If you buy this phone you will get 15 month free all things

Jio – The largest 4G network in India offers high  mobile internet connection & an engaging digital ecosystem.
Reliance Jio Infocomm Limited, doing business as Jio, is a LTE mobile network operator in India providing 4G services with pan-India network coverage. Jio is the only 100% VoLTE operator in India, without 2G/3G based services.
Reliance jio give 15 month free services