Yes, Micromax Canvas 1 is a true 4G VoLTE mobile phone.
No. Micromax Canvas 1 does not have any heating issue.
Yes, Micromax Canvas 1 comes with a dedicated memory card and you can expand phone memory by another 32GB with the help of the MicroSD card.
Yes, since Micromax Canvas 1 runs on the latest Android 7.0 OS - there is multi windows support.
Micromax Canvas 1 has 5-Inch HD IPS display. It has 1280 x 720 resolution and produces 294 PPI resolution. Notably, the phone has 400 nits of brightness which provides cleaner and sharper images. It also has 2.5D glass.