Yes, your Apollo Pro XL is compatible with our Smart Phone Holder.
To install, follow these steps:
Slide the attachment over the top of the Bluetooth console – the attachment should sit on top and fit snugly around the edges, like the image below:
On the back of the Smart Phone Holder there are two holes – make sure these two holes align with the two holes on the back of the Bluetooth console.
Using the bolts provided and a screw driver, screw the Smart Phone Holder attachment to the Bluetooth console. Make sure the screws are tight before use to ensure secure and safe operation.