I have always been able to accept calendar events on my apple products before. My office uses outlook and before I would receive an email and I could open the .ics attachment and touch "add to calendar" . I can still do that on my iPad running 6.1.3 but cannot on my iPhone 4s running iOS 7. Any ideas why or what I am doing wrong. First time I have posted so forgive me if this have already been asked and answered.