What is my phones secret setting?
Heres how it works: each time you open an app, close an app, switch between apps, and so on, your phone displays a transition animation to take you from one screen to the next. Inside every Android phone is a secret Settings menu called “Developer options” thats filled with all sorts of advanced options.
How do I open secret settings?
To turn this feature on, swipe down from the status bar to access your Quick Settings panel then hold down the Settings gear icon in the top-right corner.
What happens when you dial * * 4636 * *?
If you would like to know who accessed Apps from your phone even though the apps are closed from the screen, then from your phone dialer just dial *#*#4636#*#* it will show up results like Phone Information, Battery Information, Usage Statistics, Wi-fi Information.
How do I know what band My phone is using?
For the Android phone, it could use the app: LTE Discovery, tap SIGNALS, check EARFCN(band number), DL Freq and UL Freq.