Oooh, just thought of the last time I went out 'caching. I was going along the Itchen route into Winchester. There was one up St Catherines Hill. I was on PAYG and had used my monthly data, but had managed to store a list in the Geocaching app and if you were patient enough, the GPS would roughly still work.
Up SCH I went. Can't remember the exact amount, but I counted the steps up and it was in the 300s. GPS patchy at the top, but I'd read the clue and checked a few places using Cache-Fu at the little glade at the summit. Nothing around. Checked app and I was about 50m out.
Headed to a clump, and sure enough there was a box hidden under some leaves and twigs.
Empty M&S sushi box.
Cache was about 20m in the opposite direction.