yes. it has 2.
no
you cant
YES
The Samsung Galaxy S4's screen pixel density is 441 ppi.
The Samsung Galaxy 2 was released in May 2011.
Yes. It has a 2 MP front camera.
The next sequel for the Samsung Galaxy series is the Galaxy Camera 2, their new mirrorless camera, although there are currently no features revealed yet.
There's no Samsung Galaxy Nexus 2 model yet.
The Galaxy Tab does not have a front facing camera. The Motorola Xoom and the iPad 2 do however.
To take screen captures with a samsung galaxy mini 2, one must first make sure screen capture mode is on. Then they must click the camera flip button and select capture.
There are many great features with each Samsung Galaxy S Duo 2 and the Samsung Galaxy Core. Depending on what the plan for the phone is, depends on which one would be better for you.