ANSWER:

There is nothing you can do but to advise them with good manners, wisdom, knowledge, and diplomacy. Leave them alone and focus on your own! 

My siblings r continuously using phone for time pass like playing games etc in Ramadan also instead of doing Ibadah.If I’m telling them to do ibadah,they r doing for just minutes and continuing the same and sometimes not listening…so what should I do to make them bzy in ibadah, pious or religious…???