Yes, you can use 2 different WhatsApp accounts in iTel S41. Not only that, you can use 2 different Facebook, Instagram and Twitter accounts as well.
Yes, iTel S41 is a VoLTE supported phone. You can enjoy Jio video calling easily.
No. iTel S41 does not gorilla glass but it's display is scratch resistant.
Yes, iTel S41 does have the LED flash with the front camera.
iTel S41 weight is just 155 Grams.