What does sync mean?

Anytime I plug my iphone on my MacBook Pro, it prompts me to few things I would like to understand for full usage of my iphone. Can anyone help me with please?
what does sync mean?
How can I backup contact data in my iphone on the computer to secure
How can I secure against theft?

How you delete content from your iPod depends how you have it set to update:
If you are updating automatically then delete the files from the iTunes library and next time you connect they will automatically be deleted from your iPod. Highlight the file and press the delete key on your keyboard, or right click and choose either Clear or Delete, depending on which version of iTunes you are using.
If you are updating manually, connect your iPod and click on the icon when it shows in the iTunes 7 source list click on the chevron > to the left of the iPod icon This will display the various icons for the iPod itself, Music, Movies, TV Shows and Playlists. Click on Music and you'll see the traditional song view. Find the files on your iPod that you want to remove, highlight them and delete directly.
To select multiple items such as all the songs in an album, click on the first track in the list hold down the shift key and click on the last track to highlight the selection. Then press the delete key.
To summarise, you start by highlighting the song/video/selection in either the iTunes library or on the iPod song list as displayed in iTunes then press the delete key on your keyboard: Deleting songs or playlists from your iPod

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I'm a new user, what does sync mean

My first attempt to ask a question went to cyber space which is a good indication of how little I know about my new toy, iPod touch. I keep reading about Sync & I have no idea what that means, what it does or how it works? Ta in advance

I'm a new user, what does sync mean

I'm trying to sync my i phone. I haven't synced it in a few months, but the notice that comes up is itunes was unable to load data class information from sync services..what does it mean?

I'm trying to sync my i phone. I haven't synced it in a few months, but the notice that comes up is itunes was unable to load data class information from sync services..what does it mean?

In the course of your troubleshooting to date, have you worked through the following document?
iTunes for Windows: "Unable to load data class" or "Unable to load provider data" sync services alert

My iPod doesn't sync it keeps coming up with the message "The iPod 'iPod Nano' cannot be synced. An unknown error occurred (13019)." What does this mean and how can I fix it.

My iPod doesn't sync it keeps coming up with the message "The iPod 'iPod Nano' cannot be synced. An unknown error occurred (13019)." What does this mean and how can I fix it?

I am getting the same error message. Have you figured it out?

I shop for for apps on my ipod touch and when i plug my ipod into itunes and it says erase and sync what does that mean?

hello all,
i normally shop on my ipod touch (because frankly i cant be bothered to plug it into itunes then shop! ) to shop for apps and song and etc. and because i have a wall charger in my room theres pratically no need to go the computer! so sometimes when im on the computer i want to use my ipod touch as well so i charge it on the pc.
well to cut the story short everytime i want to shop on itunes it comes up with this note that says "your ipod is synced with a different pc etc" then it comes up with erase and sync? so my question is what does syn mean? because im worried if i choose ok it would get rid of all my apps
- someone help me!

- It means what it says. Your iPod is synced with a different iTunes library. To transfer purchases to this computer:
iTunes Store: Transferring purchases from your iPhone, iPad, or iPod to a computer
- If you want to make this computer your syncing computer see ths previous discussion:
https://discussions.apple.com/thread/3362492?tstart=0

IPhone 4s not being recognized and cannot be activated for service--what does this mean? I can't sync with iTunes. Please help

iPhone not being recognized and cannot be activated for service--what does this mean? I can't sync with iTunes. Please help.
When I connect iPhone to USB iTunes is giving me the above message. Please advise if you know the fix.
Thanks,
Lina1116

did you find a fix?

TS3992 what does it mean that my iphone will no longer back up to my computer automatically when i sync with itunes?

What does it mean that "my iphone will no longer back up to my computer automatically when I sync with itunes", if I turn my icloud backup to "on"? This doesnt sound like something that will make things smoother? I just recently lost all my calendar events and I am hoping to recover them.

Welcome to the Apple Community.
You can either back up to iTunes or to iCloud, you you choose to back up to iCloud, back up to iTunes will be turned off. Personally, I'd always back up to iTunes unless there is a good reason not to you.

I connected my iPad and iPhone to sync just now and got the message, "The iTunes Library cannot be saved. An unknown error occurred (-54)." What does this mean? I clicked "OK" and the sync appears to have worked properly. Thanks - dalebird

I connected my iPad and iPhone to sync just now and got the message, "The iTunes Library cannot be saved. An unknown error occurred (-54)." What does this mean? I clicked "OK" and the sync appears to have worked properly. Thanks - dalebird (MacBook Pro, g4 17in)

Morning dalebird,
Thanks for using Apple Support Communities.
For more information on this, take a look at this article:
iOS: Troubleshooting backup issues in iTunes
http://support.apple.com/kb/ts2529
iTunes: How to re-create your iTunes library and playlists
http://support.apple.com/kb/HT1451
Best of luck,
Mario

I keep receiving an error message when i try to sync my phone of : 1450 What does this mean?

I keep receiving an error message when I try to Sync my I phone 4. It says Can't Sync 1450. What does this mean? I've had this phone for over a year with no problems.

Yep. Tried that. And just did it again.
Still no joy.

When I try to sync my ipod it says it cannot be synced because "a duplicate file name was specified". What does that mean and how can I fix it??

When I try to sync my ipod it says it cannot be synced because "a duplicate file name was specified". What does that mean and how can I fix it??

I'd start with the following document with that one:
iPhone, iPad, iPod touch: How to restart the Apple Mobile Device Service (AMDS) on Windows

Whenever i try to sync my phone itunes says waiting for changes to be applies, what does that mean?

hi, i just got an iphone 5 today and whenever i try to sync it on my computer itunes says it is waiting for changes to be applied, what does that mean??

Hopefully is just says that for a minute or two ...
It just means that iTunes calculates what needs to be done, and then while instructing the iPhone to do these operations, it is "Waiting for changes to be applied."

When I try to sync my iPhone with my computer I get this message "This iPhone cannot be used because the Apple mobile device service is not started" What does this mean and how can I fix it?

When I try to sync my iPhone 4S with my computer, I get this message: "This iPhone cannot be used because the Apple mobile device service is not started" What does this mean, and how can I fix it?

means that apple mobile device service needs to be started try this article to get it turned back on
Restart apple mobile device service

TS1425 I cannot eject my ipod classic after sync with i-tunes on my pc. It states some of the files are being used by other applications. What does this mean? How can I get it to eject?

I cannot eject my new ipod classic after sync with i-tunes on my pc due, it states, to open files being used by another application. What does this mean? How can I get my ipod to eject?

If it's a one-time "glitch," you can try restarting your computer with the iPod still connected. Try ejecting again after the restart.
If the problem recurs, you may have a process running (other than iTunes) that is accessing the iPod's storage. When connected, the iPod's "disk" is like other mounted volumes. This process may be some type of utility that continously monitors your mounted volumes for security reasons, such as to prevent access by malware.
If you know of such a program that you have running in the background, there may be a setting to exclude your iPod's disk.

HT1386 My iphone wont sync and shows an error number (13019)... What does this mean???

My iphone wont sync and shows an error number (13019)... What does this mean???

http://support.apple.com/kb/TS2830

HT1386 what does it mean by iphone cannot be synced. A duplicate file name was specified

what does it mean by iphone cannot be synced. A duplicate file name was specified

Read https://discussions.apple.com/message/11683771?messageID=11683771&tstart=0#11683 771?messageID=11683771&tstart=0

What does sync mean?

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