I got just few days ago Ainol novo 7 elf. Everything is fine. But I am disappoint about battery backup. I am getting max 2hr backup for normal usage. If I use wifi then reduce more backup time. I'm just want to know how is others? Is this problem only for me or it's normal for novo elf? Have 2 more problem. Screen brightness controll from settings not working. always same. Another thing is microphone not working. I've tested in voice record, skype and others apps. Please let me know how is yours ainol?