Brakes after OS upgrade

[Oksa_beast1989]

The operating system updates came and I successfully installed them, but it turned out to be a mistake. The smartphone began to slow down very much, the Wi-Fi signal began to vanish, although it shows a full scale. Games and the social network are terribly slow

[CameronT]

Hi @Oksa_beast1989, Welcome to the community. I am sorry to hear about this  

If you experience performance issues after an update, the first thing to do is make sure all your apps are up to date. If they are and your issues are still happening then I recommend you perform a software repair using Xperia Companion.