I just bought a Hero today, and it looks like if it's always connected to mobile internet. The "E" icon is always there. What does that mean? I would prefer my HTC to connect only periodically... for example every 15 minutes to check my e-mails and sync my calendar. Is that possible? I think the battery life would much be better if we could do that, and I personally don't need my mobile phone to be connected to the internet 24 hours a day!