Read this and started downloading update
After it forced me to connect to a WiFi. I have unlimited data and the Wifis here are not great. No, 4G is not perfect either but it doesn't disconnect me if it feels I haven't been paying attention for too long.
I have a couple of other apps with this annoying habit. Please give me an option to do everything on my SIM. Warn me, if you like, that phone companies can charge me for that (they don't).
After this has downloaded its 106MB and rebooted, I will have to remember to turn off the WiFi so that things still work when I actually want them to! I averaged over a GB a day last month. I don't think that I need them to save me 0.1 of one in this way.