Even using a friend's Telstra SIM, my iPhone 4 constantly downloads data over 3G and wifi when no applications (other than Quota and Settings) are open.
The battery life is also very poor. With wifi, bluetooth and cellular data all off, the phone only lasts 10 hours on standby.
The phone also feels warm at the back all the time, especially when cellular data is turned on.
@shwndh Apple replaced my phone in 7 days. It was still under warranty, so I simply had to send it to them via Australia Post, which itself was completely free because Apple pays for the postage using the pre-paid e-Parcel system! The phone downloaded so much data that I had a $450 excess data bill that I only got out of when I proved definitively that the data downloaded was not my fault. Apple sent me what looks like a brand new iPhone 4, but it may of been a refurbished model.
ShowsOn 7 months ago
I'm so glad I found this. This will help me to explain what's happening to my phone. I have the EXACT same thing happening to my 3Gs. But it's Jailbroken and unlocked so I doubt Apple will be willing to help me.
shwndh 7 months ago
@roblaroni I called up Apple customer service, explained the problem. They emailed me a form to send the phone back to them. Exactly 1 week later a brand new iPhone 4 arrived direct from Apple. When I sent the phone it is logged as an eParcel which means you don't pay a cent to send it away. You don't even pay for the packaging, it is all pre-paid by Apple.
ShowsOn 1 year ago
im having this exact same problem
roblaroni 1 year ago