sm56hlpr.exe is installed with the Motorola SM56 modem drivers and provides functions for diagnostic and configuration for this device.
It is obviously an important process for the correct functioning of Motorola devices and should not be removed.
Non-system processes like sm56hlpr.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues