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BT Mobile SIM only plans: compare their best deals for January

BT Mobile logo with a SIM card

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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: 4th January 2021.

BT's best SIM only deals

The best value SIM only deal on BT Mobile this month

BT Mobile SIM card
 
60GB data
£20
a month

12-month dealGet this deal

at bt.com
(opens in new window)

Looking at what you can get on SIM only with BT Mobile this January, our best-rated deal would be their 12‑month plan below, which comes with 60GB data, plus unlimited minutes and texts for £20 a month:

It's a good enough deal to get into BT's best SIMs but you can actually get a lower price for a similar plan elsewhere, even if you definitely want it to use the EE network. Here are the networks where it'd cost less:

BT's 40GB for £15 plan is a good option too

BT Mobile SIM card
 
40GB data
£15
a month

12-month dealGet this deal

at bt.com
(opens in new window)

If you wouldn't get through that much data, we think this 40GB is one of the best SIM only plans on BT Mobile too. It's on a 12‑month deal, comes with unlimited minutes and texts - all for £15 a month:

It might not be the lowest-cost SIM only deal with 40GB data or more on the entire market but if you're sure you need a SIM using the EE network, it is the best-priced. See which networks that are cheaper here:

Their £10 for 20GB plan is a decent deal for January

BT Mobile SIM card
 
20GB data
£10
a month

24-month dealGet this deal

at bt.com
(opens in new window)

For a smaller chunk of monthly data, we also think this £10 BT Mobile SIM is one of their best options. It comes with 20GB data, unlimited minutes and texts on a 24‑month deal:

If you don't need your SIM to be on a provider that uses the EE network, you can beat this deal elsewhere. But if you do, it's the cheapest 20GB data or more option. Here's where else you can get a lower price:

They're also offering 1GB for £5 on SIM only currently

BT Mobile SIM card
 
1GB data
£5
a month

24-month dealGet this deal

at bt.com
(opens in new window)

If you don't need that much data, BT's £5 SIM below is another of their best deals this month. For £5 a month, it offers 1GB data, unlimited minutes and texts on a 24‑month plan:

It isn't actually the cheapest 1GB data or more SIM available overall this month but if you definitely need your plan to use the EE network, it is the lowest cost option. See who's offering it for less here:

Other BT Mobile guides