Why can't I delete or add songs onto my iPhone through iTunes 11.0.4?

I can delete songs directly off of my iPhone but even if they're deleted, iTunes still says they're on my iPhone. I also can't delete any songs off of OR add any songs onto my iPhone through iTunes. What is happening.

Added (1). I have fully updated both my iPhone and iTunes.

Videos not appearing on iPhone 4s?

I had some videos that I converted to MP4 format. After the conversion they appeared in iTunes under "home videos". I transferred tr videos to my iphone from iTunes. My available memory dropped from 3gigs to 2 gig which shows they are saved on my phone. I can't find them though. I'm searched and looked under videos and photos but nothing. Any ideas?

I need some spending advice

Okay, so I'm 15 and since summer started, my dad has been getting me to work around the house. I have raised some money (about $170) and I really want an iPhone. My current phone barely works and my iPod touch screen is cracked. My dad has allowed me to get an iPhone on one condition: I pay for the $30 per month data plan. I have just applied to two jobs and Dunkin's and McDonalds, so hopefully one of them will take me. I also have been looking into pre-ordering/buying GTA V when it comes out. I'm just not sure if I should invest into an iPhone or GTA V. Opinions?

Walking Dead: 400 days - iPhone game app problem?

I've updated The Walking Dead app on my iPhone and said that there's a new episode called "400 days" which is "Avaliable now" only to go on the app to see how much it would cost to play and seen that it says "Coming Soon". How can it be Avaliable now when you can't even play it? Has anyone else played this on their Iphone yet or have the same problem? How can I get the game?

Where to buy iPhones in bulk?

I'm looking for a reliable Supplier to sell me at
least 500 items. I currently use iRetail Plus (iRetailplus@ymail.com), Apple Wholesale Store (apple-wholesale-store.com) They've been providing very good business for the past year, but they limit the sales to 20 items per 24hrs. I've been selling for 3 years and from a TON of personal experience I DON'T TRUST ebay, Craigslist, amazon or any of those other scam sites!
Can anyone give me a Good Supplier?

Download free movies on iphone?

I only watch a movie once sometimes more but rarely, so any where I can download then for free on my iPhone, cause its bit worth my money to spend like 4.99 on a film I'm gonna watch once…

Which Social Sites should I delete on my Overloaded iPhone?

Well… My iPhone4 has 73 Apps in it and I'm not sure which one to Delete among these social websites Please It's Serious! My iPhone hangs up a lot of times so I wanted to remove the useless apps… Please suggest me to delete the Useless and boring App among these I'd be thankful to you:
FACEBOOK, TWITTER, WHATSAPP, VIBER, KIk, INSTAGRAM, DECIDERR, WECHAT, LINE, SKYPE, YOUTUBE

Trade my iPhone 5 for an s4?

I use to have a note 2 and didn't care for it so I got an iPhone and I love it…
But someone offered me an s4 for trade and I dunno if I should take it or not cause I hear its good but I really like iPhone… Plus iOS 7 will be released soon