Suggestion: Turn on "Require WiFi when downloading" by default

[Whoever4976]

I was recently quite annoyed when the app used up my entire mobile data quota for the month in a singular day while attempting to finish a 44 GB download in the background which i had started a couple of hours earlier while still inside my home WiFi-network.
I know it is not a written rule to design mobile apps with safeguards against excessive data usage but i do feel like this is something that most users expect from any app they install on their phone. I only noticed the relevant setting afterwards which, by default, allows for downloads of any(!) size using mobile data.

I know that this is also a user error on my part because i haven't checked the relevant setting to be sure, but quite frankly, it just didn't cross my mind that any modern app would allow for such behaviour and i don't think that i am in the minority with this assumption.

Luckily i was using a Prepaid SIM card and the cost was limited to a few euros and my quota just ran out. But if i had been using another contract, downloading 44GB on mobile data could have been quite an expensive mistake which could have been avoided if i checked the setting beforehand or if the app had, in my opinion, better defaults

So i suggest that, at the very least, the setting "Require WiFi when downloading" is turned on by default. An additional feature could be a prompt which appears when a download is pending but no wifi is connected. Something like "No Wifi connected. Do you want to use mobile data to continue the download anyway?"