Hello everyone,

A few minutes ago I got a problem on my Mac. I got it at the time I was trying to sync my iPhone in iTunes. For arranging the application in line, iPhone as well as iTunes on the Mac should be approved to the same account. Eventually, I always got an error when I am trying to authorized my iTunes account.

What is the problem?

Can anyone share their idea?

Thanks in advance.

Error:

We could not complete your iTunes Store request.

An unknown error occurred (-4).

My old videos can't view in my new iphone 4s, and the new ones sent through text messages are though viewable but are of poor quality. Any assistance is appreciated.

What are the best accessories now for iPad? I want to buy something educational and interesting accessories for my iPad.

Thanks guys for your help. 

the first apple computer,that was created by steve job and steve wozniak in 1976  was auctioned and fetches $374,00. Does this mean that apple is really durable, lasting  and sturdy compare to other computer?

MacBook Air is one of the lightest and slim laptops now.

But it has no Ethernet port.

How can someone connect to the internet if there is no WiFi in his location?

I wanted to buy a new smart phone. However, I am in doubt of having the iPhone 4s since I've heard the new Samsung Galaxy Note.

I want to know such contrasts considering what smart phone is much more advance to have?

Please, can anyone help me in choosing what smart phone it is? 

Retina Macbook Pro would not allow any user to upgrade its RAM and Apple won't support any aftermarket hardware to upgrade its RAM,

what do you think should the buyer consider in choosing between 8-GB or 16GB RAM?

I read that Retina Macbook Pro has incomparable high-resolution display.

But images from many websites would look pixelated when opened in Safari,

How long do you think it would take for the Web developers to adopt in each websites into a high-resolution display?

Why apple laptops are built more thinner and thinner as it progresses through time and generations?

I have an iPod Touch 4 generation, with the camera, and I want to move the pictures from it to my computer. When I go to iTunes and click on my iPod and then the photos tab, I only get an option to transfer folders from my computer to my iPod touch, not from my iPod to my computer. Is there anyway I can do this?