I have 2 iphones. One is a new iphone. One is an older iphone. I recently transferred/synced songs from my laptop to my new iphone on itunes. I also wanted to transfer the same songs from my laptop to my old iphone. Both of my iphone name is called pauly's iphone. When i click on sync music, i get message syncing paulys iphone with this itunes library will replace media from another itunes library on pauly-pc. An iphone can only sync with one itunes library at a time. Do i click sync and replace? If i don't then i can't transfer any music right? I guess the only issue here is if i try to sync music or transfer my laptop to an iphone while connecting both iphones at once? Thus just don't connect 2 iphones to laptop at once and im fine? Thus when i try to transfer music/video to my new iphone, i get the same message and each time i do, just click sync and replace? Thanks. --- Post Merged, Nov 12, 2016 --- For some reason, only 2 songs synced to my old iphone. None of the 300 plus songs synced at all at the old iphone. Can someone tell me why?