This Mobile speaker is very low sound this phone battery backup is not good this mobile is very strong my mobile is unbrackble this mobile many problems are low network range.Samsung galaxy j7 pro doesn’t not work as its shown in the ad that we can do payment by phone.i tried many times took phone near atm sweep machine it doesn’t not work. My advice to Samsung is u guys should drop a little bit of your price range in terms of your overall phone feature bcoz there are so many better options for a customer in the market in a lower price.