You can quickly switch off or turn on data on your Infinix Hot 2 x510 Android Lollipop 5.1.1 phone via the “Quick Settings”.
To get this done, swipe down with two fingers from the status bar (the top of your device screen) as shown below :
Thereafter, tap the Cellular network info icon to open the cellular control panel.
Then toggle ON or OFF the cellular data switch as desired.
The screenshot above indicates that Cellular data is ON.
Alternatively, you can get this done by launching the “Settings” app and tap on “Data Usage“.
NB: From status bar, if you swipe down with one finger, you will see all notification messages. You can swipe down again in notification page to access quick settings.
I hope this helps.