If it fails, you need to install the phone driver yourself.
You can spend time to long search the manufactures to figure out the proper drivers, or you can have a quick visit to the professional mobile phone drivers provider: OSToto.
It updates the drivers weekly to ensure every driver you get from it is the official and WHQL one.
You can free and safely download or update the USB drivers for Samsung, LG, Asus, Motorola, HTC, RIM, Sony, Nokia, Intel, Black Berry, Fujitsu, Philips, and more other smartphones.
About Driver Update: Driver Update™'s purpose is to provide easy, one-click access to all of the latest drivers for your computer.