I have Xperia S with ICS 4.0.4. Two days ago when i returned home from a trip, my phone connected as usual to my home wifi network. I was using it for messenger, facebok etc, but when I wanted to install updates of apps via google play, i click update...and the download didnt start, it s just stuck on thet blue bar moving from left to right... When i turn off wifi download starts immediately over 3G. I did reset my router, my phone to factory settings, several times, i cleared the cache on google play, download manager. I dont know what to do i can browse web, watch videos on youtube, can browse google play, but cant download any app over wifi... Help me please