Three SIM Only Deals

Looking for all networks? See our SIM Only deals page Ofcom price comparison accredited
  • Three SIM - 24 month contract
    More Close
    Your monthly cost
    Monthly cost for 3 months(from 6 January 2026)
    £6.00
    Monthly cost for 12 months(from 6 April 2026)
    £7.80£1.80 price rise
    Monthly cost for 9 months(from 6 April 2027)
    £9.60£1.80 price rise
    Average
    £8.25
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £150.00
    Cashback
    £48.00 (redemption)
    Effective monthly cost*
    £6.25
    *Effective monthly cost is the total cost of ownership divided by the total contract lengthTotal cost of ownership takes into account any cashback offers
    Three benefits
    • 5G with all plans
    • Also uses Vodafone's network
    • Wi-Fi and VoLTE calling
    • Three+ Rewards App
    • 99%+ UK coverage
    Three complaints Three received an average of 2 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Three more information
    Close
    Three
    1GB data
    First 3 months £6.00/month
    4-15 months £7.80/month
    16-24 months £9.60/month
    Average £8.25/month
    Contract length 24 months
    Cashback £48.00 (redemption)
    Total cost of ownership £150.00
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by Fonehouse
  • Three SIM - 12 month contract
    More Close
    Your monthly cost
    Monthly cost for 3 months(from 6 January 2026)
    £7.00
    Monthly cost for 9 months(from 6 April 2026)
    £8.25£1.25 price rise
    Average
    £7.94
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £95.25
    Effective monthly cost*
    £7.94
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    Three benefits
    • 5G with all plans
    • Also uses Vodafone's network
    • Wi-Fi and VoLTE calling
    • Three+ Rewards App
    • 99%+ UK coverage
    Three complaints Three received an average of 2 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Three more information
    Close
    Three
    8GB data
    First 3 months £7.00/month
    4-12 months £8.25/month
    Average £7.94/month
    Contract length 12 months
    Total cost of ownership £95.25
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by Reward Mobile
  • Exclusivei
    Three SIM - 12 month contract
    More Close
    Your monthly cost
    Monthly cost for 3 months(from 6 January 2026)
    £7.00
    Monthly cost for 9 months(from 6 April 2026)
    £8.90£1.90 price rise
    Average
    £8.42
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £101.10
    Effective monthly cost*
    £8.42
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    Three benefits
    • 5G with all plans
    • Also uses Vodafone's network
    • Wi-Fi and VoLTE calling
    • Three+ Rewards App
    • 99%+ UK coverage
    Three complaints Three received an average of 2 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Three more information
    Close
    Three
    15GB data
    First 3 months £7.00/month
    4-12 months £8.90/month
    Average £8.42/month
    Contract length 12 months
    Total cost of ownership £101.10
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by Three
  • Exclusivei
    Three SIM - 12 month contract
    More Close
    Your monthly cost
    Monthly cost for 3 months(from 6 January 2026)
    £8.00
    Monthly cost for 9 months(from 6 April 2026)
    £9.90£1.90 price rise
    Average
    £9.42
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £113.10
    Effective monthly cost*
    £9.42
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    Three benefits
    • 5G with all plans
    • Also uses Vodafone's network
    • Wi-Fi and VoLTE calling
    • Three+ Rewards App
    • 99%+ UK coverage
    Three complaints Three received an average of 2 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Three more information
    Close
    Three
    30GB data
    First 3 months £8.00/month
    4-12 months £9.90/month
    Average £9.42/month
    Contract length 12 months
    Total cost of ownership £113.10
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by Three
  • Three SIM - 24 month contract
    More Close
    Your monthly cost
    Monthly cost for 3 months(from 6 January 2026)
    £8.00
    Monthly cost for 12 months(from 6 April 2026)
    £9.90£1.90 price rise
    Monthly cost for 9 months(from 6 April 2027)
    £11.80£1.90 price rise
    Average
    £10.38
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £165.00
    Cashback
    £84.00 (redemption)
    Effective monthly cost*
    £6.88
    *Effective monthly cost is the total cost of ownership divided by the total contract lengthTotal cost of ownership takes into account any cashback offers
    Three benefits
    • 5G with all plans
    • Also uses Vodafone's network
    • Wi-Fi and VoLTE calling
    • Three+ Rewards App
    • 99%+ UK coverage
    Three complaints Three received an average of 2 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Three more information
    Close
    Three
    8GB data
    First 3 months £8.00/month
    4-15 months £9.90/month
    16-24 months £11.80/month
    Average £10.38/month
    Contract length 24 months
    Cashback £84.00 (redemption)
    Total cost of ownership £165.00
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by Fonehouse
  • Three SIM - 24 month contract
    More Close
    Your monthly cost
    Monthly cost for 3 months(from 6 January 2026)
    £8.00
    Monthly cost for 12 months(from 6 April 2026)
    £9.25£1.25 price rise
    Monthly cost for 9 months(from 6 April 2027)
    £10.50£1.25 price rise
    Average
    £9.56
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £229.50
    Effective monthly cost*
    £9.56
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    Three benefits
    • 5G with all plans
    • Also uses Vodafone's network
    • Wi-Fi and VoLTE calling
    • Three+ Rewards App
    • 99%+ UK coverage
    Three complaints Three received an average of 2 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Three more information
    Close
    Three
    8GB data
    First 3 months £8.00/month
    4-15 months £9.25/month
    16-24 months £10.50/month
    Average £9.56/month
    Contract length 24 months
    Total cost of ownership £229.50
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by Reward Mobile
  • Exclusivei
    Three SIM - 24 month contract
    More Close
    Your monthly cost
    Monthly cost for 3 months(from 6 January 2026)
    £8.00
    Monthly cost for 12 months(from 6 April 2026)
    £9.90£1.90 price rise
    Monthly cost for 9 months(from 6 April 2027)
    £11.80£1.90 price rise
    Average
    £10.38
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £249.00
    Effective monthly cost*
    £10.38
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    Three benefits
    • 5G with all plans
    • Also uses Vodafone's network
    • Wi-Fi and VoLTE calling
    • Three+ Rewards App
    • 99%+ UK coverage
    Three complaints Three received an average of 2 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Three more information
    Close
    Three
    30GB data
    First 3 months £8.00/month
    4-15 months £9.90/month
    16-24 months £11.80/month
    Average £10.38/month
    Contract length 24 months
    Total cost of ownership £249.00
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by Three
  • Three SIM - 12 month contract
    More Close
    Your monthly cost
    Monthly cost for 3 months(from 6 January 2026)
    £9.00
    Monthly cost for 9 months(from 6 April 2026)
    £10.90£1.90 price rise
    Average
    £10.43
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £77.10
    Cashback
    £48.00 (redemption)
    Effective monthly cost*
    £6.43
    *Effective monthly cost is the total cost of ownership divided by the total contract lengthTotal cost of ownership takes into account any cashback offers
    Three benefits
    • 5G with all plans
    • Also uses Vodafone's network
    • Wi-Fi and VoLTE calling
    • Three+ Rewards App
    • 99%+ UK coverage
    Three complaints Three received an average of 2 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Three more information
    Close
    Three
    12GB data
    First 3 months £9.00/month
    4-12 months £10.90/month
    Average £10.43/month
    Contract length 12 months
    Cashback £48.00 (redemption)
    Total cost of ownership £77.10
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Choose a retailer
    • O2
      Fonehouse Open in a new window
    • Metrofone
      Metrofone Open in a new window
    Available from 2 retailers
  • Exclusivei
    Three SIM - 12 month contract
    More Close
    Your monthly cost
    Monthly cost for 3 months(from 6 January 2026)
    £9.00
    Monthly cost for 9 months(from 6 April 2026)
    £10.90£1.90 price rise
    Average
    £10.43
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £125.10
    Effective monthly cost*
    £10.43
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    Three benefits
    • 5G with all plans
    • Also uses Vodafone's network
    • Wi-Fi and VoLTE calling
    • Three+ Rewards App
    • 99%+ UK coverage
    Three complaints Three received an average of 2 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Three more information
    Close
    Three
    60GB data
    First 3 months £9.00/month
    4-12 months £10.90/month
    Average £10.43/month
    Contract length 12 months
    Total cost of ownership £125.10
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by Three
  • Three SIM - 12 month contract
    More Close
    Your monthly cost
    Monthly cost for 3 months(from 6 January 2026)
    £10.00
    Monthly cost for 9 months(from 6 April 2026)
    £11.90£1.90 price rise
    Average
    £11.43
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £89.10
    Cashback
    £48.00 (redemption)
    Effective monthly cost*
    £7.43
    *Effective monthly cost is the total cost of ownership divided by the total contract lengthTotal cost of ownership takes into account any cashback offers
    Three benefits
    • 5G with all plans
    • Also uses Vodafone's network
    • Wi-Fi and VoLTE calling
    • Three+ Rewards App
    • 99%+ UK coverage
    Three complaints Three received an average of 2 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Three more information
    Close
    Three
    30GB data
    First 3 months £10.00/month
    4-12 months £11.90/month
    Average £11.43/month
    Contract length 12 months
    Cashback £48.00 (redemption)
    Total cost of ownership £89.10
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Choose a retailer
    • O2
      Fonehouse Open in a new window
    • Metrofone
      Metrofone Open in a new window
    Available from 2 retailers
  • Exclusivei
    Three SIM - 12 month contract
    More Close
    Your monthly cost
    Monthly cost for 3 months(from 6 January 2026)
    £10.00
    Monthly cost for 9 months(from 6 April 2026)
    £11.90£1.90 price rise
    Average
    £11.43
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £137.10
    Effective monthly cost*
    £11.43
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    Three benefits
    • 5G with all plans
    • Also uses Vodafone's network
    • Wi-Fi and VoLTE calling
    • Three+ Rewards App
    • 99%+ UK coverage
    Three complaints Three received an average of 2 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Three more information
    Close
    Three
    80GB data
    First 3 months £10.00/month
    4-12 months £11.90/month
    Average £11.43/month
    Contract length 12 months
    Total cost of ownership £137.10
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by Three
  • Three SIM - 24 month contract
    More Close
    Your monthly cost
    Monthly cost for 3 months(from 6 January 2026)
    £10.00
    Monthly cost for 12 months(from 6 April 2026)
    £11.90£1.90 price rise
    Monthly cost for 9 months(from 6 April 2027)
    £13.80£1.90 price rise
    Average
    £12.38
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £201.00
    Cashback
    £96.00 (redemption)
    Effective monthly cost*
    £8.38
    *Effective monthly cost is the total cost of ownership divided by the total contract lengthTotal cost of ownership takes into account any cashback offers
    Three benefits
    • 5G with all plans
    • Also uses Vodafone's network
    • Wi-Fi and VoLTE calling
    • Three+ Rewards App
    • 99%+ UK coverage
    Three complaints Three received an average of 2 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Three more information
    Close
    Three
    12GB data
    First 3 months £10.00/month
    4-15 months £11.90/month
    16-24 months £13.80/month
    Average £12.38/month
    Contract length 24 months
    Cashback £96.00 (redemption)
    Total cost of ownership £201.00
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by Fonehouse
  • Exclusivei
    Three SIM - 24 month contract
    More Close
    Your monthly cost
    Monthly cost for 3 months(from 6 January 2026)
    £10.00
    Monthly cost for 12 months(from 6 April 2026)
    £11.90£1.90 price rise
    Monthly cost for 9 months(from 6 April 2027)
    £13.80£1.90 price rise
    Average
    £12.38
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £297.00
    Effective monthly cost*
    £12.38
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    Three benefits
    • 5G with all plans
    • Also uses Vodafone's network
    • Wi-Fi and VoLTE calling
    • Three+ Rewards App
    • 99%+ UK coverage
    Three complaints Three received an average of 2 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Three more information
    Close
    Three
    60GB data
    First 3 months £10.00/month
    4-15 months £11.90/month
    16-24 months £13.80/month
    Average £12.38/month
    Contract length 24 months
    Total cost of ownership £297.00
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by Three
  • Exclusivei
    Three SIM - 12 month contract
    More Close
    Your monthly cost
    Monthly cost for 3 months(from 6 January 2026)
    £12.00
    Monthly cost for 9 months(from 6 April 2026)
    £14.30£2.30 price rise
    Average
    £13.73
    Your cost breakdown
    Total contract length
    12 months
    Total cost of contract
    £164.70
    Effective monthly cost*
    £13.73
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    Three benefits
    • 5G with all plans
    • Also uses Vodafone's network
    • Wi-Fi and VoLTE calling
    • Three+ Rewards App
    • 99%+ UK coverage
    Three complaints Three received an average of 2 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Three more information
    Close
    Three
    120GB data
    First 3 months £12.00/month
    4-12 months £14.30/month
    Average £13.73/month
    Contract length 12 months
    Total cost of ownership £164.70
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by Three
  • Exclusivei
    Three SIM - 24 month contract
    More Close
    Your monthly cost
    Monthly cost for 3 months(from 6 January 2026)
    £12.00
    Monthly cost for 12 months(from 6 April 2026)
    £14.30£2.30 price rise
    Monthly cost for 9 months(from 6 April 2027)
    £16.60£2.30 price rise
    Average
    £14.88
    Your cost breakdown
    Total contract length
    24 months
    Total cost of contract
    £357.00
    Effective monthly cost*
    £14.88
    *Effective monthly cost is the total cost of ownership divided by the total contract length
    Three benefits
    • 5G with all plans
    • Also uses Vodafone's network
    • Wi-Fi and VoLTE calling
    • Three+ Rewards App
    • 99%+ UK coverage
    Three complaints Three received an average of 2 complaints per 100,000 customers between January 2025 and March 2025 in Ofcom's pay monthly mobile complaints
    Three more information
    Close
    Three
    120GB data
    First 3 months £12.00/month
    4-15 months £14.30/month
    16-24 months £16.60/month
    Average £14.88/month
    Contract length 24 months
    Total cost of ownership £357.00
    • Unlimited minutes and texts
    • eSIM available
    • 5G speeds
    See deal
    Sold by Three
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Deals last updated: 2 hours 56 minutes ago
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