I was a big fan of Nokia Symbian until i moved to Samsung Android powered phone and i saw the difference between an Android Phone and Nokia Symbian phone.
As i was enjoying my small Android phone until i decided to do something big with my phone such as playing heavy duty games etc.
The first Android phone i used has a very low internal and Ram memory and it hinders me from enjoying my phone because all the games i like playing needs more memory and at least 1GB of ram to run but my phone is missing those requirement.
Imagine when you are using a phone that you can't install any game because when you do you will see a warning message of insufficient memory.
After i changed from Symbian phone to Android i still see something good in Symbian phones such as data consumption because android consumes my data 10times more than Nokia Symbian phones but then other things works in more advanced way with Android compared to Symbian phones.
When buying an Android phone try to by the one that has at least 2GB of Ram and 8 to 32GB of internal memory if you really want to enjoy your phone and escape the warning message of insufficient memory when you want to install your favorite apps and games.
After my experience with my low memory phone i decided to go for something Unique, powerful and smarter like Samsung Galaxy S6 Edge
and i have finally seen the power of Android phones.
Buying an Android phone with big screen is not actually the main thing you need in a phone but always consider the Processor, Ram, Operating System (OS) and its Version, you can read more about the: things to checkout before buying any Smartphone