When you open Google Play Market it gives you “No connection” error.
And other Google services also stopped working. First, check time. The thing is authentication uses current time, and if your device clock is off, the authentication can’t complete. If this doesn’t help, delete Google service and Play Store cache If this doesn’t help, delete the account and set it up once again. The easiest way to remove the only Google account is to delete accounts.db file. If you can’t sign into the account now, it’s high time to remember if you used Freedom app recently? If you did, you must uninstall it, then install again and run at least once, even though it complains that no accounts found. In my case, everything was back to normal after I reinstalled it.