Is it possible to add battery here – to make wireless airport for music listening by Apple's Airplay (Wi-fi)?

Bluetooth is awful for music with no quality at all until we get someday 5.0

I noticed that Apple's airport express is getting hot during operation, maybe this problem can be managed with getting rid of converting power supply (battery direct needed voltage).

Guys, is it possible to turn rear camera to 90 degrees to record widescreen video with holding phone vertical? Maybe with some cable extender or etc?

It is really annoying that you must always hold phone horizontally to make normal videos, still the camera manufacturers can't make camera which shoot widescreen on any side... or very obvious design flaw by Apple - why they even offer users to make vertical videos with vertical bars? No one needs them.