A:AnswerI don't think I would take it to the beach unless you plan to keep it up on a table. The structure has multiple places where sand could get through.This may impact the unit or life expectancy. There are water proof bluetooth that may be more appropriate/safe.
A:Answerwhat kind of phone do you have? On the iPhone when you get a phone call, a box should pop up indicating which speaker source to use for the phone call. Android should have something similar.
A:AnswerYes, this speaker works well with my iPhone 6, iPhone 4s, Kindle, iPod, and iPad. It works equally well with other devices that don't have Bluetooth if you purchase (or already have) the required cable.