android - How to find another phone is on or off -

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is possible find phone number on or off.

i think depends on service provider , in india there no service provider gives information. in uruguay possible!! , if possible how can check in india?

thanks in advance.

there no standard determining if cell phone powered on or off. of can tell if cell phone powered off when calling phone fact goes voice mail immediately. there no ring-back when occurs may differ carrier carrier. other issue using determination user can select avoid call if fast enough may give similar results caller.

you may able make determination on whether cell phone on or off using call progress analysis, fore mentioned reasons not 100% accurate. 1 way call progress analysis use call control xml (ccxml) platform has call progress analysis voxeo's prophecy. if @ documentation on ccxml there section on outbound dialing covers call progress analysis. see if there no ring-back before answer determine if phone off.


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