4G is the next step up from 3G, giving you mobile internet speeds up to five times faster than before. In fact, even the average home broadband speed can't match 4G. That means you can stream movies in HD without buffering, play online games in real time and upload photos to Facebook instantly.

The 4G network we use already covers huge parts of the country and by the end of the year we're aiming to cover 98% of the population, so you'll be able to experience faster internet almost anywhere.

If you do find yourself somewhere that we haven't brought 4G to yet, don't worry, you'll still have access to our Advanced 3G service, the fastest 3G connection in the UK.

Our network uses the fastest version of 3G ever. Known as Advanced 3G, it gives impressive speeds that'll let you download your favourite movies in a matter of minutes, and make smooth, HD video calls over Skype or Facetime.

The great thing about Advanced 3G is that it already covers 98% of the population. So wherever you go with your iD plan, you'll get fast and reliable internet.

We've just added Belgium, Croatia, Cyprus, Finland, Lithuania, Slovakia and Slovenia.

This is in addition to the existing list of countries:

Australia, Austria, Bulgaria, Czech Republic, Denmark, Estonia, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Luxembourg, Malta, Netherlands, Portugal, Poland, Romania, Spain, Sweden and USA.

So when you're in any one of these countries, you'll be able to use your data, and make calls or send texts to UK mobile numbers and landlines.

Calls to foreign numbers (even when you're in the same country) aren't included.

These will be available to buy through the iD App and My Account. You'll be able to use them to call and text UK numbers, or surf the web.
Just add what you need as you need it.

With Data Rollover, you automatically roll over your unused data to the next month, and then it gets used first. Here's an example of how it works.

Your monthly inclusive allowance of data, listed in GB (gigabytes).

A free feature that lets you roll over unused data to the next month.

Your monthly inclusive allowance of texts you can send.

Your monthly inclusive allowance of call time, listed in minutes.

An adjustable, pre-set £5 cap that lets you control your monthly bill limits.

Roaming lets you use data, and call or text the UK at no extra cost, in 29 countries.

SIM Only is ideal for customers with phones. Plans available from 1-12 months.

This is a 30 day rolling plan. It will refresh automatically every month, unless the customer asks for it to finish.

This plan expires 12 months after the start date. Customers can then renew, or choose something else.

This plan expires 24 months after the start date. Customers can then renew, or choose something else.

Add-ons are extra bundles of minutes, texts or data that you can buy in addition to your normal contract.