O2 SIM Only Deals

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  • Exclusivei
    O2 SIM - 12 month contract
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    Your monthly cost
    Monthly cost for 12 months(no price rises)
    £10.00
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £120.00
    Effective monthly cost*
    £10.00
    *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
    Monthly cost £10.00/month
    Contract length 12 months
    Total cost of ownership £120.00
    • No price rises
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by O2
  • O2 SIM - 30 day rolling
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    Your monthly cost
    Monthly cost for 1 month(no price rises)
    £10.00
    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
    10GB data
    Monthly cost £10.00/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 12 months(no price rises)
    £12.00
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £144.00
    Effective monthly cost*
    £12.00
    *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
    Monthly cost £12.00/month
    Contract length 12 months
    Total cost of ownership £144.00
    • No price rises
    • 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 12 months(no price rises)
    £15.00
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £180.00
    Effective monthly cost*
    £15.00
    *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
    Monthly cost £15.00/month
    Contract length 12 months
    Total cost of ownership £180.00
    • No price rises
    • 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 12 months(no price rises)
    £16.00
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £192.00
    Effective monthly cost*
    £16.00
    *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
    Monthly cost £16.00/month
    Contract length 12 months
    Total cost of ownership £192.00
    • 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 12 months(from 4 April 2026)
    £16.00
    Monthly cost for 12 months(from 4 April 2027)
    £18.50£2.50 price rise
    Average
    £17.25
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £414.00
    Effective monthly cost*
    £17.25
    *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
    3GB data
    First 12 months £16.00/month
    13-24 months £18.50/month
    Average £17.25/month
    Contract length 24 months
    Total cost of ownership £414.00
    • 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 12 months(from 4 April 2026)
    £17.00
    Monthly cost for 12 months(from 4 April 2027)
    £19.50£2.50 price rise
    Average
    £18.25
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £438.00
    Effective monthly cost*
    £18.25
    *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 12 months £17.00/month
    13-24 months £19.50/month
    Average £18.25/month
    Contract length 24 months
    Total cost of ownership £438.00
    • 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 12 months(from 4 April 2026)
    £19.00
    Monthly cost for 12 months(from 4 April 2027)
    £21.50£2.50 price rise
    Average
    £20.25
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £486.00
    Effective monthly cost*
    £20.25
    *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 12 months £19.00/month
    13-24 months £21.50/month
    Average £20.25/month
    Contract length 24 months
    Total cost of ownership £486.00
    • 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 12 months(from 4 April 2026)
    £22.99
    Monthly cost for 12 months(from 4 April 2027)
    £25.49£2.50 price rise
    Average
    £24.24
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £581.76
    Effective monthly cost*
    £24.24
    *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 12 months £22.99/month
    13-24 months £25.49/month
    Average £24.24/month
    Contract length 24 months
    Total cost of ownership £581.76
    • 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)
    £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
    • 5G speeds
    See deal
    Sold by O2
  • O2 SIM - 12 month contract
    More Close
    Your monthly cost
    Monthly cost for 12 months(no price rises)
    £35.00
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £420.00
    Effective monthly cost*
    £35.00
    *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
    Monthly cost £35.00/month
    Contract length 12 months
    Total cost of ownership £420.00
    • No price rises
    • 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)
    £38.00
    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
    Unlimited data
    Monthly cost £38.00/month
    Contract length No contract
    • No price rises
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by O2
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Deals last updated: 5 hours 49 minutes ago
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