Yes, Nokia 8810 4G does have the VoLTE support. You can make calls via VoLTE enabled network easily.
Yes, Nokia 8110 is made of Polycarbonate material, which does not allow power transmission and thus it makes a shockproof mobile phone.
Nokia 8110 is 133.45 mm ( 13.34 cm) long and 49.3 mm ( 4.93 cm ) thick.
Yes, Nokia 8110 4G does have the FM radio.