In the past, buying a mobile phone was easy and cheap.
The phone itself would come with the wall charger, manual and, in later manuals, a hands-free set.
Then it advanced.
You would need to get the mobile phone, and top up more for an additional bluetooth headset.
Now it evolved.
You need to get the phone that comes with a usb charger, get the bluetooth set, get an extra battery, and get a portable phone charger.
The bigger the better?
Nah, I think evolution breeds bleeding of the wallet.