I had this problem for a few years back in the mid-10s - any time it saw something like "Virgin WIFI", my phone would assume I was in Manchester, even if I was

I had this problem for a few years back in the mid-10s - any time it saw something like "Virgin WIFI", my phone would assume I was in Manchester, even if I was in London / anywhere Virgin trains go, leading to huge jumps in location[1]. [1] which annoys me - a smartphone should be able to figure out that I have not just travelled 200 miles in 2 seconds and filter that out. This is still a (smaller) problem - my current phone often thinks I've jumped 5 miles for a minute and then back.