See also FAQ Topics Firmware .

And what is this for my barely noticeable inscription on the screen (especially on white you can see)?
The screen is worn out. Feature of AMOLED technology.

When there is a lot of white color on the screen, the brightness drops, is this normal?
Yes. Feature of AMOLED technology.

Is it true that turbo charging is harmful, it is harmful to keep charging for a long time, and you need to “train” the battery?
If we talk about the harm to the battery, then accelerate its demise two things: fever, full-cycle charge-discharge. The technology of "fast charging" only on the 3rd place. Try to charge as much as possible, preventing deep discharge (below 10%), and avoid overheating of the smartphone - for example, it is not necessary in the summer heat to play 3D games and charge at the same time. Everything else can including QuickCharge, provided that the smart not overheated. To maximize battery life is not long use QuickCharge, not discharge below 20%, no charge is above 80% (in practice difficult to implement) follow temperature (optimum 20-30 В° C). Together, these measures can extend the battery life in half, and individually - by 20-40%. Details: The maximum charge mode 9V x 1.45A = 13W. Battery Capacity 3680-3900 mA / h, power 14-15W / h, 1C current is recommended for Li-ion.

Moved from XT1080M, on Turbo the battery holds two times less
The battery capacities of these models are approximately equal, but the filling in the Turbo is more powerful. Hence the relatively low autonomy.

There is a suspicion that the body is "drowned." Can I somehow find out without opening the case?
Yes. Look at the white litmus paper with red stripes in the hole in the bottom volume button. If it is completely red, there was moisture ingress, at least in this part of the smart.

When an incoming call, the subscriber does not hear me for a couple of seconds, is this normal?
Yes, there is such a feature.

Quiet speakers. Both main and ear
Another weak point of the great model. You can fix the patch, but at max the volume will wheeze.

I see a long strip of "grill", in which place are the speakers?
If you look at the screen: the main speaker on the left, the ear on the right. The speakers are identical to the Droid Maxx / Ultra / Mini (except for the main one - it is additionally sealed in a plastic box).

How many infrared sensors?
Four. Three in the corners - determine the direction of movement of objects over a smart, and one combined with a light sensor - for ActiveDisplay. Detection and identification of the face in front of the screen is performed by the front camera.

How many microphones?
Four to five (depending on board revision). Responsible for the voice of a pair of front, rear used in the operation of the noise canceller, Moto Voice and video recording.

See alsoFAQ Topics Firmware .