📶 O2 UK SIM Only Deals January 2026

Keep your phone, switch to O2 and save with our flexible SIM-only plans on the UK's best network

📱 SIM Only Plans

Flexible 12-month or 24-month contracts with no upfront cost. All plans include EU roaming, WiFi calling, and access to O2 Priority rewards.

Plan Data Minutes & Texts Network Key Features Contract Monthly Price Action
📱
Essential
Light User
1GB
Monthly Data
 Unlimited Minutes
Unlimited Texts 		4G
  • EU Roaming Included
  • WiFi Calling
  • O2 Priority Access
  • O2 Extras
 12 months
No upfront cost
£6/mo
Best for light users
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📶
Standard
Popular Choice
10GB
Monthly Data
 Unlimited Minutes
Unlimited Texts 		5G Ready
  • 5G at no extra cost
  • EU Roaming Included
  • WiFi Calling
  • O2 Priority Access
  • Data Rollover
 12 months
No upfront cost
£12/mo
Great everyday plan
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🚀
Plus
🔥 Best Value
30GB
Monthly Data
 Unlimited Minutes
Unlimited Texts 		5G Ready
  • 5G at no extra cost
  • EU Roaming Included
  • WiFi Calling
  • O2 Priority Access
  • Data Rollover
  • O2 Travel Inclusive
 12 months
No upfront cost
Was £20/mo
£16/mo
Save £48/year
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💎
Premium
Heavy User
100GB
Monthly Data
 Unlimited Minutes
Unlimited Texts 		5G Ready
  • 5G at no extra cost
  • EU Roaming 25GB
  • WiFi Calling
  • O2 Priority Access
  • Data Rollover
  • O2 Travel Bolt On
  • Disney+ 3 months FREE
 24 months
No upfront cost
Was £28/mo
£22/mo
Save £144/2 years
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⚡
Super
⭐ Premium
200GB
Monthly Data
 Unlimited Minutes
Unlimited Texts 		5G Ready
  • 5G at no extra cost
  • EU Roaming 50GB
  • WiFi Calling
  • O2 Priority Access
  • Data Rollover
  • O2 Travel Inclusive
  • Disney+ 6 months FREE
  • Priority Tickets
 24 months
No upfront cost
Was £35/mo
£28/mo
Save £168/2 years
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♾️
Unlimited
🏆 Ultimate Freedom
Unlimited
No Data Limits
 Unlimited Minutes
Unlimited Texts 		5G Ready
  • Truly Unlimited 5G Data
  • EU Roaming 100GB
  • WiFi Calling
  • O2 Priority Access
  • O2 Travel Inclusive
  • Disney+ 12 months FREE
  • Priority Tickets
  • Use as Hotspot
 24 months
No upfront cost
Was £45/mo
£36/mo
Save £216/2 years
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👑
Unlimited Max
👑 Best Experience
Unlimited
Max Speed 5G
 Unlimited Minutes
Unlimited Texts 		5G Ultra
  • Fastest 5G Speeds
  • Global Roaming 100+ countries
  • WiFi Calling
  • O2 Priority VIP Access
  • Disney+ Bundle FREE
  • Amazon Prime 12 months
  • Priority Concert Tickets
  • Unlimited Hotspot
 24 months
No upfront cost
Was £55/mo
£45/mo
Save £240/2 years
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© 2026 All rights reserved. Prices subject to change. Terms & conditions apply.

All SIM Only plans include unlimited UK minutes and texts. 5G available in selected areas with a compatible device.

O2 Priority rewards and offers subject to availability. EU Roaming Fair Usage Policy applies.