Extremely similar to my usage except all my texts end up as data because I use Google Voice. I find it incomprehensibly difficult to understand how someone can break 2GB a month in data unless they're doing torrents on their cell plan.
ONLY time I ever exceeded 2GB in a month was when I had to tether my phone due to an internet outage at home. So I pretty much assume that's the case when someone complains about being throttled.
i find it interesting that you find using more than 2GB is that hard, if you dont watch video at all then you're the avg Joe user who uses a smartphone for email and the odd facebook,, this is how mobile operators want you to use your phone as if a a lot of people in your area (over 250-1000 depending if its 3G or 4G(real 4G not fake) start using data in a more constant manner mobile data just grinds to a halt even voice and text start to fail
youtube is the main one in 720/1080p it can use 1GB an hour or 2 (if HD streaming is enabled in the app i believe its off by default, its capped at 480p which will still use over 200-500mb an hour)
the Wifi assist should never been enabled by default unless you understand the repercussions of enabling it, as Apple stupidly still lacks a Basic monthly data monitor (unless you Pay for a data monitor app as i only found DataMan Pro/Next to be reliable but its like £4 for it) the phone should have a Monthly data monitor like android has for very long time (at least its the customers fault for not turning the data monitor on there phone then)
HTC and samsung your phone gets a Page full of warning when you turn it on Smart Wifi (as smart wifi can be worse than having roaming switched on as people are finding out)
apple do lack a number of fail to display persistent warnings, turning on Data Roaming is only displayed once when you enable it, but EU data roaming is displayed every single time you enable it, Wifi assist is enabled by default and does not warn you when you re enable it that you Will incur data Usage or charges by using this feature (same for MMS and texting short code numbers that might be premium rate services)
Wifi assist only benefits the mobile operator (until the user is aware of it then its the users fault for not turning Wifi Assist off or using a data monitor or both)
i have a True unlimited data plan with 3UK so it would not affect me personally as it would work As intended as i have a plan that has no charges as i cant go over my data allowance as i don't have one,, well i do but its 1000GB and i find it hard pressed to get it past 20GB when i am trying passively (passively as in not turning Wifi on at home and friends), sure if i really tryed i can use past 100GB
but Apple should Not be assuming that everyone has Unlimited data and enabling a feature that can silently switch to 3G or 4G,, as it can do this when your say watching a video, i had some people with 1-2GB data plans and only using less than 500MB a month and only watch videos when at home and wiping their data allowance out in a week after updating to IOS 9 as they was using it at the low signal range of there wireless network as shown on the video on that website i assume this news linked to