I upgraded my 4s to a 4 about a month ago. I changed over all settings and my watch face. I was getting about 5 days battery life out of my 4s. When I switched to the 4 I was maybe getting 3 days. I finally figured out the face I had been using was causing the drain so I switched to the stock faces. I have tried maybe 10 faces in the garmin store and I always lose a huge percentage overnight with each of them. Ones I never had a problem with on my 4s, ones made by garmin, etc.. When I use the stock faces I get close to 6 days battery life.
Anyone else have this problem? I thought the 4 was supposed to have better battery life than the 4s.