There are many ways to take a screenshot on the BLU G72 Max phone and a few more best tips tricks and cool hidden features to get a screenshot in a quick way:
Gesture
Use buttons
Google Assistant
Install screenshot app from Google Play
Use Capture+ icon at notification bar
We understand than you're smart. This is why there will be no instructions like select the screen you want to save or switch on your phone. No crap. Exclusively the essential information how to make a screenshot on the BLU G72 Max phone.
Use buttons
To take a screenshot is to use the buttons. You can simultaneously press the Volume Down and Power buttons and keep them pressed until the screenshot is captured. You can also use this method to make a scroll screenshot.
Click to zoom in
If the main way to take a screenshot not work and you can't find image let's go further.
Use apps
You can use additional screenshot apps which are very much in Google Play: Screenshot Pro, Screen Master, Private Screenshots, Screenshot touch, Screenshot Easy etc... They all have instructions on how to use them to take a screenshot and save the picture.
Google Assistant
The laziest way is to use Google Assistant. Just say OK Google and then Take a screenshot. The gadget will do everything for you.
Click to zoom in
How can I share my screenshots? Depending on the Android version and the custom UI, sending screenshots may differ. In lastest versions of Android (9 or 10), the quick actions menu will arise after you take a screenshot instantly. There you need to choose the appropriate icon for sharing. Or just open the gallery app on your phone.
Where do my screenshots go on? If you can't find the screenshots you made, don't lose heart. The gadget can save screenshots to different places. Again, it all depends on custom shells. A pure Android throws pictures into the gallery (DCIM). Other shells can save screenshots to a separate folder for your convenience.
This is suitable for gadgets of all operators.
TracFone
Sprint
Virgin mobile
Metro
AT&T
Verizon Wireless
T-Mobile
Simple Mobile
Cricket Wireless
Your gadget has a screen resolution 720 x 1600 pixels. So the screenshot will be the same size. And the file size will be 0.1 MB, so count how much space you need in your phone's memory or on your microSD card.
Some video or images from this post may not exactly match your phone model. However, they have common parts that will help you get the required result.