There is a large quantity of Android phones available on the market. Samsung makes a large range of them also, and product quality will differ greatly depending on price point.
I know that Samsung makes the Galaxy S3 & the Galaxy S3 "mini" and a whole bunch of other android phones.
The S3 was the flagship phone, and the S3 mini was a gimped version, much lower resolution, lower processor speed with a different (older) processor and different & much slower video chip, all premium features stripped out and so-on and so forth.
LG makes android phones that overheat and bake themselves from the inside out, and eventually die horribly within 3 months of you turning them on. They're cheaper though, and have flagship type features, also can be used to replace easy-bake ovens.
Sony makes gaming oriented android phones, along with standard form factor phones.
Apple makes ... iphone 5 with 64GB, iphone 5 with 32GB, iphone 5 with 16GB ... OMFG! The choices are so ... so ... underwhelming!!!!!!