High-capacity prepaid SIM for data‑heavy users who need a simple, all-in-one monthly package with roaming included. It delivers a full month of high-speed data alongside unlimited UK calls and texts.

Three 100GB Preloaded Data Pack SIM - Key highlights

Benefits

• Large 100GB allowance for streaming, browsing, video calls and downloads without daily top-ups.
• One-month validity keeps planning simple — use the full allowance within the month of activation.
• Unlimited UK calls and texts included so voice and messaging are covered without extra charges.
• Roam-ready with inclusive roaming in 71 destinations, reducing surprises on trips abroad.
• 5G Ready at no extra cost so you can access faster mobile network speeds where available.
• Large UK coverage with 99% UK coverage for reliable connectivity across most areas.
• Auto-renew Pay As You Go option for seamless continuity if you prefer not to manually repurchase.
• Three+ Rewards App access for app-based perks and rewards available to users.

Details

• Data: 100GB preloaded on the SIM, valid for one month from activation.
• Calls & Texts: Unlimited minutes and messages within the UK are included.
• Roaming: 12GB inclusive roaming is available across 71 destinations at no extra cost, with allowance subject to roaming terms and a cap of up to 30GB per month where applicable. Roaming is intended for holiday use only; full terms at three.co.uk/go-roam.
• Network: 5G Ready and uses Three’s network with claimed 99% UK coverage.
• Billing: Preloaded Pay As You Go product with auto-renew option available to keep service active without repurchasing.
• Rewards: Includes access to the Three+ Rewards App for exclusive offers and benefits.
• Destinations: Roaming destinations include countries such as the USA, Australia, and EU member states among the 71 covered locations.
• Terms: Standard Three terms and conditions apply; check three.co.uk/go-roam for full roaming rules and any eligibility limits.

This product suits travellers and heavy data users who want a single, prepaid monthly bundle with wide roaming coverage and high-speed network access where available.