Hello. i just got the iphone Monday and tho i have had an ipad for the last year i am fimililuar with all the app's on apple. but when ever i gets messages on facebook. like statues comments. people posting on my wall i do not get an alert sound on my phone. i have to go into the app to see. i just came off a blackberry so i am so use to getting the alert sound for facebook and emails. with that said i dont get an alert sound with my email either. and before you ask yes i have gone into the setting and turned notifications on and the push notifications are on to. i love this phone the only problem is this and the battery could be better.. can you please help. thank you