Constant software crashing after software reinstallation.

[Tepa]

Hello.

My Xperia E3 is like 1,5 years old. My software crashed first time like 2 months ago. After software repair, it worked for 2 months, then it started to crash apps again, and complete software crashed after it. I have reinstalled it many times in last 10 days, it crashed in next 24 hours every time. I thought it could be virus on SD card, so I used it without SD card after repair and it crashed again. I didn't download any suspicious apps, just Facebook, Messenger, Viber and Instagram and it didn't help. Yesterday I did last software repair, and it worked well yesterday, but when I woke up, I saw it starting up without success. When it comes to blue screen, it stops, and restarts again. I tried software repair today and when it comes to end, I get this message: Error code: UEUpdateFailed
CompanionUE 3830. Do you have any idea what could be problem? I don't think it's virus on my SD or something like that, cause I tried to use it without it.. Could it be some hardware problem that causes software crash? Simptoms are same before every crash: some apps start to crash, and then it turns off after some time, and can't turn on. Please help!

Best regards.

[Uliwooly]

@Tepa

What if you remove both SIM and SD cards for few hours?

[Tepa]

Do you think it could solve my problem with constant crashing or just help me repair software again?

I'll try to repair now, do you think I should use it without SIM and SD for some time and then try to put it in again or what?

P.S. It helped with software reinstallation. I repaired it, and turned on, without SD and SIM inside. What do you think I should do now?

[Uliwooly]

@Tepa

It's probably a faulty SIM card. 

[Tepa]

So you think if I get new SIM, I shouldn't have this problem again?

Thank you very much.

[Uliwooly]

@Tepa

keep us updated

[Tepa]

Ok, I'll try to use it for 2-3 days without SIM, if it doesn't crashes then it's a solution for sure. Last 3 times software crashed in next 24 hours.. 

[Tepa]

Update:

It seems SIM is not the problem. It worked first day without problems, then FB app started to kick, without "App crashed" message. I reinstalled it and it worked fine again. Today, all apps started to crash: FB, Chrome, Google Play, some android processes. If I turn it off, it won't turn on for sure..

Do you have any idea what could it be? I used it without SIM and without SD card all the time..

Edit:

All apps crashed, couldn't open any app, so I had to try to restart it, but now it won't turn on, stops at blue screen. When I try to reinstall software I get this message:

Error code: UEStartNoMorePorts
CompanionUE 2294

[Uliwooly]

@Tepa

have you moved any apps to the SD card?

[Tepa]

No, I used it without SD since you told me SIM could be the problem.. I reinstalled software again, it looks like problem was in my PC last time.. But software crashed again today, I just reinstalled it now.. I don't have any idea what could it be.. All I do after software repair is updating system apps and installing Facebook, Messenger and Instagram and connecting to my Google account..