Something must have updated and changed my settings. Comcast email and fb will only load if my wifi is on. Will not load otherwise. I have unchecked sync only in wifi but still not loading with 4g. Where else can I look for a setting that had been changed... I absolutely hate when they update something and it changes settings.... Rotten it is!
Look in your battery and data manager and go to the data delivery and make sure the "data enabled" is checked. Also, turn your data saver off. If you have a third party application for battery saving functions, try uninstalling that as well.