Carry your cell phone and keep it charged — and make sure to tell your friends where you're going and when you'll be back.

带着手机并充好电，告诉你的朋友你去哪并注意安全。

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Pay attention to your phone's battery indicator, so that you know how much power your cell phone has and if the cell phone needs to be charged.

注意你的手机电池指示，以便经常了解手机里面还剩多少电，以及你的手机是否需要充电。

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If you have to be out, be prepared with a charged cell phone, an emergency kit with food, water, blankets, flares and a shovel.

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He had no human contact, just a cell phone charged by solar power.

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Nokero's SunRay Pro Power solar charger is perfect for keeping a cell phone charged, and for every Emergency Power Kit Voltaic sells it is donating a kit to an individual in need.

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