Mars 2022 —

Three sim only: everything you need to know

Hey there! Looking to join the Three community? You are at the right place! Find out everything you need to know about Three sim only deals, all its services, and how Monisnap (ex Allo) can make your life easier!

Discover Three sim only deals and top up in a minute!


Three sim only: top up
Three sim only

Three UK (legally Hutchison 3G UK Limited) is a British telecommunications and internet service provider currently based in Reading, England. Three is the fourth-largest mobile network operator in the United Kingdom, with 13.3 million subscribers as of July 2020 and its network today covers 99% of the UK population.

The company launched on 3 March 2003 as the United Kingdom's first commercial 100% 3G network. It provides 3G, 4G and 5G (in certain areas) services through its own network infrastructure.

Three launched 5G in August 2019 and also has the UK’s leading 5G spectrum holdings with more than the rest of the industry combined. Three is the only operator able to meet the International Telecoms Union (ITU) 2020 standard for full 5G services.

Three was voted the Best Network for Data at the Mobile Choice Consumer Awards, as well as Best Network for Roaming by uSwitch, and the Best High Street Retailer at the Mobile Industry Awards.

Three UK is part of the CK Hutchison Holdings Ltd group of companies which has mobile operations in 11 countries. Three employs more than 4,800 people across their offices in Reading, Glasgow and their 311 retail stores.

Three sim only: the best offers

A SIM Only contract is just a SIM card with all the data, minutes and texts you need. You can choose between Pay Monthly or Pay As You Go plan, whichever suits you best. Three deals depend on the country and the plan you choose. The price will be higher or lower depending on the deals contained in the package.

You get extra flexibility with Pay Monthly, because you can join Three on a 1, 12 or 24-month plan. And if you choose Pay As You Go there's no upfront cost.

Discover the most popular Three sim only deals:

List of Three sim only deals available

Complete table: price, data, minutes and texts

Price per month£10.00 during 6 months ; then £20.00 per month£16.00£5.00 during 6 months ; then £10.00 per month£6.00£14.00
MinutesUnlimitedUnlimitedUnlimited200 minutesUnlimited

Three sim only tariffs

Three sim only tariffs depends on the plan you choose! The more you get credit and data, the higher is the price. See Three sim only deals below!

Three sim only: find the best plan
Three sim only

How can I activate my Three SIM?

Just received your new Three SIM and need help to activate it? If you bought a Three phone and SIM from Three, it should be ready to use as soon as you turn on your new phone. If you’re using a non-Three phone, follow these easy steps to activate your new Three SIM card:

  • First, make sure it is 3G or 4G compatible and that it's unlocked.
  • You need your phone’s battery to be fully charged.
  • Insert your new Three SIM card into your phone and switch it on.
  • You’ll receive a first text to let you know your sim activation started. Make sure you keep your phone switched on while you’re connected to the Three network. It usually takes about 2 hours but during busy periods it may take longer.
  • When it’s nearly finished, you’ll receive another text asking you to turn your phone off and on again.

Your SIM will now be activated and a text will be send to you by Three as a confirmation.

How can I top up my Three SIM?

There are lots of easy ways to top-up your Three sim!

You can do it online with the Three app! You just need to register a card.

  • Open the Three app and go to Allowance.
  • Tap top-up, or you can choose an Add-on instead.
  • Choose your top-up amount or an Add-on, then follow the instructions to pay.

You can also go to My3 to top-up. You might need to register if you don't have an account yet. To register a card, go to Manage cards in the Top-up section and click Add card.

  • Go to Top-up now.
  • To top-up, select Top-up with your card or a voucher.
  • Scroll down to find the top-up amount you want.
  • Confirm your address and enter your payment details – then you're all good to go!

If you just want to top-up without registering a card or logging in, go to the Three Top-up page and enter your details, then choose Credit/debit card or Voucher and follow the instructions.

If you're a phone customer, you can call 444 free from your Three phone to top-up over the phone.

An easiest and fastest way to top up your Three sim is to use Monisnap! With Monisnap, top up Three credit and data in 1 minute!

Need to top up your phone?

Monisnap, top up quickly and easily

Top up in 1 minute!

Three: top up your phone in 1mn with Monisnap (ex Allo)

Want to buy a phone top-up now? Monisnap is the easiest and cheapest way to top up your credit in a minute!

With Monisnap, you can buy credit top up from many operators including Three top up, with the most competitive rates on the market! Monisnap is here to make your work easier and to allow you to benefit as simply as possible from credit or internet top-ups.

It is quite simple. Either on the website of Monisnap or on the mobile application:

  • Enter the country and phone number you want to top up
  • Choose the Three mobile credit or data top-up you want
  • Pay on our secure website

You are all set! The beneficiary's mobile will then be credited in one of the following ways depending on the top-up purchased:

  • If it is an "Instant top-up", it will be automatically credited to the recipient's mobile, who will receive a confirmation SMS
  • If it is a "PIN top-up", you will receive a PIN code by email and on your customer area with the instructions to follow to top up the mobile

The type of recharge (instant or PIN) is indicated in the description of each recharge.

Get your top up right now!

🧐 What is Three mobile?

Three is a British mobile and Internet operator, based in England.

👀 What are the tariffs for a Three sim only deal?

Three sim only deals prices depend on the plan itself. Three provides plan but also bundles for every tastes and every costs! Discover in the article the most known of them!

🙌 How can I activate my Three sim?

Find in the article below how to activate your Three sim.

👌 How to top up my Three UK sim?

With Monisnap (ex Allo), you can top up in 1mn a SIM and for free!

Yannis Rahal

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