I have noticed that ms to the pool you are using is effecting the reported hashrate ALOT. Are you suggesting mobile internet? like 3g 4g etc? I would not recomend it. You also need to find yourself a pool with low MS, preferably around 10-20ms. For me with fiber 1000/1000 thats not hard in western europe. But for you in India i dont know if its possible, you have to test it out.
i am from small town using 4g jio net , no broadband here near by me is it easy to start with 4g
For the first time minier, I would say Yes,that's fine, given the availability of your connections, I guess you have no choice, however If there would be a chance that you could find a broadband connection then better.
The above statement refers to Latency of the pool, you have to look for a pool nearest on your location, if you're unsure you can just try them out and observe which pools have the least latency or MS.