A:AnswerThere's not really a way to prevent this, as the screen is glass and will have a reflection no matter what. As long as you aren't focusing on it, it won't be too big of a deal. The most I can recommend is having it in an area that doesn't have light directly on it, as the reflection of lights it what tends to bother me more than anything else.
A:AnswerAny speaker would be fine as long as there is a 3.5mm audio cable connection in the speaker so that you can connect it to the monitor. For example I use the Jawbone Jambox and connect it to the monitor using the provided 3.5mm audio cable.
A:AnswerI don't know if you are from the future or not and just confused about our current setup here in the 21st century, but androids are not a thing yet. I know there are few companies working on robots but the technology has not become that far advanced yet. I can tell you though that this monitor has an HDMI input so if your "android" is here with you from the future then perhaps if it has an HDMI out, you could plug it in to this monitor but why would you want to?! I would be spending time just chillin' with the Android and seeing if it could upgrade my parts too instead of hooking it up to one of these old tyme screens... Good luck with everything and I know this answer is many months after you asked the question, and maybe it isn't all that helpful, but since you are from the future I assume you could have seen the answer before you came back to our time. Is there the internet in the future? Or is it called the Zuckerberg now or something?
