5 Access to the magic menu
If you want to make your smartphone into a real professional device, you will need to go to the developer menu. Go to settings-about the phone-click 7 times on the developer menu and you become the developer of the phone. You can then improve signal and reception quality, performance and system appearance.
4 UV light
UV lights can be useful if you want to check bank notes authenticity. Stick a piece of transparent tape over the flashlight of your phone. Now paint it with a blue marker. Repeat step one and paint it with a purple marker. Add again 2 layers like that and now you can use it as a UV light.
3 Smartphone spirit level
Most new Smartphones have a spirit level or accelerometer and a gyro sensor. These allow the phone to determine its position in space. You can download specific apps for both Android and iOS and your phone can replace such devices to be useful for small constructions and projects at home.
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