IPhone 4s will not wi-fi synch. Keeps "Looking for (my name's) iMac.

Question

Currently have an iPhone 4S which will not wi-fi synch to iTunes on my iMac.
My situation is as follows:
-  iMac running OS 10.7.2 connected to a Time Capsule
-  iTunes 10.5
-  I have enabled/applied wi-fi synch in iTunes
-  The iphone will synch via USB
-  When I disconnect the iPhone from the computer and connect it to a power source, the device disappears from iTunes
-  When I select "Synch Now" on my iPhone, I get the spinning wheel as my iPhone is "Looking for (My Name's) iMac".  The device never shows up in iTunes.  This occurs for several seconds and then stops.
-  End result, is that my iPhone never wi-fi synchs.
What am I missing?  Any help would be much appreciated.
Thank you,
Bruce

Answer 1

Came home from work, woke computer from sleep and started iTune.  iPhone "Sync Now" button went from grey to black.  When I pressed the "Sync Now" button, the same symptoms as I described above occurred.
I then tried to sync by going to iTunes>File>Sync (my name's) iPhone.  iTunes found my phone, my phone showed up under "Devices" and the wi-fi sync was successful.
Everything appeared to be working, so I turned off iTunes and allowed my computer to go to sleep.
After a period of time, I woke my computer from sleep and restarted iTunes to see if wi-fi synch still worked. NOPE, not at first.  The "Sync Now" button immediately went from grey to black as before, but, my iPhone was no longer listed under "Devices" and my iPhone would not sync when the "Sync Now" button was pressed.  However, after iTunes was open about a minute or so, my iPhone showed up and wi-fi sync worked again.
Sooooooooo......basically wi-fi sync appears to be a waste of time.  I fail to see the functionality of it unless you never allow your computer to sleep and you keep iTunes running all the time. It just takes way too long for iTunes to finally find my phone after waking my computer from sleep and starting iTunes. It was much faster by hooking up the old way!  All this just to perform a manual sync!
Auto syncing is a not even an option if you allow your computer to sleep and iTunes is off.
Is this how it is supposed to work?  Anyone else?  Am I wrong?