Yes, Gionee X1 does have the USB OTG support.
Yes, Gionee X1 does support Screen Split.
No. Gionee X1 has 2 dedicated slots for the Sim cards and one dedicated slot for the memory card. You can expand phone memory by up to 256GB with the help of the MicroSD card.
Yes, Gionee X1 does have the screen record functionality.