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BT Mobile SIM only plans: compare their best deals in August

BT Mobile logo with a SIM cardVisit

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We check how good value BT Mobile's SIM only deals are this month, compared to other UK mobile networks. Here are the results. SIM Sherpa is your trusty guide. Last updated: 1st August 2022.

BT's best SIM only deals

Our highest-rated SIM only deal on BT Mobile this month

BT Mobile SIM card
40GB data
a month

24-month dealGet this deal

(opens in new window)

Looking at what you can get on SIM only with BT Mobile this August, our best-rated deal would be their 24‑month plan below, which comes with 40GB data, plus unlimited minutes and texts for £15 a month:

It's definitely one of BT's best. But it's not market-leading. You can get a similar plan on other providers for less, even if you need your SIM to use the EE network. Here are other networks you can beat it on:

Their £8 for 5GB plan is a decent deal for August

BT Mobile SIM card
5GB data
a month

24-month dealGet this deal

(opens in new window)

For less monthly data, our next best pick of BT Mobile SIM only plans is their 24‑month £8 deal below, which gets you 5GB data and unlimited minutes and texts:

Even though it's in our pick of BT's best SIM only deals, you can actually beat it on price with other providers, including ones that also use the EE network. See the networks with cheaper plans here:

They're also offering 10GB for £10 on SIM only currently

BT Mobile SIM card
10GB data
a month

24-month dealGet this deal

(opens in new window)

For more monthly data, BT Mobile are also offering this £10 SIM, which includes 10GB data, unlimited minutes and texts on a 24‑month plan. It's another of their best deals:

While this is a good enough deal to make it into the best of BT's SIMs, you can beat it for price (even if you definitely want a provider that uses the EE network). Here's which other networks can beat it:

Compare all SIM only plans

Compare deals from all networks

How BT Mobile's deals compare with other networks

SIM card with magnifying glass



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More about BT Mobile's SIM only plans

How BT Mobile’s SIM only prices and benefits compare

A finger pointing to rating stars next to BT logo

What we think about BT's whole networkRead our full review

(opens in new window)

In our review of BT Mobile, we showed that one of the best things about them is their network. You get full access to EE’s brilliant 4G and 5G networks and they also offer a brilliant WiFi calling and WiFi hotspot schemes.

Their pay monthly SIM only plans are available on either 12-month or 24-month contracts. Their longer 24-month contracts usually save you money in the long term, but you should compare prices to look for the best current deal.

BT’s most competitive plans are their mid-range data plans on 24-month contracts. And if you’re a BT broadband customer, you can get a flat £5 discount, which makes their plans much better value.

They offer some nice benefits for the price. BT offer inclusive roaming in 47 EU destinations and let you use up to 50GB while abroad, as well as offering great discounts on family plans and free access to the BT Sports app.

Useful link: Read our full BT Mobile review

Useful information about BT’s SIM only deals

Screenshot of BT's coverage checker

See signal where you use your phoneCheck your signal

(opens in new window)

BT will ship your SIM card to you within 3 working days and the package you receive will contain each size of SIM card, meaning you can pop it out and use it in any phone. They don’t yet offer eSIMs (see the networks that do here).

When you buy something online it’s your right as the customer to return your SIM card within 14 days of its arrival to get a full refund. But BT actually offer 30 days to trial their network risk-free.

You will be subject to a credit check to get a BT SIM only deal, even if you already have BT’s broadband. There are no pay as you go options to avoid this. You'll pay by direct debit from your bank account.

Finally, if you want to switch to BT from another network while keeping your number, you can do so. Just follow their instructions here by getting a PAC from your old provider and give it to BT at any point.

Useful link: Compare all BT Mobile SIMs

Other BT Mobile guides