a week ago, I noticed it was eating up 100 mb per message so I turned off iMessage, updated my phone to the latest iOS release and waited for my data plan to roll over to the next period (because this bug ate up most of it). Yesterday I tested it again and it’s now eating 10mb per message, which is better, but still wayyyyy too much data.

And yeah, just plain text. The word “Test” as an iMessage caused a consumption of 7mb of “messaging services” data. Something definitely wrong.