Is this diode disguised as a capacitor? Do diodes often look like that? If it didn't say D1 next to it, I'd have figured it's a capacitor. Can we please have more consistent looking components? Thanks!

 

Maybe there is other photo?

 

The picture has poor resolution so it is difficult to see the details.
It appears to have a darker stripe at the left end which might be the polarity marking of a diode.
Sometimes changes to a product design may replace one component type with another without changing the PCB so the component ID may not be reliable.

 

This is the best I could achieve with my Galaxy S5 through a magnifying glass (S5 only has digital zoom):

 

If it is a diode then there would be some polarity indication but there is nothing visible in the improved picture so, unless you can see something with magnifier and eye then it isn't a diode.
But, in that case, I don't know what it is - capacitor, inductor, or even maybe resistor or fuse.

 

Hello,

It is likely a LED, thats why it is marked as diode.



http://www.limetrace.co.uk/how-to-determine-the-polarity-of-an-smd-led

Bertus