I can remember those days when Simoco, an India-grown company brought some large note like phones during those symbian days against loud, large chinese resistive touchscreen phones . The package comes with an extra battery and a charger to charge it outside the phone. Gone those days, Li-Ion or Li-Polymer batteries have been evolved a lot now. The battery technology has improved a lot - from wireless charging to fast charging technology make our digital lives easier.
Fast charging has became a USP for smartphone makers, just like how powerful battery included or camera capabilities or bigger screen or latest chipset. The companies simply promotes how fast the smartphones get charged in minutes or simply says xx Watt charging capacity.
