Dear Experts, Writing in here regarding issues I m facing with Kitkat 4.4.2 update (in google Nexus 4). I have observed the following issues post update of this new OS 1. Dialer error, dialer crashes and it takes time to call. It crashes many times while i attempt to attend incoming calls 2. Heavy Battery drainage without using the phone at its maximum capacity... here i want to highlight that i m not using my phone in 3G n all unwanted applications are disabled etc...still my full battery gets over within 5-6 hours 3. Multiple restart sessions and reason is random...smtimes when i m using camera, smtimes when i try to play a game I have written to Google team for this however till date no solution. Really sick of this phone as i m not able to use it properly. I did full factory reset but problems still persists. I am thinking of moving back to Android 4.3..can i do it without rooting the phone, if no, will it void my warranty? If no, please advise how I can do that. Request for an easy language as i m illiterate in technical terminology. Any help in this matter will be highly appreciated. Count on u guyz. Thanks.