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O2 mobile broadband SIM only

O2 mobile broadband SIMs are used for devices as as mifi units. If you need something different, O2 are have a range of other SIM only deals available:

What devices can I use an O2 mobile broadband SIM in?

O2 mobile broadband SIMs are data-only SIMs designed for MiFi units, 4G and 5G routers, USB dongles and tablets rather than phones.

They're a handy way to get online when you're away from home, set up a portable Wi-Fi hotspot, or connect a laptop on the move.

Can an O2 mobile broadband SIM replace my home broadband?

It can, especially in areas with strong O2 4G or 5G coverage. Popped into a router, a data-only SIM lets several devices share the connection without a fixed-line installation.

For everyday browsing and streaming choose a large or unlimited data allowance, and check O2's coverage and typical speeds at your address before relying on it.

Our top pick
logo
Unlimited speed
5G+

SIM Only Mini Unlimited

Data
Unlimited
(Unlimited speed included)
Allowances
0 minutes
100 texts
Contract
24 months
Total cost: £720
Price
£30per month
  • Price becomes £30.75 on 1 April 2027
  • Price becomes £31.50 on 1 April 2028
Recommend a Friend and Earn Rewards
Get deal
logo
Unlimited speed
5G+

SIM Only Mini 250GB

Data
250 GB
(Unlimited speed included)
Allowances
0 minutes
100 texts
Contract
24 months
Total cost: £600
Price
£25per month
  • Price becomes £25.75 on 1 April 2027
  • Price becomes £26.50 on 1 April 2028
Get deal

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logo
Unlimited speed
5G+

SIM Only Mini 2GB

Data
2 GB
(Unlimited speed included)
Allowances
0 minutes
100 texts
Contract
24 months
Total cost: £192
Price
£8per month
  • Price becomes £8.75 on 1 April 2027
  • Price becomes £9.50 on 1 April 2028
Get deal
logo
Unlimited speed
5G+

SIM Only Mini 20GB

Data
20 GB
(Unlimited speed included)
Allowances
0 minutes
100 texts
Contract
24 months
Total cost: £360
Price
£15per month
  • Price becomes £15.75 on 1 April 2027
  • Price becomes £16.50 on 1 April 2028
Get deal
logo
Unlimited speed
5G+

SIM Only Mini 100GB

Data
100 GB
(Unlimited speed included)
Allowances
0 minutes
100 texts
Contract
24 months
Total cost: £432
Price
£18per month
  • Price becomes £18.75 on 1 April 2027
  • Price becomes £19.50 on 1 April 2028
Get deal
logo
Unlimited speed
5G+

SIM Only Mini 100GB

Data
100 GB
(Unlimited speed included)
Allowances
0 minutes
100 texts
Contract
12 months
Total cost: £252
Price
£21per month
  • Price becomes £21.75 on 1 April 2027
Get deal
logo
Unlimited speed
5G+

SIM Only Mini 5GB

Data
5 GB
(Unlimited speed included)
Allowances
0 minutes
100 texts
Contract
24 months
Total cost: £264
Price
£11per month
  • Price becomes £11.75 on 1 April 2027
  • Price becomes £12.50 on 1 April 2028
Get deal
logo
Unlimited speed
5G+

SIM Only Mini 20GB

Data
20 GB
(Unlimited speed included)
Allowances
0 minutes
100 texts
Contract
12 months
Total cost: £216
Price
£18per month
  • Price becomes £18.75 on 1 April 2027
Get deal
logo
Unlimited speed
5G+

SIM Only Mini 2GB

Data
2 GB
(Unlimited speed included)
Allowances
0 minutes
100 texts
Contract
12 months
Total cost: £132
Price
£11per month
  • Price becomes £11.75 on 1 April 2027
Get deal
logo
Unlimited speed
5G+

SIM Only Mini 5GB

Data
5 GB
(Unlimited speed included)
Allowances
0 minutes
100 texts
Contract
12 months
Total cost: £168
Price
£14per month
  • Price becomes £14.75 on 1 April 2027
Get deal
logo
Unlimited speed
5G+

SIM Only Mini 250GB

Data
250 GB
(Unlimited speed included)
Allowances
0 minutes
100 texts
Contract
12 months
Total cost: £336
Price
£28per month
  • Price becomes £28.75 on 1 April 2027
Get deal

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