Share your experience!
1.very often my handset show the network but I can not make or receive calls. Only after restarting I can make it. It is harassing, people always complaint me about being not reachable.
2. Phone misbehaves when using it while charging, the touch not works apps misbehave.
Need help seriously
Are you using the proper Sony charger? I have heard about this happening when using a different charger.
There are all sorts of bugs including those you are mentioning here in Xperia SP. We are hoping that new update will sort these things.