M5 touchscreen stops working

[daRRko]

Hello everybody

I have this anoying issue with M5 that drives me crazy. So, phone start turning of from time to time, and i handle that with carying power bank with me all the time which was also anoying but ok. And then all a sudden touch screen stop working. I connected it to Xperia Companion to try to fix it that way as i saw instructions online both from Sony officialy and some other people. Companion is asking for turning on MTP mode which can't be done as i can't touch the screen. So i bought otg cable just cause of that, connected it, nothinng happens. Now i have to go trough settings on phone to change some usb device settings which i can't cause one more time my screen is not responding and also can't use mouse. so i turned it off as Sony suggested and turn it on with mouse already connected, again nothing. i tried cable on other phone just to make it sure that cable is working properly and it does. 
First of all it's such a shame for company such as Sony to not make it officialy that these phones are faulty and offer service for them.
any suggestions? even though i don't think there is solution but taking it to service

[daRRko]

It's not that randomly. It's really like a pattern, in same time intervals. Sound for connected....disconnected. after minute same and if i keep it pressed for whole day it would happen million times. 

Other usb cable is acctually start charging phone. And other ports are doing same depends on cable.
Anyways Thanks a lot for your patience  
Also i don't think it's a mobile port problem cause it's keep on charging. Also keep asking to switch to MTP mode when turned on.

[Ajith5]

Try like this, press and hold power button and volume up button, it vibrates for 3 times(i don't know what it actually does) then follow the above said procedure.

If not solved, contact sony support team by phone or chat with them. They may well assist you. Eventhough not solved, going to service centre is the only way
It's my pleasure to help you☺

[daRRko]

I guess that is forced way to open recovery mode which should always work. but not with mine so when i do that it vibrates once then 3 times, if i release buttons it does nothing, but if i keep pressed it will vibrate once than 3 times every minute, until i release it. It's pretty much same behavior as connecting and disconnecting on usb. Like phone is trying to do something but it keeps going to start again over and over. It sounds like something that virus could do but recovery should open no matter what. 
also when i press that combination of buttons and connect cable it keeps vibrating in those patterns only diference is that red light is on. I wouldn't bother this much if Sony service covers my warranty but it doesn't, cause phone is bought in states and i am in Serbia at the moment. I will go there soon so I'll try there, i don't have much patiance for this, cause i tried everything

[Ajith5]

Now device is running very good. Heating problem Completely solved. I recommend everyone to do so. Battery backup also improved.

But the previous problems i mentioned didn't solve. Waiting for system update for that.