Apple watch series 9 cellular mobile data issue

I have an iPhone 15 pro max and an Apple Watch series 9 cellular model. I’m in India and my carrier is Jio. I have connected my Apple Watch with eSIM and same plan as my iPhone. Let me explain two scenarios here.

1. iPhone is switched off and Apple Watch is on. In this case the mobile data on my watch works and i was able to use maps and other apps.

2. iPhone is switched on and mobile data/ wifi turned off. Apple watch is switched on and mobile data is on. In this case when i use maps the Apple Watch shows not connected to internet even the mobile service status is connected and data is on.

Please help me how to use internet on Apple Watch in scenario 2.