This information applies to stock Android phones and Samsung phones.
These steps walk you through how to trim video with the Google Photos app on Android.
Open theGoogle Photosapp on your Android gear and locate the video you want to edit.

The video you want to edit must be stored on your Android gadget.
Tap the video you want to edit to open it.
The video plays on your machine.

Tap the screen outside of the video to display the editing options.
The video displays with two white Edit handles, one on the left and one on the right.
Tap and hold eitherEdit handle, then drag the handle to adjust the length of the video.
Repeat this step with the other Edit handle, if desired.
TapSave copyin the upper-right corner to save the video.
Your original video and your trimmed video are saved in Google Photos.
Much like the controls for Google Photos, you could crop and trim videos.
On your Samsung unit, navigate to and bring up the video you want to edit.
Tap thepencilicon in the lower-left corner.
The original video remains on your equipment, with no changes.
Nearly all basic editors work as described above.
The following three apps provide additional video editing capabilities.
Each requires a one-time fee or subscription if you want to edit without ads or limited capabilities.
YouCut is free, although you’ll need to view an ad each time you save an edited video.
Adobe Premiere Rushsupports drag-and-drop multi-layer editing, with access to templates, fonts, motion graphics, and more.
Your work syncs across systems, so you could switch devices and continue your work.
In most cases, Google Photos works well when you want to trim a video.
YouCut is worth the money when you want a simple way to make complex edits.
Turn to Kinemaster or Adobe Premier Rush when you need pro-level features.