A terminal apparatus comprising: a display device; a first sensor configured to detect a proximity state of being in proximity to an object different from the terminal apparatus; a second sensor configured to detect vibrations; and a processor, wherein the processor is configured, when performing a backlight control process, to determine whether or not a first detection value acquired from the first sensor indicates that the terminal apparatus is in the proximity state, turn off a backlight of the display device when it is determined that the first detection value indicates that the terminal apparatus is in the proximity state, without having driven the second sensor in said backlight control process, or along with the second sensor if it is operating and when a set time period has elapsed while the terminal apparatus is in the proximity state, and acquire, when it is determined that the first detection value does not indicate that the terminal apparatus is in the proximity state, a second detection value from the second sensor, determine whether or not the second detection value, which has been acquired, indicates that the terminal apparatus is vibrating, and turn off, when it is determined that the second detection value does not indicate that the terminal apparatus is vibrating, the backlight of the display device. a display device; a first sensor configured to detect a proximity state of being in proximity to an object different from the terminal apparatus; a second sensor configured to detect vibrations; and a processor, wherein the processor is configured, when performing a backlight control process, to determine whether or not a first detection value acquired from the first sensor indicates that the terminal apparatus is in the proximity state, turn off a backlight of the display device when it is determined that the first detection value indicates that the terminal apparatus is in the proximity state, without having driven the second sensor in said backlight control process, or along with the second sensor if it is operating and when a set time period has elapsed while the terminal apparatus is in the proximity state, and acquire, when it is determined that the first detection value does not indicate that the terminal apparatus is in the proximity state, a second detection value from the second sensor, determine whether or not the second detection value, which has been acquired, indicates that the terminal apparatus is vibrating, and turn off, when it is determined that the second detection value does not indicate that the terminal apparatus is vibrating, the backlight of the display device. determine whether or not a first detection value acquired from the first sensor indicates that the terminal apparatus is in the proximity state, turn off a backlight of the display device when it is determined that the first detection value indicates that the terminal apparatus is in the proximity state, without having driven the second sensor in said backlight control process, or along with the second sensor if it is operating and when a set time period has elapsed while the terminal apparatus is in the proximity state, and acquire, when it is determined that the first detection value does not indicate that the terminal apparatus is in the proximity state, a second detection value from the second sensor, determine whether or not the second detection value, which has been acquired, indicates that the terminal apparatus is vibrating, and turn off, when it is determined that the second detection value does not indicate that the terminal apparatus is vibrating, the backlight of the display device.