Share your experience!
After Last system update on 21/5 the Phone is shutting down and re starting after few minutes at any time or status, at the same time battery is going down ver fase.
Hi @Rroman15, welcome to the community. I am sorry to hear you are experiencing this problem. 
If the issues were caused by a software update then I would recommend you run a software repair using Xperia Companion. In most cases, this should fix the issues you are facing.