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10 Best data sim card preloaded 24 months o2

Welcome to our top 10 product reviews for data sim card preloaded 24 months o2. We've scoured the market to bring you the best of the best, with products ranging from a 7.1 score up to a whopping 9.8 score!

Updated November 2025
2
O2 Unlimited 5G Data SIM. Perfect for unlocked Phones, Routers, Tablets and Wifi Dongles - Activate anytime when you receive the SIM - Choose your Data Duration (24 Months)
9.6
Excellent

O2 Unlimited 5G Data SIM. Perfect for unlocked Phones, Routers, Tablets and Wifi Dongles - Activate anytime when you receive the SIM - Choose your Data Duration (24 Months)

Main Highlights

ANYTIME ACTIVATION - Activate your Sim by scanning the supplied QR Code and enjoy 24 months of 4G & 5G data. We will activate your sim within 1 business day.

DATA RENEWAL OPTION - Extend your data usage beyond the initial term with the option to renew at the end, ensuring continuous connectivity without interruption.

UNIVERSAL DEVICE COMPATIBILITY - Optimised for Smartphones, Tablets, Laptops, Mobile Wi-Fi Dongles, Routers, IoT Devices, Smart Meters, Vehicles, Drones, GPS Trackers, Smart Home Devices & Security Cameras.

DEDICATED CUSTOMER SUPPORT - For any connection queries, our customer support team at Scancom is ready to assist you. Please contact support@scancom.co.uk

ZERO CONTRACTS - Benefit from our data services without the burden of contracts or recurring fees.

VERSATILE TRIPLE CUT SIM - Our all-in-one sim card fits any Standard, Micro, and Nano size device.

EXCLUSIVE UK DATA-ONLY - Tailored for data usage with a 600GB/month fair use UK-only data allowance. This Sim card does not support calls, texts, or roaming.

*Breach of fair usage policy: Data usage where users regularly tether to 12 or more devices or have used 600GB of data twice within a 6-month period. This includes fraudulent, abusive, illegal, nuisance, or outside normal commercial practice usage.

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9.6
Excellent
amazon

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bestBest value
3
Three Unlimited Data SIM - Uncapped 5G - Preloaded MONTHLY Until October 2027 - Plug & Play for Routers & Phones - Access to Three & Vodafone - Connects to the Strongest Signal available
9.5
Excellent

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Three Unlimited Data SIM - Uncapped 5G - Preloaded MONTHLY Until October 2027 - Plug & Play for Routers & Phones - Access to Three & Vodafone - Connects to the Strongest Signal available

Main Highlights

DUAL NETWORK - Automatic access to both Three & Vodafone networks. Disclaimer - Coverage provided via MOCN, a multi-operator core network, in selected geographical areas. Please check coverage availability before purchase.

MONTHLY DATA RENEWAL - Unlimited Data until 8th August 2026 for a one-off payment.

EFFORTLESS PLUG & PLAY – Enjoy seamless 4G and 5G connectivity with no initial setup required.

UNIVERSAL DEVICE COMPATIBILITY - Optimised for Smartphones, Tablets, Laptops, Mobile Wi-Fi Dongles, Routers, IoT Devices, Smart Meters, Vehicles, Drones, GPS Trackers, Smart Home Devices & Security Cameras.

DEDICATED SUPPORT - Gain peace of mind with our dedicated business customer support, ready to assist you whenever needed. Please reach us at support@scancom.co.uk with the sim number and order reference.

ZERO CONTRACTS - Benefit from our data services without the burden of contracts or recurring fees.

VERSATILE TRIPLE CUT SIM - Our all-in-one sim card fits any Standard, Micro, and Nano size device.

EXCLUSIVE UK DATA-ONLY - This Sim card does not support calls, texts, or roaming. There is a fair use policy of 1000GB per month.

Sims cannot be ported/transferred, promotions are non-renewable, and support for pre-registered sims is available exclusively via email.

This item is tailored for business customers. If your order is not in the name of company / non-profit registered at companies house or an Amazon business customer, by purchasing, you affirm your status as a self-employed individual.

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9.5
Excellent
amazon

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We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.

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Products Considered

62

Consumers Consulted

24

Hours Researched

Why Trust One Clear Winner?

One Clear Winner spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We only make money if you purchase a product through our links, and all opinions about the products are our own.

About One Clear Winner

How We Tested

We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.

Learn more about testing

51

Products Considered

62

Consumers Consulted

24

Hours Researched