Nowadays, almost every smartphone is equipped with advanced camera. Starting from high pixel density, AF facility (AutoFocus), Macro Function, Panorama etc.
Macro function is a facility to shoot from a very close distance. The distance between 5 cm to 3 cm from the object of the image that we aim at. The result did not disappoint. Even detail without blur.
The smartphone I use is Samsung Galaxy Ace 1, with 5MP AutoFocus camera. Now, I use Galaxy Tab 3 version 8 inch with the same resolution 5MP. I also tried to use the world's most legendary world-renowned smartphone from Apple vendor that is iPhone 4s. But, I have to work extra hard to get sharp images. Maybe I'm not familiar with the iPhone, so for the category "macro function" I prefer to use a smartphone vendor Samsung.