Yes, you can use the Jio sim card in Nokia 2.
Nokia 2 comes with 2A fast charger.
No. Nokia 2 does not have the front camera flash but it does have the BSI sensor, which helps to take excellent pictures even during low light conditions.
Yes, Nokia 2 is a VoLTE mobile phone.
It's not a bad phone, this Nokia 2. It's just that there's only so much you can do within a budget this tight.