Cubot kingkong mini, light & small, works okay as an on the bars route plotter & phone generally. But needs a small powerbank for longer rides. I got one for £2.80 that gives extra 3 hours. Two issues – GPS appears wayward on some tracks – not just a few feet out, but 100’s of yards! I need to take old phone out with me to test if it’s a Cubot fault, or GPS… And sometimes it goes into Andoid recovery mode randomly, never when in use though, but when left in hot van etc. So Cheap, it mostly works, but jury out on GPS for now. Cost £70.