O2 SIM Only Deals

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  • Exclusivei
    O2 SIM - 12 month contract
    More Close
    Your monthly cost
    Monthly cost for 2 months(from 8 February 2026)
    £7.50
    Monthly cost for 10 months(from 8 April 2026)
    £10.00£2.50 price rise
    Average
    £9.58
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £115.00
    Effective monthly cost*
    £9.58
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    O2 benefits
    • Upgrade anytime with O2 Refresh
    • Rewards with O2 Priority
    • 5G with all plans
    • Free EU roaming up to 25GB
    • 99%+ UK coverage
    • Wi-Fi and VoLTE calling
    O2 complaints O2 received an average of 3 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Close
    O2
    20GB data
    First 2 months £7.50/month
    3-12 months £10.00/month
    Average £9.58/month
    Contract length 12 months
    Total cost of ownership £115.00
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by O2
  • Exclusivei
    O2 SIM - 12 month contract
    More Close
    Your monthly cost
    Monthly cost for 2 months(from 8 February 2026)
    £8.00
    Monthly cost for 10 months(from 8 April 2026)
    £10.50£2.50 price rise
    Average
    £10.08
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £121.00
    Effective monthly cost*
    £10.08
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    O2 benefits
    • Upgrade anytime with O2 Refresh
    • Rewards with O2 Priority
    • 5G with all plans
    • Free EU roaming up to 25GB
    • 99%+ UK coverage
    • Wi-Fi and VoLTE calling
    O2 complaints O2 received an average of 3 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Close
    O2
    40GB data
    First 2 months £8.00/month
    3-12 months £10.50/month
    Average £10.08/month
    Contract length 12 months
    Total cost of ownership £121.00
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by O2
  • Exclusivei
    O2 SIM - 12 month contract
    More Close
    Your monthly cost
    Monthly cost for 2 months(from 8 February 2026)
    £9.50
    Monthly cost for 10 months(from 8 April 2026)
    £12.00£2.50 price rise
    Average
    £11.58
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £139.00
    Effective monthly cost*
    £11.58
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    O2 benefits
    • Upgrade anytime with O2 Refresh
    • Rewards with O2 Priority
    • 5G with all plans
    • Free EU roaming up to 25GB
    • 99%+ UK coverage
    • Wi-Fi and VoLTE calling
    O2 complaints O2 received an average of 3 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Close
    O2
    80GB data
    First 2 months £9.50/month
    3-12 months £12.00/month
    Average £11.58/month
    Contract length 12 months
    Total cost of ownership £139.00
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by O2
  • Exclusivei
    O2 SIM - 12 month contract
    More Close
    Your monthly cost
    Monthly cost for 2 months(from 8 February 2026)
    £10.00
    Monthly cost for 10 months(from 8 April 2026)
    £12.50£2.50 price rise
    Average
    £12.08
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £145.00
    Effective monthly cost*
    £12.08
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    O2 benefits
    • Upgrade anytime with O2 Refresh
    • Rewards with O2 Priority
    • 5G with all plans
    • Free EU roaming up to 25GB
    • 99%+ UK coverage
    • Wi-Fi and VoLTE calling
    O2 complaints O2 received an average of 3 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Close
    O2
    100GB data
    First 2 months £10.00/month
    3-12 months £12.50/month
    Average £12.08/month
    Contract length 12 months
    Total cost of ownership £145.00
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by O2
  • Exclusivei
    O2 SIM - 12 month contract
    More Close
    Your monthly cost
    Monthly cost for 2 months(from 8 February 2026)
    £15.00
    Monthly cost for 10 months(from 8 April 2026)
    £17.50£2.50 price rise
    Average
    £17.08
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £205.00
    Effective monthly cost*
    £17.08
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    O2 benefits
    • Upgrade anytime with O2 Refresh
    • Rewards with O2 Priority
    • 5G with all plans
    • Free EU roaming up to 25GB
    • 99%+ UK coverage
    • Wi-Fi and VoLTE calling
    O2 complaints O2 received an average of 3 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Close
    O2
    250GB data
    First 2 months £15.00/month
    3-12 months £17.50/month
    Average £17.08/month
    Contract length 12 months
    Total cost of ownership £205.00
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by O2
  • O2 SIM - 30 day rolling
    More Close
    Your monthly cost
    Monthly cost for 1 month(no price rises)
    £15.00
    O2 benefits
    • Upgrade anytime with O2 Refresh
    • Rewards with O2 Priority
    • 5G with all plans
    • Free EU roaming up to 25GB
    • 99%+ UK coverage
    • Wi-Fi and VoLTE calling
    O2 complaints O2 received an average of 3 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Close
    O2
    30GB data
    Monthly cost £15.00/month
    Contract length No contract
    • No price rises
    • Unlimited minutes and texts
    • 5G speeds
    See deal
    Sold by O2
  • Exclusivei
    O2 SIM - 12 month contract
    More Close
    Your monthly cost
    Monthly cost for 2 months(from 8 February 2026)
    £16.00
    Monthly cost for 10 months(from 8 April 2026)
    £18.50£2.50 price rise
    Average
    £18.08
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £217.00
    Effective monthly cost*
    £18.08
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    O2 benefits
    • Upgrade anytime with O2 Refresh
    • Rewards with O2 Priority
    • 5G with all plans
    • Free EU roaming up to 25GB
    • 99%+ UK coverage
    • Wi-Fi and VoLTE calling
    O2 complaints O2 received an average of 3 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Close
    O2
    300GB data
    First 2 months £16.00/month
    3-12 months £18.50/month
    Average £18.08/month
    Contract length 12 months
    Total cost of ownership £217.00
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by O2
  • O2 SIM - 30 day rolling
    More Close
    Your monthly cost
    Monthly cost for 1 month(no price rises)
    £20.00
    O2 benefits
    • Upgrade anytime with O2 Refresh
    • Rewards with O2 Priority
    • 5G with all plans
    • Free EU roaming up to 25GB
    • 99%+ UK coverage
    • Wi-Fi and VoLTE calling
    O2 complaints O2 received an average of 3 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Close
    O2
    50GB data
    Monthly cost £20.00/month
    Contract length No contract
    • No price rises
    • Unlimited minutes and texts
    • 5G speeds
    See deal
    Sold by O2
  • O2 SIM - 24 month contract
    More Close
    Your monthly cost
    Monthly cost for 2 months(from 8 February 2026)
    £23.00
    Monthly cost for 12 months(from 8 April 2026)
    £25.50£2.50 price rise
    Monthly cost for 10 months(from 8 April 2027)
    £28.00£2.50 price rise
    Average
    £26.33
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £632.00
    Effective monthly cost*
    £26.33
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    O2 benefits
    • Upgrade anytime with O2 Refresh
    • Rewards with O2 Priority
    • 5G with all plans
    • Free EU roaming up to 25GB
    • 99%+ UK coverage
    • Wi-Fi and VoLTE calling
    O2 complaints O2 received an average of 3 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Close
    O2
    50GB data
    First 2 months £23.00/month
    3-14 months £25.50/month
    15-24 months £28.00/month
    Average £26.33/month
    Contract length 24 months
    Total cost of ownership £632.00
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by O2
  • O2 SIM - 24 month contract
    More Close
    Your monthly cost
    Monthly cost for 2 months(from 8 February 2026)
    £24.00
    Monthly cost for 12 months(from 8 April 2026)
    £26.50£2.50 price rise
    Monthly cost for 10 months(from 8 April 2027)
    £29.00£2.50 price rise
    Average
    £27.33
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £656.00
    Effective monthly cost*
    £27.33
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    O2 benefits
    • Upgrade anytime with O2 Refresh
    • Rewards with O2 Priority
    • 5G with all plans
    • Free EU roaming up to 25GB
    • 99%+ UK coverage
    • Wi-Fi and VoLTE calling
    O2 complaints O2 received an average of 3 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Close
    O2
    100GB data
    First 2 months £24.00/month
    3-14 months £26.50/month
    15-24 months £29.00/month
    Average £27.33/month
    Contract length 24 months
    Total cost of ownership £656.00
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by O2
  • O2 SIM - 24 month contract
    More Close
    Your monthly cost
    Monthly cost for 2 months(from 8 February 2026)
    £25.99
    Monthly cost for 12 months(from 8 April 2026)
    £28.49£2.50 price rise
    Monthly cost for 10 months(from 8 April 2027)
    £30.99£2.50 price rise
    Average
    £29.32
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £703.76
    Effective monthly cost*
    £29.32
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    O2 benefits
    • Upgrade anytime with O2 Refresh
    • Rewards with O2 Priority
    • 5G with all plans
    • Free EU roaming up to 25GB
    • 99%+ UK coverage
    • Wi-Fi and VoLTE calling
    O2 complaints O2 received an average of 3 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Close
    O2
    150GB data
    First 2 months £25.99/month
    3-14 months £28.49/month
    15-24 months £30.99/month
    Average £29.32/month
    Contract length 24 months
    Total cost of ownership £703.76
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by O2
  • Exclusivei
    O2 SIM - 30 day rolling
    More Close
    Your monthly cost
    Monthly cost for 1 month(no price rises)
    £30.00
    O2 benefits
    • Upgrade anytime with O2 Refresh
    • Rewards with O2 Priority
    • 5G with all plans
    • Free EU roaming up to 25GB
    • 99%+ UK coverage
    • Wi-Fi and VoLTE calling
    O2 complaints O2 received an average of 3 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Close
    O2
    150GB data
    Monthly cost £30.00/month
    Contract length No contract
    • No price rises
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by O2
  • O2 SIM - 24 month contract
    More Close
    Your monthly cost
    Monthly cost for 2 months(from 8 February 2026)
    £32.00
    Monthly cost for 12 months(from 8 April 2026)
    £34.50£2.50 price rise
    Monthly cost for 10 months(from 8 April 2027)
    £37.00£2.50 price rise
    Average
    £35.33
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £848.00
    Effective monthly cost*
    £35.33
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    O2 benefits
    • Upgrade anytime with O2 Refresh
    • Rewards with O2 Priority
    • 5G with all plans
    • Free EU roaming up to 25GB
    • 99%+ UK coverage
    • Wi-Fi and VoLTE calling
    O2 complaints O2 received an average of 3 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Close
    O2
    Unlimited data
    First 2 months £32.00/month
    3-14 months £34.50/month
    15-24 months £37.00/month
    Average £35.33/month
    Contract length 24 months
    Total cost of ownership £848.00
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by O2
You've viewed 13 of 13 deals
Deals last updated: 2 hours 20 minutes ago
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