Cellucity owner Sean Joffe said smartphones use lithium-based batteries with lifespans measured in charge cycles. He said smartphones typically have a battery capacity of 300 to 500 charging cycles, so the phone battery lasts between two and three years depending on usage. After about 1,000 charge-discharge cycles, batteries can lose roughly 20% of their capacity. The most damage to smartphone batteries is caused by using cheap, off-brand chargers, he said. Using your smartphone while charging does not have any significant deteriorating effect, he added. The consensus suggests keeping your battery between 30% and 90% of its capacity. Samsung states on its support page that you can use your phone while charging, “When you use your . . .
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