MoneySavingExpert Founder, Martin Lewis · Editor-in-Chief, Marcus Herbert Chair, Martin Lewis · Editor, Marcus Herbert

Cheap Three Sim Only Deals

Here are the cheapest Three Sim deals.

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Your top deals

● Currently your filters are set to 5GB+ data, 200+ mins and 500+ texts - but you can change them to suit you.
● These are today's prices, but providers often increase prices in line with inflation or a set % during the contract.
● All deals are for new customers. Existing customer? Call your provider to see if it'll offer you it (see haggling help).
30GB
5G data
Unltd Minutes
Unltd Texts
12mthContract
£35 Gift card
RewardGift card
Months 1-3
£4/mth
Months 4-12
£8/mth
Equiv cost:Equivalent cost incl reward: 
£4.09/mth
iD Mobile Customer service
Uses the Three network
iD Mobile
Customer service
Uses the Three network
Ends 11.59pm Thu (29 Feb)
Get deal*
Via iD Mobile
5GB
5G data
Unltd Minutes
Unltd Texts
1mthContract
Monthly cost
£5/mth
Ends 13 Mar
Get deal*
Via Smarty
50GB
5G data
Unltd Minutes
Unltd Texts
12mthContract
£30 Gift card
RewardGift card
Monthly cost
£8/mth
Equiv cost:Equivalent cost incl reward: 
£5.50/mth
Ends 11.59pm Thu (29 Feb)
Get deal*
Via iD Mobile
8GB
5G data
Unltd Minutes
Unltd Texts
24mthContract
£50
Automatic cashback
Monthly cost
£8/mth
Equiv cost:Equivalent cost incl cashback: 
£5.92/mth
Three is hiking prices by 7.9% from 1st April
(and it will increase prices every April by CPI plus 3.9%)
Three Customer service
Three
Customer service
Get deal*
Via Fonehouse
12GB
5G data
Unltd Minutes
Unltd Texts
12mthContract
£36
Automatic cashback
Monthly cost
£9/mth
Equiv cost:Equivalent cost incl cashback: 
£6/mth
Three is hiking prices by 7.9% from 1st April
(and it will increase prices every April by CPI plus 3.9%)
Three Customer service
Three
Customer service
Get deal*
Via MobilePhonesDirect
8GB
5G data
Unltd Minutes
Unltd Texts
1mthContract
Monthly cost
£6/mth
iD Mobile Customer service
Uses the Three network
iD Mobile
Customer service
Uses the Three network
Get deal*
Via iD Mobile
8GB
5G data
Unltd Minutes
Unltd Texts
12mthContract
£12
Automatic cashback
Monthly cost
£7/mth
Equiv cost:Equivalent cost incl cashback: 
£6/mth
Three is hiking prices by 7.9% from 1st April
(and it will increase prices every April by CPI plus 3.9%)
Three Customer service
Three
Customer service
Get deal*
Via Fonehouse
6GB
5G data
Unltd Minutes
Unltd Texts
1mthContract
Monthly cost
£6/mth
Ends 7 May
Get deal*
Via Smarty
30GB
5G data
Unltd Minutes
Unltd Texts
24mthContract
Monthly cost
£7/mth
iD Mobile Customer service
Uses the Three network
iD Mobile
Customer service
Uses the Three network
Available from 4 retailers
25GB
5G data
Unltd Minutes
Unltd Texts
1mthContract
Monthly cost
£7/mth
iD Mobile Customer service
Uses the Three network
iD Mobile
Customer service
Uses the Three network
Get deal*
Via iD Mobile
15GB
5G data
Unltd Minutes
Unltd Texts
1mthContract
Monthly cost
£7/mth
8GB
5G data
Unltd Minutes
Unltd Texts
12mthContract
Monthly cost
£7/mth
Three is hiking prices by 7.9% from 1st April
(and it will increase prices every April by CPI plus 3.9%)
Three Customer service
Three
Customer service
Get deal*
Via Three
63GB
5G data
Unltd Minutes
Unltd Texts
24mthContract
Months 1-6
£4.50/mth
Months 7-24
£9/mth
Equiv cost:Equivalent cost: 
£7.88/mth
Get deal*
Via iD Mobile
54GB
5G data
Unltd Minutes
Unltd Texts
24mthContract
Months 1-6
£4.50/mth
Months 7-24
£9/mth
Equiv cost:Equivalent cost: 
£7.88/mth
Get deal*
Via Carphone Warehouse
100GB
5G data
Unltd Minutes
Unltd Texts
24mthContract
£20 Gift card
RewardGift card
Months 1-6
£5/mth
Months 7-24
£10/mth
Equiv cost:Equivalent cost incl reward: 
£7.92/mth
Get deal*
Via iD Mobile
30GB
5G data
Unltd Minutes
Unltd Texts
12mthContract
£25
Automatic cashback
Monthly cost
£10/mth
Equiv cost:Equivalent cost incl cashback: 
£7.92/mth
Three is hiking prices by 7.9% from 1st April
(and it will increase prices every April by CPI plus 3.9%)
Three Customer service
Three
Customer service
Get deal*
Via Fonehouse
50GB
5G data
Unltd Minutes
Unltd Texts
1mthContract
Monthly cost
£8/mth
Available from 4 retailers
50GB
5G data
Unltd Minutes
Unltd Texts
1mthContract
Monthly cost
£8/mth
Ends 13 Mar
Get deal*
Via Smarty
25GB
5G data
Unltd Minutes
Unltd Texts
12mthContract
Monthly cost
£8/mth
Three is hiking prices by 7.9% from 1st April
(and it will increase prices every April by CPI plus 3.9%)
Three Customer service
Three
Customer service
Get deal*
Via Three
100GB
5G data
Unltd Minutes
Unltd Texts
12mthContract
Months 1-3
£5/mth
Months 4-12
£10/mth
Equiv cost:Equivalent cost: 
£8.75/mth
Get deal*
Via iD Mobile
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Is Three a good network?

Three is one of the four main networks in the UK. In our most recent customer service poll, Three scored 5/10 based on 393 votes.

Does Three offer Sim plans for bad credit?

Three offers a basic PAYG Sim which doesn't require a credit check. It's 'traditional' PAYG (where a customer tops up using credit and uses that for calls, texts and data) and costs 10/minute, 10p/text and 5p/MB data.

The cheapest Three Sim

The cheapest Three Sim costs £5/month and it currently offers unlimited minutes & texts and 3GB/month data over a 12-month contract. See cheap Three Sims.

Can I keep my mobile number if I switch to a Three Sim-only deal?

Yes, you can keep your old mobile phone number. If you're moving from another network, you'll need to text 'PAC' for free to 65075 to request your PAC (porting authorisation code). You will need to provide this to Three which should move your number over within one working day.

If you are already a Three customer, you'll need to fill in a 'keep my number' form on its website.

Can I use my Three Sim abroad?

Anyone joining Three after 1 October 2021 will pay £2/day to use their allowance within the EU. If you're travelling further afield, it's £5/day.

However, newbies to Three's PAYG Sim won't face these roaming charges, but you'll have to swap out your Sim before traveling, plus you'll have a different phone number. To do this, you can either top-up and pay its standard rates of 10p/min, 10p/text and 5p/Mb, or if you plan to use your phone a lot while abroad, it might be worth getting a bundle. Its cheapest is £10 and currently gives 10GB data and unlimited minutes and texts for 30 days. For more info, see Cheap Roaming.

Can I get 5G enabled Three Sims?

Yes, Three offers 5G on all of its Sims. However, be aware you'll need a 5G-compatible phone too.