1. Get two Phones [I used Airtel and Vodafone].
2. Find the spot! Airtel 4G is new. In a country where even 3G is not working correctly, It is very easy to find a place where 4G signals are not coming. It will automatically use 3G.
3. Vodafone 3G gives better speed.
4. Use another phone to video document a speed test app on your phone with 4G. Share it on social media. Keep the original copy for authentication in the phone it was clicked from.
All the Best!!