Why should I constantly restart my phone?

[tomatojam]

Fingerprint scanner stops working after 3-4 hours. Only reboot fix it.
Charging goes in half of power (8.5V@0.4A) until I restart phone. After that — 9.5V@1.1A.
WHY? Why do Sony make so bad phones? Why should I constantly restart my Xperia L3?

[Strampke]

Hi @tomatojam 

Your L3 seems to be problematic.

Power delivery not working, flashlight locked, fingerprint scanner not working, what else?

When you're really in trouble with your phone then do a software repair with Xperia Companion.

After the repair do NOT restore all apps, you know there are apps misbehaving going outside the mainstream.

When the mishap doesn't stop then take up contact with Xperia Support.

You can find chat, mail and phone contacts in the Support app on your phone.

Please report how this story continues.

My guess is either misbehaving apps or a hardware problem.

BTW

Try using the device without SD card (if you have one inserted) as well.

Dying SD cards are known to infect smartphones which become paralysed

[tomatojam]

After last update troubles was gone. It WAS Sony's firmware problem! @Strampke 

[tomatojam]

@Strampke 

 many people talk about slow charging until restart.