Lenovo S90-A (English/French) Quick Start Guide_Important Product Information - Page 6

Charging the battery Charge the battery as shown. 1 2 Method 1. Connect your smartphone to a power outlet using the cable and USB power adapter that come with your smartphone. Method 2. Connect your smartphone to a computer using the cable that comes with your smartphone. Low battery power Fully charged Charging Turning on or turning off your smartphone Turn on: Press and hold the On/Off button until the Lenovo logo appears. Turn off: Press and hold the On/Off button for a few seconds, then tap Power off Restart: Press and hold the On/Off button for about 10 seconds. Your smartphone has a built-in rechargeable battery. For more information about battery safety, see the "Built-in rechargeable battery notice" section. The battery in this product cannot be easily replaced by users themselves. 3