Lenovo K3 Note (English) User Guide - K3 Note (Lenovo K50a40) - Page 16

Operating temperature Be aware of heat generated by Lenovo Phone. When using Lenovo Phone, keep it away from hot or high-voltage environments, such as electric appliances, electric heating equipment, or electric cooking equipment. Use Lenovo Phone only in the temperature range of -10°C (14 °F)-45°C (113 °F) to avoid damage. When Lenovo Phone is turned on or the battery is charging, some parts might become hot. The temperature that they reach depends on the amount of system activity and the battery charge level. Extended contact with your body, even through clothing, could cause discomfort or even a skin burn. Avoid keeping your hands, your lap, or any other part of your body in contact with a hot section of Lenovo Phone for any extended time. Protecting your data and software Do not delete unknown files or change the name of files or directories that were not created by you; otherwise, Lenovo Phone software might fail to work. Be aware that accessing network resources can leave Lenovo Phone vulnerable to computer viruses, hackers, spyware, and other malicious activities that might damage Lenovo Phone, software, or data. It is your responsibility to ensure that you have adequate protection in the form of firewalls, antivirus software, and anti-spyware software and keep such software up to date. Keep electrical appliances away from Lenovo Phone, such as an electric fan, a radio, highpowered speakers, an air conditioner, and a microwave oven. The strong magnetic fields generated by electrical appliances can damage the screen and the data on Lenovo Phone.