep in mind that international calls aren’t included.

If you’re looking for a reliable, low-hassle SIM only plan with no hidden surprises, iD Mobile is definitely worth considering.

👉 Check out and compare all the latest iD Mobile SIM Only Deals right here on Olimit.