I have a strange problem on my Samsung J2 Android phone. Although apps like WhatsApp and some games which require Internet work, none of the Google Apps like Google, Chrome, YouTube and Play Store are working. Whenever I open the Google apps, it shows "Check your internet connection" although my mobile data is on. But, on connecting my phone to a Wi-Fi network, these apps work. How can I fix this?
P.S. One more important thing: When I open Chrome, I get a message saying ERR_PROXY_CONNECTION_FAILED.