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iD Mobile SIM only plans: how their deals compare this September

iD Mobile logo with a SIM cardVisit

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We look at how each of iD Mobile's best SIM only deals compare on price against their competitors this month. These are our findings. SIM Sherpa is your trusty guide. Last updated: 28th September 2023.

iD Mobile's best SIM only deals

Our favourite SIM only deal this month on iD Mobile

iD Mobile SIM card
45GB data
a month

1-month dealGet this deal

(opens in new window)

We think iD Mobile's best value option on SIM only this September is their £9 a month plan below, which comes with 45GB data, plus unlimited minutes and texts on a 1‑month deal:

You can beat it for price if you don't need your SIM to be with a provider using the Three network. But if that's a must, then it is the lowest-cost SIM with 45GB data or more. See lower-priced networks' deals here:

Their £7 for 20GB plan is a decent deal for September

iD Mobile SIM card
20GB data
a month

1-month dealGet this deal

(opens in new window)

If you don't want so much data, iD Mobile are also offering this £7 SIM, which includes 20GB data, unlimited minutes and texts on a 1‑month plan. It's another of their best deals:

It's currently the best priced 20GB data or more SIM only deal on a provider using the Three network, even if you can beat it on price if you're open to ones not on Three. Here are other networks you can beat it on:

They're also offering 250GB for £14 on SIM only currently

iD Mobile SIM card
250GB data
a month

1-month dealGet this deal

(opens in new window)

If you want even more data, you might like the £14 SIM only deal running on iD Mobile at the moment. It's a 1‑month plan, which comes with 250GB data, unlimited minutes and texts too:

It's actually possible to beat this deal if you're not fussed whether your SIM is with a provider using the Three network. But if you are, it is the current best-priced option. See the networks with cheaper plans here:

£16 for unlimited data is iD's next best SIM deal in September

iD Mobile SIM card
Unlimited data
a month

12-month dealGet this deal

(opens in new window)

For even more data, we'd say this is one of iD's best deals on SIM only this month too. It's a 12‑month plan, comes with unlimited data, unlimited minutes and texts for £16 a month:

In comparison to the rest of iD's current SIM only plans, it's one of the best. But it is beatable on price, even if you're set on joining a provider that uses the Three network. Here's which other networks can beat it:

Compare all SIM only plans

Compare deals from all networks

How iD Mobile's deals compare with other networks

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More about iD's SIM only plans

How iD’s benefits and SIM only prices stack up

Rating stars and iD Mobile logo

We go over everything in our iD reviewRead our full review

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In our review of iD Mobile, we said we liked that they offered full access to Three’s network (including identical 5G speeds and coverage) on low-cost deals. And they have an excellent WiFi calling scheme as well.

You can choose either a 1-month, 12-month or 24-month contract on iD. It tends to be the case that longer contracts cost you less per month. But it’s still worth checking to see what their best current deals are.

iD tend to offer great value on all their SIM only plans, and the cost of your plan won’t increase during your contract so you can hold onto that value. They’re usually one of the cheapest ways onto Three’s network.

They’re fairly low-frills, but they do have a good data rollover scheme that lets you keep unused data for your next month. They also offer inclusive EU roaming. But they don’t offer much else.

Useful link: Read our full iD Mobile review

What else you should know about iD’s SIM only plans

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Check coverage in your areaCheck your signal

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Your iD Mobile SIM card will be delivered within 2-3 working days after ordering. You’ll get each size of SIM card in your package to fit any phone. iD don’t offer eSIMs yet (see the providers that do here).

When you order anything online you have 14 days to get a full refund, and this is also the case for SIM cards. Here’s how you can get a refund if you’re unhappy with your SIM.

You’ll have to pass a credit check to join iD, no matter if you want to join on a 1-month, 12-month or 24-month contract. If you’ve been rejected for a contract you can still join on a PAYG monthly bundle.

If you’re switching from one network to get onto iD Mobile then you can keep your number by requesting a PAC from your current provider to give to iD. Here’s more info on how to do that.

Useful link: Compare all iD SIMs

Other iD Mobile guides