The answer to this one will be different for everybody. If you only really carry your phone for emergencies, then go for the minimum amount of data and save a packet. If you like to scroll through Facebook on the bus and stream Spotify, you’ll need a bit more. And if you frequently stream videos and download masses of files, then 30GB or even unlimited may be worth paying extra for.

As well as checking your phone to see how much you tend to use a month at the moment, the below guidelines will also help you pick out the perfect plan:

1GB Some networks offer 500MB plans, but realistically we think you should get at least 1GB. It won’t be much more expensive (if at all) and will afford you a little bit of Google Mapping, WhatsApping and emailing when you need them.

2-3GB If you like to scroll through your social media feeds and emails while out and about without fear of extra cash to pay on your monthly bill, then up your data.

4-8GB The likes of Spotify and Apple Music have promised us all our favourite tunes wherever we roam. Kit yourself out with a bit more data and you’ll have plenty for music streaming and the occasional video, too.

10-16GB This should be more than enough for most users. Loads of data for streaming music, downloading podcasts and enjoying social media videos. Because there’s no such thing as too many cats falling into bins.

20-30GB Big data for the big phone user. Perfect for watching Netflix videos, downloading content and streaming loads of music. And these plans often have extra freebies thrown in, too.

Unlimited The Three network is still the only one of the ‘Big 4’ to offer unlimited data. It can be really pricey though, so think long and hard whether you really need it.