i have lenovo a5000 . my wifi connected, but no internet access . but my other smartphone dont have this problem . i have try factory reset , change dns , reboot wifi modem , and many more . but it not work . i have try to reboot my wifi modem and the problem solved . But , it happen again and i need to reboot my wifi again and again . is it have way to keep my smartphone always have internet access ? please help me