There are applications that can perform this functionality, but fortunately, you do not need to install any additional app as it is included in the Android 7.1.2 Nougat operating system.
When you make a screenshot, you can send that WhatsApp conversation, Tinder, Instagram story, Facebook photo or video frame to your LG device’s memory..
On the contrary, if you want to record a video of what is shown on the screen of your LG Phoenix 4, for example, to record a video call,
First Method For Screenshot or Capture in a Phoenix 4
If you want to make a screenshot to your LG Phoenix 4 you have to follow these simple steps:
1- First step:
Go to the Phone screen you want to capture the screen.
2- Second step:
Press the power key simultaneously and the volume key down in your LG Phoenix 4. If you want to capture a video the procedure is the same but pressing the power key and the Volume key up in your Phone.
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3- Third step:
The captured image is automatically saved in the gallery of your mobile/cell phone.
4- Fourth step:
Second method to make a screenshot in Phoenix 4:
1- Go to the screen you want to capture the screen in your LG.
2- Open the notification bar and select “Capture”.
3- The captured image is automatically saved in the gallery of your phone or tablet LG.
My Galaxy S6 was automatically increasing volume and not showing it. To fix this problem, I flashed the phone. I found the firmware file here: https://sfirmware.com