Your Mac does not automatically recognize a Windows phone like the HTC Radar when you plug it in, and as such, digital content needs a little extra help to transfer or sync.
How to Sync HTC to Mac OS X To make things simple when connect HTC to Mac, you can use dr.fone - Phone Manager (Android).This application can not only work well on phone to phone data transfer, but also can help you to transfer HTC files to Mac for backup.