No. Gionee A1 Plus is not a water-resistant phone.
Yes, Gionee A1 Plus does have a hybrid sim slot.
Gionee A1 Plus is a fully metal body phone and it does support fast charging, too. Besides, it has huge 4550 mAh battery. So, you may notice a minor heat issue while charging the same but otherwise there were no heat issues reported during our review.
Yes, Gionee A1 Plus is made of Aluminium Alloy.