green background with a cartonized phone and charger and battery level displayed on a screen - Weiyi Zhu/Getty Images Nothing can be more frustrating than realizing your phone hasn't charged right ...

Smartphone plugged into a charger and resting on a nightstand by a bed. - Abdullah Durmaz/Getty Images Knowing when and how much to charge your smartphone can be trickier than it sounds, but many ...

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Knowing when and how much to charge your smartphone can be trickier than it sounds, but many experts recommend a simple rule of thumb: you should generally maintain a battery charge between 20% and 80 ...