It works fine on 4G LTE but not on any wifi network. My Gmail/Exchange emails will not download after the Lollipop 5.01 update when connected to a wifi network. As soon as I disconnect from wifi all the emails start downloading again.and I receive sound notifications. I have a Itouch 5 and a Nexus 7 tablet both are wifi only and they are working fine. The Nexus 7 has 5.02 Lollipop on it. So is this either a Samsung problem or a Verizon issue?. I had no issues with KitKat 4.4.4..