A:AnswerThe item is not very heavy, but does have 4 felt/rubber nubs on the bottom to prevent sliding. The power cord is quite thick (think power strip cord thick), so it has a bit of weight pulling if it hangs over an edge. You would probably need to leave about 6+ inches of cord on top with the item.
A:AnswerYes, if my phone wasn't sitting on it at just the right angle it would pause charging. My cats would bump it all the time then I'd wake up in the morning with a dead phone.
A:AnswerMy iPhone 6 doesn’t have the ability for wireless charging, so that doesn’t work, but I charge it through the USB. You’ll have to check to see if your phone allows that. If it does, then this product should work.