Who had the bright idea to have "Wi-Fi Assist" enabled by default?
Got a 90% cap usage warning for the month, just over half way through the month (my usage month goes from the 9th to the 8th). My cap is 60GB for the 3 phones on the family plan!!!
Evidently, the "Wi-Fi Assist" didn't think my houses wi-fi was worthy enough in certain locations of the house, and automatically dumped my kids youtube/netflix/crunchyroll usage to cellular.
So, little tip, if you don't have unlimited data, you might want to turn off "Wi-Fi Assist" immediately.