Three Mobile SIM Only Deals: Affordable Plans for Data, Calls & Texts

Looking for a SIM only deal with generous data allowances at affordable prices? Three Mobile offers some of the UK’s best SIM only plans, ideal for Netflix bingers, Spotify streamers, and avid gamers alike. Whether you’re after unlimited data or a low-cost plan, Three provides flexible options on its fast 5G-ready network.

Why Choose a Three SIM Only Deal?

Three Mobile is a popular choice because of:

• Extensive Coverage: Strong 3G, 4G, and a growing 5G network across the UK.
• Unlimited Calls and Texts: All SIM plans come with unlimited minutes and texts.
• Competitive Pricing: Often cheaper than other main providers like O2, Vodafone, and EE.
• Tethering & Hotspot: Use your mobile data to connect other devices.
• Wi-Fi Calling: Make calls and send texts over Wi-Fi in areas with no signal.
• Three+ Rewards: Exclusive perks and offers for Three customers.

Compare Three SIM Only Plans

Three offers a range of SIM only plans with varying data allowances and contract lengths. You can choose from 30-day rolling plans or cheaper 12-month contracts depending on your needs. Whether you want unlimited data or a low data plan for light use, Three has flexible options.

Frequently Asked Questions About Three SIM Only Deals

Is a SIM only deal with Three cheaper than a phone contract?

Yes, SIM only deals are generally cheaper because you’re not paying off the cost of a new handset. If you already have a phone you like, a Three SIM only plan can save you money compared to a contract that bundles a phone and SIM.

Can I keep my number when switching to Three?

Absolutely. You can keep your current mobile number by requesting a PAC (Porting Authorisation Code) from your existing provider and giving it to Three. This makes switching quick and hassle-free.

Do I need to unlock my phone to use a Three SIM?

Yes, your phone must be unlocked to accept a SIM from Three. You can check by inserting a SIM from a different network. If it doesn’t work, contact your current provider to unlock your device.

How much data do I need in a Three SIM only deal?

This depends on your usage. Light users who mainly message and browse social media may be fine with 3-10GB. Heavy users streaming Netflix or gaming might prefer 80GB or even unlimited data plans.

Are there any SIM only deals with no credit check?

Three requires a credit check for Pay Monthly plans. If you have bad credit, you can use Three’s Pay As You Go SIMs, which don’t require credit approval.

What’s the difference between 1-month and 12-month SIM only plans?

12-month contracts are usually cheaper per month but require you to commit for a year. 1-month rolling plans offer flexibility and can be cancelled anytime without penalty.

How do I cancel a SIM only plan with Three?

If you have a rolling monthly plan, you can cancel anytime and keep your allowance until the end of your billing cycle. For 12-month contracts, cancelling early may result in an exit fee.

Does Three offer unlimited data SIM only plans?

Yes, Three offers unlimited data plans which allow you to use as much mobile data as you want. However, unlimited plans tend to cost more, so check your usage to avoid overpaying.

Can I use my Three SIM for tethering/hotspot?

Yes, all Three SIM only plans support tethering, letting you share your mobile data with other devices like tablets or laptops.

Do Three SIM only plans come with 5G?

Yes, all current Three SIM only deals are 5G ready. You just need a compatible 5G phone to take advantage of faster network speeds.

What is a PAC code and how do I get one to switch to Three?

A PAC code allows you to transfer your mobile number from your current network to Three. You can request it by texting your current provider or through their website. Once you have the code, provide it to Three to complete the switch.

What networks use Three’s coverage?

Three operates its own infrastructure, but some MVNOs and virtual networks may use Three’s network for coverage.

Are there family or multi-SIM discounts on Three?

Three offers multiple SIM plans for families or multiple devices, but specific discounts vary. Check Three’s website or customer service for the latest deals.

Can I use a Three SIM abroad?

Three no longer includes roaming as part of most plans. You can use your plan abroad under their Go Roam service for £2/day in Europe or £5/day in other destinations.

Are SIM only plans on Three suitable for bad credit?

Pay Monthly SIM plans require credit checks, so if you have bad credit, consider Pay As You Go options with Three or other providers.

Three-Specific Questions

What is Go Roam on Three and how much does it cost?

Go Roam allows you to use your plan abroad. It costs £2 per day in Europe and £5 per day in other international destinations to unlock your allowance while roaming.

What is the difference between Three Advanced and Essential plans?

Three Advanced plans typically offer higher data allowances and extra perks like faster speeds or data rollover, whereas Essential plans are more budget-friendly with basic features.

Is the Three+ rewards app worth it?

Yes, Three+ rewards give you exclusive discounts, cashback offers, and competitions for Three customers, adding extra value to your SIM plan.

Does Three have data speed caps on its cheaper plans?

Some lower-cost Three plans may have speed limits to prioritise higher-paying customers. Check individual plan details before purchasing.

How good is Three’s coverage and network speed in the UK?

Three has strong 3G and 4G coverage, with 5G rapidly expanding. Speeds are good but generally slightly behind EE and Vodafone.

How do Three’s SIM only plans compare to SMARTY or iD Mobile?

Three offers more extensive 5G coverage and perks like Three+ rewards, while SMARTY and iD Mobile often compete on lower prices and flexible plans.

Does Three support Wi-Fi Calling and VoLTE?

Yes, Three supports Wi-Fi Calling and VoLTE, improving call quality, especially in low signal areas.

Is Three good for gaming and streaming on mobile data?

With generous data and decent speeds, Three is a solid choice for streaming and gaming on mobile, though heavy users may prefer unlimited plans.

Can I get eSIM with Three for my phone or smartwatch?

Currently, Three supports eSIM on compatible devices, allowing you to activate a SIM without a physical card.

Are Three SIM only deals good for tourists or short stays in the UK?

Three’s flexible 30-day rolling plans make it suitable for tourists who need a UK SIM without a long contract.

How do I top up or manage my Three plan online or via app?

You can manage your account, top up, or change plans through the Three website or the Three+ app available on iOS and Android.

Is there a student discount or NHS discount on Three SIMs?

Three occasionally offers special discounts or perks for students and NHS workers. Check Olimit for promotions on current offers.