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5G SIM only deals

5G SIM only deals are a great way to save money if you don't need a new phone. We've found the best 5G SIM only deals available on the market.

O2 5G SIM only dealsVodafone 5G SIM only deals
Our top pick
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Up to 100Mbps

Red SIM Only 30GB

Data
30 GB
(Up to 100Mbps included)
Allowances
Unlimited minutes
Unlimited texts
Contract
24 months
Total cost: £504
Price
£21per month
  • Price becomes £23.50 on 1 April 2026
  • Price becomes £26 on 1 April 2027
Maximum speed of 100Mbps
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Unlimited speed

Unlimited Max SIM Only

Data
Unlimited
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
12 months
Total cost: £456
Price
£38per month
  • Price becomes £40.50 on 1 April 2026
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Unlimited speed
5G+

Red SIM Only 20GB Xtra Global Roam

Data
20 GB
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
12 months
Total cost: £372
Price
£31per month
  • Price becomes £33.50 on 1 April 2026
Get deal
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Up to 100Mbps
5G+

Unlimited SIM Only Plus Xtra Global Roam

Data
Unlimited
(Up to 100Mbps included)
Allowances
Unlimited minutes
Unlimited texts
Contract
24 months
Total cost: £744
Price
£31per month
  • Price becomes £33.50 on 1 April 2026
  • Price becomes £36 on 1 April 2027
Get deal
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Up to 100Mbps

Red SIM Only 1GB

Data
1 GB
(Up to 100Mbps included)
Allowances
Unlimited minutes
Unlimited texts
Contract
24 months
Total cost: £360
Price
£15per month
  • Price becomes £17.50 on 1 April 2026
  • Price becomes £20 on 1 April 2027
Get deal
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Unlimited speed
5G+

Unlimited Max SIM Only Xtra Euro Roam

Data
Unlimited
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
12 months
Total cost: £540
Price
£45per month
  • Price becomes £47.50 on 1 April 2026
Get deal
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Up to 100Mbps
5G+

Unlimited SIM Only Plus Xtra Global Roam + Entertainment

Data
Unlimited
(Up to 100Mbps included)
Allowances
Unlimited minutes
Unlimited texts
Contract
24 months
Total cost: £936
Price
£39per month
  • Price becomes £41.50 on 1 April 2026
  • Price becomes £44 on 1 April 2027
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Unlimited speed

Unlimited Max SIM Only

Data
Unlimited
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
1 month
Price
£48per month
Get deal
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Unlimited speed
5G+

Unlimited Max SIM Only Xtra Global Roam

Data
Unlimited
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
24 months
Total cost: £1104
Price
£46per month
  • Price becomes £48.50 on 1 April 2026
  • Price becomes £51 on 1 April 2027
Get deal
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Unlimited speed
5G+

Red SIM Only 5GB Xtra Euro Roam

Data
5 GB
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
12 months
Total cost: £312
Price
£26per month
  • Price becomes £28.50 on 1 April 2026
Get deal
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Up to 100Mbps
5G+

Unlimited SIM Only Plus Xtra Euro Roam + Entertainment

Data
Unlimited
(Up to 100Mbps included)
Allowances
Unlimited minutes
Unlimited texts
Contract
24 months
Total cost: £792
Price
£33per month
  • Price becomes £35.50 on 1 April 2026
  • Price becomes £38 on 1 April 2027
Get deal

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