Asshole cellphone companies ( I use AT&T ) want you to burn through your monthly data limit, so they set as default the auto-update of apps feature. On my LG phone, I could NOT figure out how to turn this feature off. (I have multiple university degrees and have a CPA certification.) Here is the link that walks you through how to shut that shit off.
Even with these instructions I had to poke and probe to get to all the settings. ALSO REMEMBER to click the setting that NOTIFIES YOU WHENEVER an app updates.
Fuck these cellphone companies and their stupid games.