Yes, Micromax Q4310 is a dual sim mobile phone.
Micromax Canvas 2 comes with 3075 mAh battery which is enough for a day's usage. It offers talk time of up to 8 hours on 4g network and about 250 hours stand-by time.
Yes, Micromax Canvas 2 2017 is a VoLTE mobile phone.
Yes, Micromax Canvas 2 is 4g mobile phone.
Yes, Micromax offers 1 time replacement during first 365 days of your purchase.