I have iPhone 4S with iOS 7.0.4 and is jailbroken since almost the time it's jailbreak came. Till yesterday I did not have any problems with mail and safari apps and worked exactly as expected. But yesterday out of nowhere both of these apps started crashing. They are simply unusable now. I checked on the internet about possible causes and solutions and found that people faced this problem after evasi0n jail break and possible solution was to remove app sync and af2sd (something like that). I did that and it still did not fix it. Booted in safe mode and still does not work. Any help appreciated.