I have an LG Optimus Elite from Virgin Mobile. When at work, I use the 3g network for mobile data. This drains the battery like crazy, as my phone will not last a day without a charge. However, when I am at home and I switch of the 3g and use my wifi for mobile data transfer (e-mails, etc), I can go a few days on a single charge. Is this normal??? I checked, and there is a reasonable 3g signal at my work.