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 8 months(from 1 August 2026)
    £7.00
    Monthly cost for 4 months(from 1 April 2027)
    £9.50£2.50 price rise
    Average
    £7.83
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £94.00
    Effective monthly cost*
    £7.83
    *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
    10GB data
    First 8 months £7.00/month
    9-12 months £9.50/month
    Average £7.83/month
    Contract length 12 months
    Total cost of ownership £94.00
    • 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)
    £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
    30GB 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 8 months(from 1 August 2026)
    £14.00
    Monthly cost for 4 months(from 1 April 2027)
    £16.50£2.50 price rise
    Average
    £14.83
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £178.00
    Effective monthly cost*
    £14.83
    *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 8 months £14.00/month
    9-12 months £16.50/month
    Average £14.83/month
    Contract length 12 months
    Total cost of ownership £178.00
    • 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 8 months(from 1 August 2026)
    £15.00
    Monthly cost for 4 months(from 1 April 2027)
    £17.50£2.50 price rise
    Average
    £15.83
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £190.00
    Effective monthly cost*
    £15.83
    *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 8 months £15.00/month
    9-12 months £17.50/month
    Average £15.83/month
    Contract length 12 months
    Total cost of ownership £190.00
    • 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
    90GB data
    Monthly cost £15.00/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 8 months(from 1 August 2026)
    £18.00
    Monthly cost for 12 months(from 1 April 2027)
    £20.50£2.50 price rise
    Monthly cost for 4 months(from 1 April 2028)
    £23.00£2.50 price rise
    Average
    £20.08
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £482.00
    Effective monthly cost*
    £20.08
    *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
    3GB data
    First 8 months £18.00/month
    9-20 months £20.50/month
    21-24 months £23.00/month
    Average £20.08/month
    Contract length 24 months
    Total cost of ownership £482.00
    • 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
    150GB 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 8 months(from 1 August 2026)
    £20.99
    Monthly cost for 12 months(from 1 April 2027)
    £23.49£2.50 price rise
    Monthly cost for 4 months(from 1 April 2028)
    £25.99£2.50 price rise
    Average
    £23.07
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £553.76
    Effective monthly cost*
    £23.07
    *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 8 months £20.99/month
    9-20 months £23.49/month
    21-24 months £25.99/month
    Average £23.07/month
    Contract length 24 months
    Total cost of ownership £553.76
    • 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 8 months(from 1 August 2026)
    £23.99
    Monthly cost for 12 months(from 1 April 2027)
    £26.49£2.50 price rise
    Monthly cost for 4 months(from 1 April 2028)
    £28.99£2.50 price rise
    Average
    £26.07
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £625.76
    Effective monthly cost*
    £26.07
    *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 8 months £23.99/month
    9-20 months £26.49/month
    21-24 months £28.99/month
    Average £26.07/month
    Contract length 24 months
    Total cost of ownership £625.76
    • 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
    250GB 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 8 months(from 1 August 2026)
    £35.00
    Monthly cost for 4 months(from 1 April 2027)
    £37.50£2.50 price rise
    Average
    £35.83
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £430.00
    Effective monthly cost*
    £35.83
    *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 8 months £35.00/month
    9-12 months £37.50/month
    Average £35.83/month
    Contract length 12 months
    Total cost of ownership £430.00
    • 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)
    £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
You've viewed 12 of 12 deals
Deals last updated: 3 hours 3 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