The third-generation HTC One smartphone which was first released in March 2015. Its major revisions on the M8 design include the octa-core Snapdragon 810 processor and a 20-megapixel rear camera.
Where is led dioda? Is it on dother board? On some other part? Thank you!
See the teardown guide to see if it answers your question.
HTC One M9 Teardown
I did watch that video, but i didn't recognize led dioda anywhere.