Camera 215
Camera flash doesn’t turn on?
Using the flash eats up much battery power. To save battery 
power, the camera disables the flash (even when you have set the 
camera flash mode to Auto flash or Flash on) when one of the 
following occurs:
You have an incoming call
The flash will be disabled temporarily when you have an incoming 
call. After the call ends, you’ll be able to use the flash again.
If you have set the flash to Flash on, it turns back on after you 
answer and end the call.
Your phone’s battery level reaches 15% or lower
Recharge the battery so that the camera can have enough 
battery power to use the flash.
Cold weather may lower battery performance which
affects the flash
To make sure the camera has enough battery life to power up the 
flash, keep your phone warm. When not in use, put the phone 
inside your jacket to keep it warm, and try to avoid sudden 
temperature changes that may affect battery performance.
Wi-Fi Hotspot is turned on
The flash is disabled automatically when you use Wi-Fi Hotspot to 
share your phone’s data connection. For more information about 
Wi-Fi Hotspot, see “Wi-Fi Hotspot” in the Internet chapter.