How do you keep your phone vibrating indefinitely? I'm suspecting that the vibrator in my phone is not working properly. Before opening the case, I'd like to diagnose first. I need to make my phone keep vibrating for a while, say, like 2 minutes or more. I haven't found any good solution other than calling this phone with another.

I'd like to keep it vibrating without generating other sound, e.g. ringtone when someone calls you.
Since it is a one time test, suggest a simple macro using Macrodroid

Use + to add Trigger /actions from the corresponding panel

Trigger: Empty Trigger

Actions


Repeat actions &rarr; Fixed number &rarr; OK &rarr; Fixed count say 70
Tap on end loop &rarr; Add action above &rarr; Vibrate &rarr; Long buzz &rarr; OK
Tap on end loop again to add one more action of wait 1 second


From Overflow menu choose Test Macro and your phone should buzz almost continuously for long enough ( increase count in step 1 if required )