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.

SIM Only Mini Unlimited
- Price becomes £30.75 on 1 April 2027
- Price becomes £31.50 on 1 April 2028

SIM Only Mini 250GB
- Price becomes £25.75 on 1 April 2027
- Price becomes £26.50 on 1 April 2028

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SIM Only Mini 2GB
- Price becomes £8.75 on 1 April 2027
- Price becomes £9.50 on 1 April 2028

SIM Only Mini 20GB
- Price becomes £15.75 on 1 April 2027
- Price becomes £16.50 on 1 April 2028

SIM Only Mini 100GB
- Price becomes £18.75 on 1 April 2027
- Price becomes £19.50 on 1 April 2028

SIM Only Mini 100GB
- Price becomes £21.75 on 1 April 2027

SIM Only Mini 5GB
- Price becomes £11.75 on 1 April 2027
- Price becomes £12.50 on 1 April 2028

SIM Only Mini 20GB
- Price becomes £18.75 on 1 April 2027

SIM Only Mini 2GB
- Price becomes £11.75 on 1 April 2027

SIM Only Mini 5GB
- Price becomes £14.75 on 1 April 2027

SIM Only Mini 250GB
- Price becomes £28.75 on 1 April 2027
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