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A method of providing navigation instructions in a locked mode of a device is disclosed. The method, while the display screen of the device is turned off, determines that the device is near a navigation point. The method turns on the display screen and provides navigation instructions. In some embod

A method of providing navigation instructions in a locked mode of a device is disclosed. The method, while the display screen of the device is turned off, determines that the device is near a navigation point. The method turns on the display screen and provides navigation instructions. In some embodiments, the method identifies the ambient light level around the device and turns on the display at brightness level determined by the identified ambient light level. The method turns off the display after the navigation point is passed.

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1. An electronic device comprising: a set of processing units; anda non-transitory machine readable medium storing a navigation application executable by at least one of the processing units of the electronic device, the application comprising sets of instructions for:providing navigation instructio

1. An electronic device comprising: a set of processing units; anda non-transitory machine readable medium storing a navigation application executable by at least one of the processing units of the electronic device, the application comprising sets of instructions for:providing navigation instructions on a display screen of the electronic device;executing the navigation application in a background of the electronic device;turning the display screen of the electronic device off after a lapse of a preset period of time during which the electronic device does not receive any input;identifying an ambient light level around the electronic device when the electronic device approaches a navigation point;turning the display screen on at a brightness level that is determined by the identified ambient light level, andautomatically executing the navigation application in a foreground of the electronic device. 2. The electronic device of claim 1, wherein the non-transitory machine readable medium further stores a set of instructions for: while the navigation application is executing on the electronic device, turning the display screen of the electronic device off after receiving an input to turn the display screen off. 3. The electronic device of claim 2, wherein the set of instructions for turning the display screen off comprises a set of instructions for turning the display screen off after receiving the input, regardless of the navigation application executing in a background or foreground of the electronic device. 4. The electronic device of claim 1, wherein the electronic device approaches the navigation point when the electronic device is within a threshold distance of a point along a navigation route that requires a new navigation instruction. 5. The electronic device of claim 1, wherein the set of instructions for identifying the ambient light level around the electronic device comprises a set of instructions for using an ambient light sensor to detect the amount of light that is present in an environment in which the electronic device operates. 6. The electronic device of claim 5, wherein the ambient light sensor is part of a camera of the electronic device. 7. The electronic device of claim 5, wherein the set of instructions for turning the display screen on comprises a set of instructions for turning the display screen on at a high level of brightness when the ambient light sensor determines that the amount of light is more than a threshold. 8. The electronic device of claim 1, wherein the navigation point is a first navigation point, wherein the application further comprises sets of instructions for: displaying a next navigation instruction for a second navigation point that follows the first navigation point when the electronic device passes the first navigation point; andturning the display screen off after displaying the next navigation instruction. 9. The electronic device of claim 8, wherein the set of instructions for turning the display screen off after displaying the next navigation instruction comprises a set of instructions for turning the display screen off (i) after passing the first navigation point by a threshold distance, or (ii) after a threshold period of time after passing the first navigation point. 10. The electronic device of claim 1, wherein the application further comprises sets of instructions for: identifying the ambient light level around the electronic device when the electronic device deviates from a predetermined navigation route to a destination;identifying a new route to the destination based on a current position of the electronic device;turning the display screen on at the brightness level that is determined by the identified ambient light level;displaying a next navigation instruction based on the identified new route; andturning the display screen off after displaying the next navigation instruction. 11. An non-transitory machine readable medium storing a navigation application executable by at least one processing unit of an electronic device, the application comprising sets of instructions for: providing navigation instructions on a display screen of the electronic device;executing the navigation application in a background of the electronic device;turning the display screen of the electronic device off after a lapse of a preset period of time during which the electronic device does not receive any input;identifying an ambient light level around the electronic device when the electronic device approaches a navigation point;turning the display screen on at a brightness level that is determined by the identified ambient light level, andautomatically executing the navigation application in a foreground of the electronic device. 12. The non-transitory machine readable medium of claim 11, wherein the application further comprises a set of instructions for: while the navigation application is executing on the electronic device, turning the display screen of the electronic device off after receiving an input to turn the display screen off. 13. The non-transitory machine readable medium of claim 12, wherein the set of instructions for turning the display screen off comprises a set of instructions for turning the display screen off after receiving the input, regardless of the navigation application executing in a background or foreground of the electronic device. 14. The non-transitory machine readable medium of claim 11, wherein the electronic device approaches the navigation point when the electronic device is within a threshold distance of a point along a navigation route that requires a new navigation instruction. 15. The non-transitory machine readable medium of claim 11, wherein the navigation point is a first navigation point, wherein the application further comprises sets of instructions for: displaying a next navigation instruction for a second navigation point that follows the first navigation point when the electronic device passes the first navigation point; andturning the display screen off after displaying the next navigation instruction. 16. The non-transitory machine readable medium of claim 11, wherein the application further comprises sets of instructions for: identifying the ambient light level around the electronic device when the electronic device deviates from a predetermined navigation route to a destination;identifying a new route to the destination based on a current position of the electronic device;turning the display screen on at the brightness level that is determined by the identified ambient light level;displaying a next navigation instruction based on the identified new route; andturning the display screen off after displaying the next navigation instruction. 17. The non-transitory machine readable medium of claim 15, wherein the set of instructions for turning the display screen off after displaying the next navigation instruction comprises a set of instructions for turning the display screen off (i) after passing the first navigation point by a threshold distance, or (ii) after a threshold period of time after passing the first navigation point. 18. The non-transitory machine readable medium of claim 11, wherein the set of instructions for identifying the ambient light level around the electronic device comprises a set of instructions for using an ambient light sensor to detect the amount of light that is present in an environment in which the electronic device operates. 19. The non-transitory machine readable medium of claim 18, wherein the ambient light sensor is part of a camera of the electronic device. 20. The non-transitory machine readable medium of claim 18, wherein the set of instructions for turning the display screen on comprises a set of instructions for turning the display screen on at a high level of brightness when the ambient light sensor determines that the amount of light is more than a threshold.