A:AnswerDoes it have the fingerprint sensor? Yes.
Is the fingerprint sensor activated on US version of the phone? No.
Can you flash a different region ROM to activate the fingerprint sensor? Yes.
Is it hard to do so? Kind of.
Will it void my warranty? Maybe.
A:AnswerIt's unlocked for any network but make sure its frequencies are compatible with those of the service provider you will be using. Being unlocked and being compatible are not the same thing. I use mine on T-Mobile (USA).
A:AnswerYes, a charging adapter and cord are both provided in the box. Many standard USB-C chargers (such as the Targus USB-C Travel adapter, and the one provided with the Lumia 950/950 XL) are also capable of charging this phone.
A:AnswerThe battery is not consumer replaceable. I have not looked into a water resistant case. Sorry. I had Z3 compact previously and never needed water resistance. Sony's new xz1 compact is water resistant.
A:AnswerMost smart phone can act as a WiFi hot spot, if that is what you mean by "hot spot app", and the Xperia X compact is no exception. I have certainly used it as a hot spot.
A:Answeryes, it has an SD slot. google the phone plus the word "specs" and it will give u info on the size and many other things. will not work with Verizon network tho.