How to get out from recovery mode?

A customer ask me how to get out from recovery mode on a Samsung S6.

I´m not that in to Andriod and Samsung, so I´ll ask here :p

After a day outside the phone powered off and did not power on. When we got it on it boots in recovery mode. First message is "Recovery is not seandriod enforcing" in the upper left corner. After that it gets to, what looks like, recovery mode.

It says: "Your device will be in the Recovery mode trough the revery process. Tip: If the data recovery process is completed, but your device keeps in the froxen stat, please click "Exit recovery mode" button in the lower left corner on the interface, or directly close the program to make your device exit the recovery mode."

I can not exit of press any button tho... Can force restart it, but the same happens.

Here is two pictures: