Yes, Gionee A1 Plus is a true 4G VoLTE mobile phone and you can use VoLTE without any problem.
Yes, Gionee A1 Plus does have quick charging. It takes less than 2 hours to fully charge its huge 4550 mAh battery.
Thanks to Quick Charging support, it takes just less than 2 hours to fully charge the huge battery of 4550 mAh of Gionee A1 Plus.
Gionee A1 Plus weight is 226 grams. It is mostly because of it's huge 6-Inch display size and humoungous 4550 mAh battery.