How can I install customized Android OS?

Question

I want to install customized Android OS in my Samsung Galaxy III.

Can we do that or not ?

If we can not do with Galaxy III, then is there any other phone on which we can do the same?

Thanks In Advance

Answer 1

1. Yes, you can, but needed to use compartible ROM (if you don't want to break your phone). But before flashing it's recommended to read forums, were potential and actual problems with ROM are described.
   Example: XDA Developers forums, Android Development subforums for you device (ROM are hardware specific).
2. Every phone with unlocked or possible to unlock bootloader.

Answer 2

You will have to create your own custom rom, e.g. customize the AOSP build, which is the most standard Android version you can imagine, no extra's from HTC or Samsung etc.

Answer 3

Have you tried using a custom launcher first? Nova and Apex (among others) give you a stock AOSP feel with many extras including the ability to use custom icon packs. You can get a customized look and feel without the warranty concerns that come with rooting and custom ROMs.