It is very easy to take a screenshot on the Samsung Galaxy A7 2018. Even You do not need to use or install any additional application on your Samsung phone. You can capture a screenshot on the Galaxy A7 2018 using its Hardware Keys. Or You can do it by (Palm Swipe to Capture) feature.
You can apply the same steps to take a screenshot on Samsung Galaxy A7 2018 with the model numbers: SM-A750F, SM-A750FN (with NFC support), SM-A750GN (with NFC support), And SM-A750N.