He has always been an android fan.

Can't blame him. He is a technical person. As any technical person may it be engineers or IT personnel generally prefer Android over iPhone due to the flexibility of the phone.

The things they can do on Android are mainly not limit by the manufacture.

However, Apple on the other hand limits all kind of things.

People who doesn't like to fiddle with their phones too much would generally prefer iPhone.

Enuff said.