Watching TV shows or movies on Netflix uses about 1 GB of data per hour for each stream of standard definition video, and up to 3 GB per hour for each stream of HD video If watching SKY GO - up to 700MB to watch a 90-minute match if in HD over 1GB Now let’s break this down further into looking at roughly how much mobile data some popular apps actually use. This megabyte breakdown is important because it’s a small unit of measurement which is more likely to be used when talking about how much data is used for certain services. Let’s take some simple figures to start with - a package like Tesco Mobile’s €30 bill pay plan gives you great value in calls and texts and 15 gigabytes (GB) of mobile data every month.ġ5 GIGABYTES (GB) = 15,000 MEGABYTES (MB)ġ5,000 MEGABYTES (MB) = 15,000,000 KILOBYTES (KB) The biggest question people often have is what their mobile data limit is and more importantly, what they can actually do with it. At Tesco Mobile, we’re all about making thing less complicated and that includes breaking down the jargon when it comes to mobile data. Mobile data can be a bit intimidating, especially at first as you get to grips with terms like gigabytes and download speed.