Problem on Xperia S (Lag, Hang, Error)

[MrUnknown]

i bought this phone few month ago and it seems started to get slow and crash alot

-very lag and crashed even tho my memory just around 40%

-charging problem i charged for almost 4hour+ but the battery still remain 50% ??! ( i closed all the wireless stuff)

-connecting to TV using HDMI cable not work is it my phone battery need to be above 70-80% or something ? ( i tried connected before but now it seems something wrong)

is there any tips or solution for this problem?

[Samuel1]

Seems like there are a lot of issues with your phone. Try repairing the software as a first step. Download and install PC Companion from here:

http://www.sonymobile.com/update