first power off the phone.In the second step press Volume Up + Power buttons.and press power buttons. select wipe data/factory reset and press power button. then select delete all user data and press power button.
intex aqua y2 ultra its launch 6/7/2015 . operating version 4.4 screen size 4 inches. battery capacity 1400. cpu spreadtrum sc7731g cpu speed 1.2 ghz…. ram 1gb.. storage 8 gb.. expandable storage up to 32 gb..rear camera – 5megapixel…front– 0.3-megapixel.