Some handheld devices and applications have built in synchronization support, some need third party software added to support synchronization, and some can't be made to support synchronization. Check your device's manual or contact your system administrator or device manufacturer to find out if your device can support synchronization and, if so, whether it uses SyncML or Activesync and whether you need to install any third party software. Notes If your device supports both SyncML and Activesync, choose only one of these to use. Don't use both. If you previously used SyncML and would now like to use Activesync, see the device configuration details for Activesync in the following document for information about how to make this switch.