Even if it's set volte don't buy it. It's having over heating issue the prevents usage of mobile when over heated and let's u wait for a while to use it again. "Dear Customer, Galaxy M21 has dual-standby (4G+4G) and supports dual VoLTE. Hope this is of help. Regards, Samsung India"####[["don't buy", 'Buyer Attitude#Recommendable', 'negative'], ['over heating issue', 'Performance#Heat Generation', 'negative']]