Nubia N1 (NX541J) - Manual (Page 35)

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Calculator
On the home screen, select " Tools " > " Calculator " to perform simple calculations.
Slide your fingers on the screen to the left/right to switch between simple calculator and advanced
calculator.
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Flashlight
On the home screen, select " Tools " > " Flashlight ".
Turn on flashlight
On the Flashlight interface, touch the switch button to turn on the flashlight.
Turn off flashlight
On the Flashlight interface, touch the switch button to turn off the flashlight; or slide down to open the
status bar and touch " Close " next to Flashlight.
Enter SOS mode
No matter whether you turn on the flashlight or not, touch " SOS " to enter SOS mode; at this moment
the flashlight shall flash to send out a distress signal.
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System update
On the home screen, select " Tools " > " System Update ".
You can check whether there is the latest software version on the server or not after your phone is
connected to the Internet.
You can also obtain software update packages from our official website, copy the update packages into
the root directory of your phone's internal storage, and select > " local update " to select the update
package.
Note:
1. Please back up your data before updating your software because this could be risky.
2. Software update consumes a large amount of data flow. Please update your software under a Wi-Fi
network.
3. Please make sure your phone's battery level is higher than 30% during the process of software
update.
4. Please do not plug in/out the SIM card, SD card or OTG device; and do not reboot your phone during
the process of software update.
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