Yes, Gionee A1 Plus does support OTG.
Gionee A1 Plus is not a routine phone. It has a beautiful 6-Inch Full HD display & 4550 mAh battery coupled with 4GB RAM & 64GB Internal Memory. However, we feel that you can consider below as disadvantages.
01) It's bulky and tough to handle
02) It cannot record 4K videos
Gionee A1 Plus has a micro USB port.
No. It comes with a very high-quality free Back Cover.