Have been using this and have a few questions if anyone can chime in.. 1. Can the Lock sound be changed? I don't like the dull thud sound. And prefer the lock sound on my 6 plus 2. Screen – it's a little warmer (yellow cast) than my 6 plus which is cooler (light blue cast) — is this normal for the 7 Plus to have a warmer tint? 3. Volume sound seems barely audible eg, the keyboard clicks and less loud than on my 6 plus 4. I did a performance test using AnTuTu Benchmark v6.2 and got a score of 179873 — is this good? 5. The ear grill (next to the front facing camera) — is this just a ear speaker (for when making phone calls), or is there a mic in there as well? I read there is a speaker in there to create a stereo sound effect with speakers at the base of the phone hence best to put phone into landscape.