52140: Unknown APNs errorERROR: 52140error-52140 page anchorNOTIFICATIONSERROR Error - 52140error---52140 page anchor Unknown APNs errorunknown-apns-error page anchor Possible Causespossible-causes page anchor Unknown APNs error. Possible Solutionspossible-solutions page anchor If the problem persists, please contact customer support(link takes you to an external page).