Apps crashing, random rebooting

[Zoojah]

Hello

I recently bought a new Sony Xperia Z3, after a weeks use I started noticing alot of problems which I would like some insight in.

The problems I am experiencing are that all sony default apps crashing and some other apps aswell. 

Apps that have crashed are; the contacts app, the messenger app (not facebook), the homescreen app, the album app, the walkman and the movies app.

When they crash I get a message saying Unfortunately "app name", has stopped. The only way to make the app working again is to reset the phone. 

This happens quite often which is suprising since the phone is new and its a flagship device.

The second problem I am experiencing is the phone randomly reseting itself, this happens about once per day. I belive the reason for the random resets are the crashing apps. I think that because when I was using my phone all apps suddently crashen, then the phone just reset itself twice before it was useable again.

Thank you for all reply's and fix beforehand and sorry if my english is a bit bad!.

[Thommo · Accepted solution]

Try performing a system repair using PC Companion as this will often fix issues - This will factory reset your phone

Switch off your phone and unplug from Pc (Hold volume up and power for around 10 seconds)
Start PC Companion and select Support zone then Update my phone/tablet then in Blue Repair my phone/tablet and follow the on screen instructions - When prompted connect your phone still switched off holding volume down or back button - This should start the repair or reformat process

If you are using Windows 8/8.1 or a 64bit operating system then adjust the settings for PC Companion and run in compatibility mode and chose Windows 7 or XP

[Zoojah]

Thank you for the fast reply. I will try this out when I get the time over the weekend and come back with a reply if it helped or not.

[Uliwooly]

Don't forget to backup

PC Companion (PCC)

Bridge (for Mac)

Alternatives on How to backup Xperias

http://talk.sonymobile.com/thread/36355

[Zoojah]

thank you!

[Uliwooly]

Did it worked?

[Zoojah]

hmmm, it sort of worked. Spotify has been crashing a couple of times, but besides that the phone works ok now.

[dandy63]

Have you tried running your phone in Safe Mode just to see/rule out if any 3rd Party Apps are interfering with the operation of your phone 

http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008

[pheise]

I had this problem too running calling apps (particularly Myline).

I ended up just using the website.

I was able to use the app there.

I'll try this proposed solution!