Three Mobile launches new unlimited SIM data plan and it beats Sky's price

Consumers on the hunt for a new SIM-only phone contract can find competitive deals at Three Mobile, starting at £22 for unlimited data. The network's deals are cheaper than similar ones from Sky, and rival those of EE and O2, as we round up below.

Three Mobile's 'Unlimited 24-month Lite' is priced at £22 per month, rising to £23.50 from April 2026, and then to £25 in April 2027. It includes perks such as 5G readiness at no additional cost, unlimited calls and texts, and Three+ rewards. For those willing to spend a bit more, there's the £24 per month option. This includes all the aforementioned extras, plus roaming data and Paramount+ (prices increase to £25.50 from April 2026 and £27 from April 2027).

In contrast, Sky Mobile's unlimited SIM-only plan costs £29 per month. Customers also have the option of an e-SIM, enabling immediate activation of their plan without waiting for a physical SIM card.

Over at EE, the Unlimited Essential SIM-only plan is currently discounted to £22 from £35. It includes unlimited minutes, texts and data, the ability to gift data to family and friends, and maximum speeds of 100Mbps, reports The Mirror.

For a more premium package, customers can opt for the Unlimited Full Works for iPhone SIM-only contract (£31 a month, down from £48). This includes free EU roaming and beyond, unlimited data for a watch, and priority coverage in busy areas.

Additional benefits include uncapped speeds and inclusive extras like Apple One or TNT Sports. Meanwhile, O2's 24-month Unlimited Data SIM-only contract also starts at £22 per month.

Meanwhile, O2's 24-month Unlimited Data SIM-only contractalso begins at £22, per month. Consumers who opt for this can enjoy roaming freely in the EU (up to 25GB), choose three months of Disney+ Standard, Amazon Prime, or more. They also have an option to upgrade to a new phone and plan after three months.

For those curious about Three Mobile's reputation, Trustpilot hosts a plethora of reviews on their service and dependability. One customer recounted their store visit, stating: "I needed to replace a lost iPhone quickly - Lisa in the Wigan store was really helpful and sorted me out very efficiently."

Another remarked: "This store staff has always delivered excellent service."

However, a different user pointed out network issues: "Their network is okay, but then you can't even send any Whatsapp messages when you're in Glasgow city centre. Please work on your internet connectivity in the city centre."

Broadband services also received comments, with one user sharing: "Great service and cheap. Very easy to plug in the Broadband modem and use. Internet is quick. Also, Sonu was great at problem-solving when I needed to call customer service."

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