Why is 3G sunsetting / shutting down / powering off / retiring?

Shutting down the 3G network is part of an initiative that all Malaysian telcos are working towards under JENDELA, to cater for rising demand for better quality connectivity. Doing so will free up more spectrum capacity to support higher traffic on the 4G network, resulting in better performance and quality of experience for all 4G users. This will enable telcos to cater for the rising demand for better quality connectivity.