There's no way to put the smartphone genie back in the bottle and there's no way to visually differentiate satelote capable phones. It's going to be easy to smuggle them across borders.
India sees the ability for anyone to anonymously post things on the Internet as all kinds of stupid, and heavily regulates the access to the Internet so any in-country activity can be tracked back to an individual.
And be aware if you travel with a satellite capable device (india apparently also don't like them):
https://www.outsideonline.com/outdoor-adventure/hiking-and-b...