Facebook Push Notifications stopped working? IPhone 4?

All facebook push notifications are selected on my phone, in the account settings they are all checked but since yesterday i stopped receiving notifications, i usually get notifications when someone messages me or comment on a post or whatever. Has anyone else faced this problem the last few days? Cuz everything is checked in the facebook setting and my iPhone settings, is it something wrong with the facebook at the moment or am i the only one having the problem right now?

Why does my iPhone say no service? - 1

My friend wants my iPhone 4 when I upgrade but his on O2 my phone is now unlocked to any service n we've got a sim cutter but I've been practicing with the sim cutter on my old sims n everytime I put it in the phone it says no service?

Can 2 different people have 2 separate itunes account on one shared laptop?

I have a iphone and have an itunes account.

My husband now has a new iphone and wants to set up a itunes account also.

We share the same laptop i.e one user name & password. So when I log in my itunes account shows up.

Can he also have a itunes account on the same laptop but that is completely separate to mine? If so how?

Can people on instagram see the geolocation of a photo?

I have the geotagging option set on my iPhone's camera. I don't have photo map enabled on instagram though. Is there anyway that a creeper can trace down the location from my photo since there's a geotag from my camera on it? Sorry if this sounds confusing.

Why is my music not showing up in the artist section of my iPhone?

I just started adding music to my Iphone 5 and quite a bit of the music will not show up in the Artist section. After searching for it I can usually find what I was looking for in either the Album or Song section, but I find it kind of annoying to have to search so hard just for music. Any idea what's causing this?

I switched computers and my iPhone won't sync

I don't want to brag but I just got a MacBook Pro for my birthday. I used to use windows, the latest version but now when I connect my iPhone to the Mac, iTunes won't let me sync my song into it.

Original iPhone won't start up

It plugs in and the screen lights up to the silver apple, stays on that screen for like 20 seconds then black out. No water damage. Any ideas?

Screen looks like this:

Added (1). How? The image I attached is the only thing I can see/access and it is plugged in but iTunes doesn't recognize it as being plugged in.

Why can't i use emoji's in my twitter name or bio?

I have an iphone 4s (with the latest ios version) and i can pretty much use emoji's everywhere, except in my twitter name or bio! Other people use emoji's in their name, but when i try it stays for a second and then it won't show up. Any way to solve this?