Hello. I have this problem when using HSDPA Internet connection. Whenever I try to open a site or go on Facebook the Sony's phone (Xperia Z1 in my case), which I have to say I regret buying, is trying to switch connection from H to H+ and most of the time isn't capable of doing. When it doesn't switch to H+ it is not possible to open anything. And it goes to H constantly. When it's on H and I try to open a site I have to wait up to 2 minutes before this phone starts to work. What is going on?
