Gmail for iPhone has just got a new connection bar at the bottom of screen in Safari. This new connection bar lets you know whether your email has been sent or whether your iPhone has a working internet connect.
It automatically disappears after displaying the info you want. This feature is available for all idevices running on iOS 4 or later firmware version.
It also appears when your phone is offline, back online and sending, and then again when it finishes sending all messages:
You can see this improvement by visiting gmail.com from your iPhone or iPod Touch’s browser (iOS4 only). Don’t see the new changes yet? Try clearing your cache and refreshing the page. And if you like using Gmail in mobile Safari, get to it faster by tapping the “+” at the bottom of the screen and then “Add to Home Screen.”