I've been using phone for few weeks now and have a few issues. 1.Notification sound volume: I can't change just notification volume. Volume settings do not even offer it. Quick settings app does not do it to either. Is it even possible? 2.I noticed huge battery drainage and massive phone heating in low signal areas, anyway to prevent it? I know some phones do that, but my previous android was not one of them. 3. When ever I start Pandora, it plays at very low volume, once I get any notification (email, sms etc.) sound fixes and starts playing loud. Any solution? 4.I had Google maps crashed 4 times in one day during navigation, no clue why. It goes not responding pretty often too I have an unlocked GSM 16gb version, updated to 4.4.3. Everything is stock. Using ART compiling. Thank you for your help.