After I installed android 4.3 my phone freezes randomly like just now for like 6 seconds and pauses no matter what you are doing for a few seconds it gets really annoying like when im typing it suddenly freezes or when im watching a YouTube video it will just freeze up, it was fine when I used android 4.2 but ever since I installed it it freezes randomly its sooo annoying! How can I fix it? I don't want to loose any contacts or have to transfer everything over but I have to if its the only alternative I went to the phone shop and they told me to ahh its happened again! They told me to transfer everything over and reinstall android 4.3 but how? And also they said I should reinstall android 4.2 until a new update comes out and fixes the problems in android 4.3 but whens that going to be? I like some of the improvments in 4.3.