I have used this phone this phone more than months I didn’t notice any slow down of mobile or any like that but the screen is not that much powerful my phone screen has broke very soon but it was still working but when by mistake I dropped it near 3 times then phone was switching on but their was display problem other wise the works perfectly without any lag at the price range of 3500 the phone was pretty good and thanx for reading this review hope the review was helpful