Hello all, I've just got a new replacement unit for for 3Gs. The battery life for the old one was ridiculous - need to charge it twice to last a full day! Anyhow, the new 3Gs is still running iOS4.1. I'm in 2 minds on whether to upgrade the ios to the latest 4.3.3. A lot of the new features found in ios 4.2-4.3 is not really that important to me, except the one where u can prevent apps from being deleted in Restrictions. Airplay, hotspot, no use to me so far. I'm just worried that some of the apps might not work if i stick to 4.1. But then again, my battery only started acting up when I upgraded the iOS - can't remember if it started with 4.2 but it was horrible with 4.3 (100% charged at 10am, read a few "news" online, kids played with it for an hour & half, took a couple of pix, answered a short call & the battery was dead by 5pm!), Since this is a "new" unit, I'm not sure if 4.3 will have the same effect on the battery as it did with my previous phone. Any thoughts or suggestions would be appreciated. Thanks.