Reliance jio has recently launched Jio phone of worth rs 1500 for the users who are unable to use 4g sim JIO in their non 4G mobile phones.It supports volte and is able to voice call on 4G network .It is a double sim phone and we can easily use both 4G sims in both sim slots .It has a rear camera which is not good for taking pictures .Users also cannot have the advantage of using android features in this phone as it is not a android phone even though we can use whatsapp and browse internet in this mobile phone.I dont think so that in this generation it is a good choice for us to buy a button phone of rs 1500 , but it is ok for those users who want to use jio services in their phone.