There’s a 12GB limit when roaming, but you can remove this cap by purchasing a Data Passport add-on. For Smartwatches: lets you select a monthly Device Plan Credit Agreement (over 3-36 months) with a monthly Connectivity Plan. Watch Plans over 12 months require a 24 month Connectivity Plan. You can pay off your Device Plan early, and if you do, you can keep your Connectivity Plan on a 30-day contract or leave. If your Connectivity Plan ends, the Device Plan is still payable (either in full or monthly). Watch Plans require a Vodafone pay monthly airtime plan and a Connectivity Plan (via Vodafone OneNumber) Three have a traffic management system in place called TrafficSense, which is designed to ensure all customers get “the best possible experience” in all circumstances. As the name suggests, Unlimited data SIMs give you unlimited access to the internet on your mobile device. That means you’ll never run out of data to surf the web, browse social media and stream content. Unlimited data also means you’ll never have to deal with surprise charges in your bills.

There are no data usage limits on Three unlimited plans in the UK, so you can use as much data as like without having to worry about running out of data or unexpected bills. That applies even when tetheringover a personal hotspot.

Roaming: using your home data plan to roam in Zone A is included in all of our Pay Monthly plans. For roaming in other destinations, charges will apply depending on which plan you are on. Get your service from a discount carrier, and you run the risk that your speeds will be slowed in favor of other customers on the parent carrier's network. Visible guarantees customers who sign up for its Visible Plus plan 50GB of premium data free of throttling. Xfinity Mobile slows speeds after you use 20GB of data on its standard unlimited plan, but under the Plus and Premium tiers, those caps rise to 30GB and 50GB, respectively. Mint now caps its unlimited data plan at 40GB — it used to be 35GB — while Tello's 25GB cap is the lowest of the plans we've included here. The two terms are still sometimes used interchangeably. Whichever term is used, you can rest assured that on Three you will get truly unlimited data with no usage limits or speed restrictions in the UK. Why choose Three? No usage limits SIM offers: Discount applied to monthly price for first 24 months. After 24 months discount is removed. Further terms apply, see ee.co.uk/terms.

Stay Connected Data: If you have a capped data allowance (i.e. not an unlimited data plan) once you have used up your monthly data allowance your speed will be capped at 0.5Mbps. You will regain access to our fastest speeds upon (1) renewal of your monthly plan allowance, (2) by buying one of our data add-ons, or (3) If you are gifted data by someone else in your family account. Once the data add-on or gifted data runs out, you will return to the capped speed until your monthly plan allowance has renewed. Not available with No Frills plans.

All Three unlimited data plans are 5G-ready at no extra cost. So those with a 5G-ready device who are in a 5G coverage area will be able to access 5G without having to pay any extra.

That depends. While you do technically get unlimited data on all of these plans, many of them will impose a restriction somewhere in the plan to limit you slightly.

Features of Unlimited Data plans

So if you use a lot of data or want the freedom to do so, then an unlimited data plan is likely to be a great fit for you. What is All-You-Can-Eat data? This usage allowance for data abroad should refresh each month like your allowance in the UK would. The exception to this is in Go Roam Around the World destinations, where streaming is provided at standard definition, tethering isn’t included, and P2P and VPN might be slowed. Though you can avoid these restrictions by buying a Data Passport add-on. Unlimited data plans on Three And O2 is so far one of the only major UK networks that hasn’t reintroduced roaming charges in the EU. So you’ll be able to use your O2 data while travelling to EU countries. Smarty