Push email does not work (sync at 11 1/2 min.)

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http://forums.androidcentral.com – Device: Galaxy s3 and s4 tested 4.1.2 Carrier Verizon Email client tested Touchdown and native Problem: Push email does not work, but will pull data every 11 1/2 minutes Testing performed: installed and configured both email apps - monitored email, same result, tested with external sender as well as internal - same result push email is configured on both clients not connected to wi fi - same result connected to external (home) wifi, - same result findings: if I disable the mobile data and then enable it then push email works for approximately 2 minutes, then starts the 11 1/2 pull p (HowTos)