I've heard that a large number of people are told (by nearly every provider) that the resolution for the update issue is a factory restore. The only way to resolve this issue is with a new SIM card.
If you're having problems sending or receiving email on Gmail, please try the following: Make sure you have a working data connection by opening a browser and performing a search.This will be enabled by default if the integration type supports push.Email sync timeframe: Adjusting this setting controls the amount of mail that will be pulled down from your account to the application.I’m not sure if these settings were changed intentionally by Google to clean up what the designers considered to be “notification clutter” or if it was just an honest mistake.Either way, here’s how to fix your Gmail notifications. However, if you leave your phone on a solid surface, like a desk or table, without charging it, your phone will eventually stop polling for new emails. If you’re like me, your phone is huge and too uncomfortable to leave in your pocket while you’re sitting at your desk.