Yes, Comio C2 is a true 4G VoLTE mobile phone.
Comio C2 comes with big 4000 mAh battery. It offers talk time of up to 20 hours and standby period of about 500 hours.
No. Comio C2 does not have the fingerprint scanner.
No. Comio C2 has a dedicated MicroSD card slot. You can use 2 sim cards and 1 memory card at the same time.