| By looking at their map of mobile data cost [0] across the world I understood something that I find annoying in many apps. Whenever there's a big file to download/upload the app will not download it unless I'm connected to a WiFi network. There's often a hidden settings that can disable this but I never understood why WiFi was considered a better choice for big file downloads. Very often my 4G network is faster than the WiFi I have access to and with 100Go of data (for 20€) each month it's basically unlimited. But from the map 100Go would be $1237 in the US ? [0]: https://www.economist.com/sites/default/files/imagecache/640... |
So people were careful with using mobile internet, there were stories about people who forgot to turn off mobile internet and had to pay hundreds extra, or people who used a lot of mobile internet by accident abroad, racking up bills in the thousands. Apps that had bigger downloads would often be on the arse end of complaints about high data rates, so it became a UX pattern to warn or disallow big downloads over mobile internet.
4G / higher bandwidth and government legislation (the latter notably in the EU) finally put a stop on that, only two odd years ago (if that). But, there's still plenty of countries without 4G, good internet backbones, and who still do metered connections. Even wired connections, notably in the US which seems years behind in terms of internet infrastructure in some areas.