Has anyone else experienced an extreme slowdown with their iphone phone after the new IOS update?. Mine worked fine before but now it is so damn slow! It takes a good 30 seconds to even save a new contact and it is failing to send texts and emails from time to time? Any suggestions or should I just upgrade (probably what they want anyway...). It is really getting irritating as I use the 4 for business, I have a 4s I use as my personal cell that I have had no issues with at all.