This is incredibly strange. I've been bought an external bluetooth speaker and it's all good and all and it works nicely but I can't control the audio. At all. I can move the things up and down but the speaker doesn't care. It works fine on a Sony Xperia M2, samsung Galaxy and an HTC but not on my phone. Strangest part? 5 minutes ago it suddenly started working. I restarted the device to see what's happening and I can't control the volume again. It's stuck at maxvolume as well, so it's not usable. It's definitely a Sony Xperia problem, my friend has a Z3 and he couldn't control the audio either.
