This subject has many topics that can be discussed / debated. Nice one Griff Grof for bringing up

I'll pick one point made for the moment to explain how I use / get around, and that is this one brought up by walktall:
I have a 250mb per month included with my basic phone plan. Since the beginning of the year when I got the phone I have not used more than 100mb per month, and so have not paid any extra. How I have got around this is two fold, but both by using the wifi. When I am out in places like Tesco's for example, I connect to their free wifi. For the times I am not in the range of such free wifi, because I have BT broadband I can tap into free wifi spots all over the country (and the world apparently), and so use this to check on new caches and check email notifications. The BT wifi hotspots are extensive and I have been surprised where I have picked up a signal, for example when I placed the Ciren Movable Cache in the farmland behind our house yesterday I was connected where I hid it which was over 500' from the nearest building.

My issue is £10 a month is toooo much, I can't justify that cost for something I would use effectively just for geocaching and the odd (very odd) need to make a phone call. It would also need to be Windows based mobile, as Memory Map on Android is no where near as good

I do make use of wifi hotspots, which is great. I remember being in Letterkenny logging a TB to make sure the history stayed correct, as I was on holiday for another six days after dropping off the TB