Iphone 4S Battery
Does anyone know how I can increase the life of my Iphone 4S battery? It seems to work fine if I am just listening to the Itunes all day but if I get more then 3 text messages or look at my emails more then twice that same day I have to charge it half way through the day. My old Iphone 4 would last me all day checking emails, texting all day, answering calls, & listening to my podcast. I have to know how to fix this this is unacceptable for the iphone I would go back to my old Iphone 4 but I really like siri. Thanks