ios security crash alert
I was browsing on safari and got a message that stated that " ios security crash alert call 1-800-480-4170 for immediate fix (toll free), I've never seen that before and just recently changed from an iPhone 5S to the iPhone 6. Is this valid or is my phone being hacked. In the past while on the phone with my 5S (and now with my 6), my phone would automatically kick me out of certain apps., or there would be beeping noises while I was having a conversation. Has this happened to anyone else and how can I get this resolved? Any help would be greatly appreciated
iPhone 6, iOS 8.1.3