Decoy or EMP grenade?

[psijaka]

I'm about to spend certs on my Infiltrator grenade slot, and would like to know exactly what effect the EMP grenade has before making the decision. I've come across previous threads about this, but these don't answer all of my questions and are pretty old so the info in them may well be out of date.

Does it:
Deplete shields, effectively reducing people's health?
Destroy or deactivate mines, engi turrets or other deployed devices?
Have any effect on vehicles?
Have any effect on enemy phlanx turrets, air/vehicle deployment terminals etc?
Jam the mini map?
Interfere with enenies ability to spot enemies and remove the blue triangle/name identifying their friendlies?
Have any effect upon friendly forces within it's AoE.

Also:
What is the radius of effect?
How long do the effects last?