Recently there was a flood in my area. Due to which we didnt have electricity for weeks.  The smartphone i had lost charge within 2 days. I wasn't able to contact my parents after that. The only thing that calms you in a disaster is when u know your loved ones are safe. I request that the smart phone companies should take more effort to improve the battery life. The smart phone has become the only way of communication. The smartphone keeps getting bigger and better. And i think there is need to focus more on the battery life.