How to scan documents on a smartphone HTC

HTC One Remix HTC One Remix
HTC Desire 728 HTC Desire 728
HTC Desire 326G dual sim HTC Desire 326G dual sim
HTC U Ultra HTC U Ultra
HTC 10 evo HTC 10 evo
HTC Desire 600 HTC Desire 600
HTC Desire P HTC Desire P
HTC Wildfire E2 HTC Wildfire E2
HTC U11 Eyes HTC U11 Eyes
HTC Desire 12 HTC Desire 12
HTC Desire 820q HTC Desire 820q
HTC Desire 626G+ HTC Desire 626G+
HTC Desire 816G dual sim HTC Desire 816G dual sim
HTC First HTC First
HTC One (M8) dual sim HTC One (M8) dual sim
HTC Wildfire E2 Plus HTC Wildfire E2 Plus
HTC Desire 326G HTC Desire 326G
HTC Desire 520 HTC Desire 520
HTC One ME HTC One ME
HTC Desire 310 dual sim HTC Desire 310 dual sim