Guys, can it be used in the UK ?

Google Maps downloaded offline maps are about 2G, which are very convenient to use. I used Google navigation for several days in the Scottish Highlands, and it was still useful even without signals.

Google's data is more comprehensive and up-to-date. It's best to choose satellite maps, which are very intuitive and much better than regular maps. Google usually has advanced warning, so if you're not used to it, it's easy to change lanes or turn too early, which can be very troublesome. If you use satellite maps, you can see exactly which lane to change to.