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The phone battery icon turns yellow because the power saving mode is turned on, and you only need to turn off the power saving mode.
Yellow represents a warning, when the phone power display yellow, indicating that the phone power is only half or less, this time you can be charged.
Less than 20% of the battery will show yellow, less than 10% will show red, and it will show green when charging!
It means charging in a different way. When the flash charge is yellow charging mark, when the white is ordinary charging.
VOOC flash charge is a fast charging technology independently developed by OPPO, and has applied for 18 patents, increasing the fastest charging speed by more than 4 times. VOOC flash charge was first used on OPPO Find 7.