On Friday, I finally decided that I was done with the iPhone 4S. I had switched from Verizon to Sprint for their unlimited data and the fact that my employer had a 25 percent discount with them that would save me about $16 a month on my bill. I had been with Sprint for 6 months last year when I got the Evo 4G. Their 3G network was fine at the time and I was very happy with them. I just got to where I was missing the iPhone and came back in December of last year. Well, I preordered the 4S immediately when it went on sale and was more than willing to pay an ETF to Verizon to lock in unlimited data and the 25 percent employee discount on Sprint. After one week of Sprint's painfully slow 3G network and the very disappointing battery life of the 4S, I decided to go back to Verizon. I returned my Sprint iPhone 4S 16GB to them yesterday and had to buy another iPhone 4 on Craigslist since I had sold my other one two weeks prior. I was lucky enough to find a 32GB mint white one that was only two months old for $325. So I called Verizon and had my service reconnected and imagine my surprise when the CSR told me that as a bonus for returning to them, he would make my upgrade eligibility date immediate. I was shocked and had to confirm it back to him. Yes, after just under 6 months into my contract, I am upgrade eligible right now. I was so happy. That was just huge. I charged my new iPhone 4 up last night and at this point have 15 hours of standby with 1 hour of usage and my battery is still at 94 percent. With the 4S, I would be at about 65-70 percent. Not horrible, but coming from the 4 just being very spoiled. Sorry for the novel but I just felt that I wanted to share my thoughts about this.