(quick note, my 6s+ got fixed by itself regarding that headphone issue. i guess it was really a matter of moisture drying out)
Re: iPhone 6s Smart Battery Case.
You know, I was just seeing one of those one month later videos of it and the reviewer pointed out what annoyed him about the case but still that he liked it and wants to keep it. Way of missing the point... obviously the case does many things right and thats exactly why its a good user experience and why in the end he wants to keep it. The things he criticises are the things Apple had to do make the case better than all the other ones.
IMO, theres ONE legit bad thing about the case. The recessed headphone jack.
Hunchback: why would you want to add bulk and weight on purpose? Its minimalistic how it should be.
Inside LED: Its a nice feature that lets you know the status of your case's charging if youre charging it by itself, so you cant check it from the phones software. When its plugged to the phone, you check it from iOS, just like you check your own phones battery status.
No on/off switch. You know, people dont really think this one through. Why would you keep your phone in a bulky case all the time when youre only use it for reserve battery, which you have to manually turn on? It doesnt make any ounce of sense... a modern batterys lifespan is dictated mainly by the charging cycles it goes through. And you want your phones battery to keep cycling while actually saving your cases battery to the barely minimum usage? What?
Basically while the Smart Battery Case is on, its not that your phones battery is constantly charging. Its that your phone is constantly plugged in and running on external power. That will save it a lot of cycles. Instead people say they wanna run the phones battery completely run out first then charge it again, and then again at night. Its dumb... the guy complained about this very thing exactly. That "your battery is being charged all time which is not good for it"... and thats just a very uninformed thing to say.
And then you have the small added bonus of knowing that when your battery case has fulfilled its utility for the day, keeping your phone plugged in for as long as possible, you can take it out until the end of the day, because youre not getting any more juice out of it. You used your accessory correctly, and saved your phone the best you could.
I dont have a regular sized 6 or 6s so I cant get it, or have a need for it, but I have no doubt thats the case I would get if I had to. And unfortunately, would also get a headphone jack adapter, which to my eyes is the main or only drawback of that case.