The samsung galaxy s7 edge are good phone but its most common S7 issues is are experiencing problems with Wi-Fi, including(but not limited to) Gmail not syncing properly over a wireless connection.and This seems to be a bug that requires addressing by Samsung itself, but until then it seems as if the problem might be related to Bluetooth.
Try disabling Bluetooth from the drop-down notification menu.Some have reported that the power and volume buttons stop working on their Galaxy S7. Needless to say, this is a pretty major issue if you’re affected.and last and important problem is Galaxy S7 is overheating problem.