HT1808: If you can't update or restore your iOS deviceLearn about If you can't update or restore your iOS device
Currently Being ModeratedFeb 16, 2013 4:42 PM (in response to acosta112)
Network failures on the device?
Settings > General > Reset > Reset Network Settings
Network failures on the computer?
Currently Being ModeratedFeb 18, 2013 2:01 AM (in response to diesel vdub)
Network failures on the device (iPhone 4).
had already done this and does not result
Currently Being ModeratedFeb 18, 2013 3:48 AM (in response to acosta112)
Wi-Fi? Cellular data? Both?
Remove and reinstall the SIM.
Replace the SIM.
Contact the carrier.
Reboot the Wi-Fi router.
Basic troubleshooting from the User's Guide is reset, restart, restore (first from backup then as new).