Toyota Corolla 2016 Owner's Manual page 289

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When talking on the phone
●Do not talk at the same time as the other party.
●Keep the volume of the received voice down. Otherwise, voice echo will
increase.
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Automatic volume adjustment
When vehicle speed is 50 mph (80 km/h) or more, the volume automatically
increases. The volume returns to the previous volume setting when vehicle
speed drops to 43 mph (70 km/h) or less.
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Phone call system functions
Depending on the cellular phone, certain functions may not be available.
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Situations where the system may not recognize your voice
●When driving on a rough road
●When driving at high speeds
●When air is blowing out of the vents onto the microphone
●When the air conditioning fan emits a loud noise
5-9. Bluetooth
I n f o r ma t i o n P r o v i d e d b y :
287
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Phone
5