My wife's phone got the OTA update last evening early. After the update her phone showed no data network. I powered off the phone (even removed the battery) and booted it back up and all was fine. GPS was working as well. We left the phone in standby all night and this morning, some fifteen hours later, when I woke it up it showed 90% battery life. My phone has not received the update yet, even though we have them both on a single account with a family plan. I don't know if the IMEI numbers have anything to do with the sequence of rollout. Her phone starts with 354, while mine starts with 359. I'm hopeful that the early indications of much improved battery life hold up. Mine will never be as good as hers because mine has BlueTooth turned on and is connected to a Phone Labs Dock 'n Talk while we are at home. It is used to process all our home phone calls - no land line.