Unlimited Data SIM Only Deals
Compare unlimited data SIM plans, including 5G SIMs and rolling monthly contracts.
Cheapest Deal
Chattr 5GB
£10.00/month
Best Value
Chattr 5GB
£10.00/month
Chattr 5GB
Chattr
Unlimited Texts & Calls 5GB data. £10.00
The Unlimited One
Chattr
Use Code: CHATTR50 Unlimited Everything. Use code CHATTR50. £20.00 £10 For first month*. Was £20.00
Chattr 25GB
Chattr
Unlimited Texts & Calls 25GB data. £14.00
VOXI SIM Only Deals
Fonehouse
VOXI SIM Only Deals with Unlimited data on VOXI
5GB
1pMobile
Unlimited calls & texts Free EU roaming* 5G included & no speed caps Order now. Find out more £5.00 /30-days
Three SIM Only Deals
Fonehouse
Three SIM Only Deals with Unlimited data on Three
10GB
1pMobile
Unlimited calls & texts Free EU roaming* 5G included & no speed caps Order now. Find out more £8.00 /30-days
50GB
1pMobile
Unlimited calls & texts Free EU roaming* 5G included & no speed caps Order now. Find out more £10.00 /30-days
75GB
1pMobile
Unlimited calls & texts Free EU roaming* 5G included & no speed caps Order now. Find out more £12.50 /30-days
100GB
1pMobile
Unlimited calls & texts Free EU roaming* 5G included & no speed caps Order now. Find out more £15.00 /30-days
150GB
1pMobile
Unlimited calls & texts Free EU roaming* 5G included & no speed caps Order now. Find out more £17.50 /30-days
Unlimited UK calls and texts + 500MB data
1pMobile
Lasts a whole year FREE 500MB / 30-days 5G & EU roaming Find out more. Order now £48.00 /1-year
Vodafone SIM Only Deals
Fonehouse
Vodafone SIM Only Deals with Unlimited data on Vodafone
200GB
1pMobile
Unlimited calls & texts Free EU roaming* 5G included & no speed caps Order now. Find out more £20.00 /30-days
Unlimited UK calls and texts + 5GB data
1pMobile
Lasts a whole year 5GB / 30-days 5G & EU roaming Find out more. Order now £55.00 /1-year
1st SIM
1pMobile
Unlimited data, calls & texts Free EU roaming* 5G included & no speed caps. Order now £25.00 /30-days
Unlimited
1pMobile
Unlimited data, calls & texts Free EU roaming* 5G included & no speed caps Order now. Find out more £25.00 /30-days
Unlimited UK calls and texts + 10GB data
1pMobile
Lasts a whole year 10GB / 30-days 5G & EU roaming Find out more. Order now £88.00 /1-year
Unlimited UK calls and texts + 50GB data
1pMobile
Lasts a whole year 50GB / 30-days 5G & EU roaming Find out more. Order now £110.00 /1-year
Unlimited UK calls and texts + 100GB data
1pMobile
Lasts a whole year 100GB / 30-days 5G & EU roaming Find out more. Order now £165.00 /1-year
Unlimited UK calls and texts + 200GB data
1pMobile
Lasts a whole year 200GB / 30-days 5G & EU roaming Find out more. Order now £220.00 /1-year
Unlimited (1-year)
1pMobile
Last a whole year Unlimited UK calls and texts 5G & EU roaming Find out more. Order now £275.00 /1-year
Unlimited Data SIM Only Deals
Unlimited data SIM only deals can be useful if you stream, browse, tether or use mobile data regularly.
SIM only plans are often cheaper than phone contracts because you are not paying for a handset.
When comparing unlimited data SIMs, check the network, 5G availability, fair usage policy, roaming rules and contract length.
Unlimited Data SIM Only Deals FAQs
Is unlimited data worth it?
Unlimited data can be worth it if you use lots of mobile data for streaming, tethering, gaming or browsing.
Can I get 5G unlimited data SIMs?
Yes, many UK networks offer 5G unlimited data SIM only deals.
Are 30 day unlimited SIMs available?
Yes, some networks offer rolling 30 day unlimited data SIM plans, although longer contracts may be cheaper.