Tecno i3 standard box package includes Mobile Phone (with battery), USB Power Adapter, USB Cable, Free Screen Guard, Free Back Cover, Earphone, User Manual, Sim Ejector Pin and Warranty card.
Yes, Tecno i3 does have the front camera flash.
No. Tecno i3 do not have fingerprint sensor.
Tecno i3 comes with the latest Android 7.0 Nougat OS. In future, you can update phone OS if the new update gets released from the company.
Tecno i3 comes with 3050 mAh non-removable battery, which can last a day's usage easily.