A phone flashlight or torch is when a cellphone shines a small LED light (usually the camera flash) or uses the screen at its brightest setting to provide light to see by.
This is a super handy function that you probably don’t need often but when you do, it’s nice to have it right there (and not hidden away, obscurely named in your app drawer).
Note: For this customisation, you will need to download the free Simple LED Widget or the donate version.
The lock screen is a feature on the modern-day smart phone that adds a layer of security between a potential user and the contents of the phone. The level of security depends on the setting and is usually negatively correlated to the ease of use – the easier it is to use, the less secure. But you can change it depending on your needs.
On the Sony Xperia Z3, the lock screen is what you see when you first turn on the phone’s screen. It adds a level of security which you can set depending on how secure you want your phone, or you can turn it off completely and turning on your phone will skip past the lock screen straight into the phone.
Anyway, here’s how to change it.
How to Customize Your Sony Xperia Z3 