Unless that computer has all your music, you will lose all the music on your iPhone and it will be replaced with their music. So instead, if you just want their music but still keep your music, just drag the music files to your iPhone.
yes you can, you dont have to buy a new simcard when you buy a new iPhone
To sync your iPhone to a different computer without losing pictures or contacts, use MobiKin Assistant for iOS: Install and launch MobiKin Assistant for iOS on the new computer. Connect your iPhone via USB and trust the computer on your device. The software will detect your iPhone and display all data types. Select Photos and Contacts (or any other data you want to sync). Click Export to back up your files to the new computer, or Import to add data without erasing existing content. This method ensures your iPhone data stays intact while syncing with a new computer.
If you just recently got a new iPhone 4, connect it to iTunes and iTunes will identify it as a new phone. If you have previously synced your iPhone 3G with that computer before, then iTunes should give you the option to sync the new iPhone with a backup from your latest iPhone 3G sync. When you do that, your files from your 3G will be transferred to your iPhone 4. Hope that helps :)
Assuming your playlist is in iTunes, just go to your iDevice, and go to the Music tab. There you should be able to syncronise your playlists.
Log-in in to your iTunes account on your new Mac and then sync as normal. You'll be asked if you want to copy stuff from your iPhone to Mac (which you probably want to do) and then you should be able to continue as normal. Remember to authorize your new Mac with your iTunes account as well.
how do I sync new IPOD to current computer library of music
Yes. Just sync your iPhone with your computer and download the 2.2 software. The new software should wipe out the jailbreak, so just re-install it.
I had this problem too. I had iTunes installed already, but when I tried to sync my iPhone, nothing came up on my iPhone screen. I quit iTunes, and unplugged my iPhone, then plugged it back in and opened iTunes again.
If your songs are already in the new library, you will not loose any of your songs.
when you plug your ipod touch into your computer... itunes will autimatically download them onto your computer. you then plug in you new ipod touch, and put them from your comp onto you new ipod yes what this says is rights. the apps would be automatically be on your computer and you would just have to download them on your new ipod!
iTunes cannot help you do this. But FonePaw iOS Transfer allows you to sync/transfer/copy files from iPhone to iPhone, iPhone to iPad, iPad to iPad, iPhone to iPod etc.If you want to transfer data or files from one iPhone to another one, you can use tools like AnyTrans to make it. It won't erase the previous data on your devices. With it, you can also transfer purchased and non-purchased items from iPhone to computer, to iTunes.
You can use MobiKin Transfer for Mobile to transfer contacts from your old iPhone to your new one. Just connect both devices to your computer, launch the program, select "Contacts," and click "Start Copy." It’s quick, safe, and doesn’t overwrite existing data.