O2 SIM Only Deals

Looking for all networks? See our SIM Only deals page Ofcom price comparison accredited
  • Exclusivei
    O2 SIM - 12 month contract
    More Close
    Your monthly cost
    Monthly cost for 4 months(from 23 December 2025)
    £7.50
    Monthly cost for 8 months(from 23 April 2026)
    £10.00£2.50 price rise
    Average
    £9.17
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £110.00
    Effective monthly cost*
    £9.17
    *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
    O2 more information
    Close
    O2
    20GB data
    First 4 months £7.50/month
    5-12 months £10.00/month
    Average of months £9.17/month
    Contract length 12 months
    Total cost of ownership £110.00
    • 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 4 months(from 23 December 2025)
    £8.00
    Monthly cost for 8 months(from 23 April 2026)
    £10.50£2.50 price rise
    Average
    £9.67
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £116.00
    Effective monthly cost*
    £9.67
    *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
    O2 more information
    Close
    O2
    40GB data
    First 4 months £8.00/month
    5-12 months £10.50/month
    Average of months £9.67/month
    Contract length 12 months
    Total cost of ownership £116.00
    • 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 4 months(from 23 December 2025)
    £8.50
    Monthly cost for 8 months(from 23 April 2026)
    £11.00£2.50 price rise
    Average
    £10.17
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £122.00
    Effective monthly cost*
    £10.17
    *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
    O2 more information
    Close
    O2
    50GB data
    First 4 months £8.50/month
    5-12 months £11.00/month
    Average of months £10.17/month
    Contract length 12 months
    Total cost of ownership £122.00
    • 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 4 months(from 23 December 2025)
    £9.00
    Monthly cost for 8 months(from 23 April 2026)
    £11.50£2.50 price rise
    Average
    £10.67
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £128.00
    Effective monthly cost*
    £10.67
    *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
    O2 more information
    Close
    O2
    70GB data
    First 4 months £9.00/month
    5-12 months £11.50/month
    Average of months £10.67/month
    Contract length 12 months
    Total cost of ownership £128.00
    • 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 4 months(from 23 December 2025)
    £10.00
    Monthly cost for 8 months(from 23 April 2026)
    £12.50£2.50 price rise
    Average
    £11.67
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £140.00
    Effective monthly cost*
    £11.67
    *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
    O2 more information
    Close
    O2
    100GB data
    First 4 months £10.00/month
    5-12 months £12.50/month
    Average of months £11.67/month
    Contract length 12 months
    Total cost of ownership £140.00
    • 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)
    £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
    O2 more information
    Close
    O2
    10GB data
    Monthly cost £10.00/month
    Contract length No contract
    • 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 4 months(from 23 December 2025)
    £14.00
    Monthly cost for 8 months(from 23 April 2026)
    £16.50£2.50 price rise
    Average
    £15.67
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £188.00
    Effective monthly cost*
    £15.67
    *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
    O2 more information
    Close
    O2
    175GB data
    First 4 months £14.00/month
    5-12 months £16.50/month
    Average of months £15.67/month
    Contract length 12 months
    Total cost of ownership £188.00
    • 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)
    £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
    O2 more information
    Close
    O2
    30GB data
    Monthly cost £15.00/month
    Contract length No contract
    • 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 4 months(from 23 December 2025)
    £16.00
    Monthly cost for 8 months(from 23 April 2026)
    £18.50£2.50 price rise
    Average
    £17.67
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £212.00
    Effective monthly cost*
    £17.67
    *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
    O2 more information
    Close
    O2
    300GB data
    First 4 months £16.00/month
    5-12 months £18.50/month
    Average of months £17.67/month
    Contract length 12 months
    Total cost of ownership £212.00
    • 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 4 months(from 23 December 2025)
    £16.00
    Monthly cost for 12 months(from 23 April 2026)
    £18.50£2.50 price rise
    Monthly cost for 8 months(from 23 April 2027)
    £21.00£2.50 price rise
    Average
    £18.92
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £454.00
    Effective monthly cost*
    £18.92
    *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
    O2 more information
    Close
    O2
    3GB data
    First 4 months £16.00/month
    5-16 months £18.50/month
    17-24 months £21.00/month
    Average of months £18.92/month
    Contract length 24 months
    Total cost of ownership £454.00
    • 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 4 months(from 23 December 2025)
    £17.99
    Monthly cost for 12 months(from 23 April 2026)
    £20.49£2.50 price rise
    Monthly cost for 8 months(from 23 April 2027)
    £22.99£2.50 price rise
    Average
    £20.91
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £501.76
    Effective monthly cost*
    £20.91
    *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
    O2 more information
    Close
    O2
    10GB data
    First 4 months £17.99/month
    5-16 months £20.49/month
    17-24 months £22.99/month
    Average of months £20.91/month
    Contract length 24 months
    Total cost of ownership £501.76
    • 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 4 months(from 23 December 2025)
    £18.00
    Monthly cost for 12 months(from 23 April 2026)
    £20.50£2.50 price rise
    Monthly cost for 8 months(from 23 April 2027)
    £23.00£2.50 price rise
    Average
    £20.92
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £502.00
    Effective monthly cost*
    £20.92
    *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
    O2 more information
    Close
    O2
    50GB data
    First 4 months £18.00/month
    5-16 months £20.50/month
    17-24 months £23.00/month
    Average of months £20.92/month
    Contract length 24 months
    Total cost of ownership £502.00
    • 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 4 months(from 23 December 2025)
    £20.00
    Monthly cost for 12 months(from 23 April 2026)
    £22.50£2.50 price rise
    Monthly cost for 8 months(from 23 April 2027)
    £25.00£2.50 price rise
    Average
    £22.92
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £550.00
    Effective monthly cost*
    £22.92
    *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
    O2 more information
    Close
    O2
    Unlimited data
    First 4 months £20.00/month
    5-16 months £22.50/month
    17-24 months £25.00/month
    Average of months £22.92/month
    Contract length 24 months
    Total cost of ownership £550.00
    • 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)
    £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
    O2 more information
    Close
    O2
    50GB data
    Monthly cost £20.00/month
    Contract length No contract
    • No price rises
    • 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
    O2 more information
    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
You've viewed 15 of 17 deals
Deals last updated: 7 hours 25 minutes ago
Filters
  • Data >
  • Monthly cost >
  • Contract length >
  • Minutes >
  • Texts >
  • 5G >
Reset Close
Data
Clear Done
Monthly cost
Clear Done
Contract length
Clear Done
Minutes
Clear Done
Texts
Clear Done
5G
Clear Done