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, Mobile Phones Marketing Professional. The average smartphone (powered by a 1500mAh battery) will have a normal battery life of around 10 to 14 hours depending on the usage you have. The main drains will be: screen, data connection, games, music and voice usage. Views Â· View Upvotes.
Best phone battery life 2017: Results. As you can see from the graph below, there's a huge discrepancy in smartphone battery life, with around 5hrs separating the best battery life from the worst.