I have a phone with 3.2 MP and other one with 5MP camera. but output of both are same . is there anything else to consider with buying mobile phone of good quality
megapixels are not a measure of image quality. Image sensor size, and construction are more important. In the world of photography, mobile phone cameras are garbage, let me just be honest. However, some mobile phones have decent image sensors in them. Sony's BSI image sensors are the best. They are used in the iPhone 4, 4s, 5, samsung S3 and many Nokia phones. Currently the best is the Nokia Lumia 920, hands down. The key reason? It's the first image sensor in a phone that is anti-shake. This allows the shutter to stay open longer in low light, that keeps the ISO down, and results in cleaner images. Until another camera features this tech, or simply uses a much larger sensor without adding pixels, the Nikon 920 will remain on top.
It's well known that cell phone cameras are junk. If you want real photos buy a real camera.
Apple iphone 4s-5 or the Samsung galaxy s3
No! The snap shots will absolutely be of terrible quaility. The current very good cameras on telephones are 5 megapixel, despite the fact that that you may get many unique ones in between. 2 megapixel is perfect however at the least 3 megapixel for excellent quility can be first-rate!
