These are some common tools used to work on this device. You might not need every tool for every procedure.
Diagnose and identify hardware problems with the Palm Treo 755p Troubleshooting Guide.
Identification and Background
The best way to determine if the device is a Palm Treo 755p is to remove the battery and look at the identification tag located in the battery slot.
Physical indicators such as the absence of a protruding antenna, the touchscreen functionality, and the two-color, multi-panel keyboard distinguish the 755p. The 755p is 2.3" wide by 5.1" long by 0.9" deep and weighs 6.4 ounces.
The 755p runs on the Palm Operating System 5.4.9, replacing the previous Verizon model, which ran on Windows Mobile. The 755p was preceded by the Treo 700wx, which utilized a protruding antenna - the most noticeable difference.