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iOS7 optimized
Glyph
Miu
Device, turn off, power
Black
512x512
Mixed
Glypho - Free
power, switch, off
Icons Solid
power
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Material Core
372x512
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Mobile apps
app types in grey
electricity, Battery, plug
Files & folders
AwesomeFolders
Folder, Io, power
UI
Google Material Design icons
gcons
463x512
Typicons
Freecns Cumulus
off, power
power, off, Circle
Business & finance
48x48 Free Time Icons
Strike, Idea, light
48x48
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24x24 Free Application Icons
Viagra, power, Xxx
24x24
Pittogrammi
SEO & web
Metro Uinvert Dock
power, Down, shut
256x256
Hibernate, power
logoff, power
Free Mobile Icon Kit
Electric, power
64x64
WPZOOM Developer Icon Set
power, supply
plug, power
Mimi Glyphs
electricity, power
16x16
IcoMoon
32x32
Desktop apps
16x16 Free Toolbar Icons
lamp, light, question