No. Tecno Camon i2 does not have the fast charging. It comes with 1.2Amp output charger.
Tecno Camon i2 has a dual rear camera set up. The 13MP rear camera has a f/1.8 aperture while the 2MP rear camera has an aperture of f/2.4.
No. Tecno Camon i2 comes with a triple card slot. You can use 2 sim cards and a MicroSD card at the same time.
Yes, Tecno Camon i2 does have the fingerprint scanner. It also have the face unlock function.