-Retrieval of unusable storage space by removing previous OS Installers
-Retrieval of unusable storage space by removing old and unused iOS backups from iTunes
-Retrieval of unusable storage space and improve browser performance by clearing caches
-Virus & Malware scan
-Provide an internal inspection of the system for corrosion and liquid exposure
-Cleaning of variable speed fans to improve cooling functionality
-Safe cleaning system internally
-Check internal drive for early signs of hard drive failure, NAND Failure Count, Grown Bad Blocks, and Read Error testing.
-Internal Audio Response Verification
-Screen testing: DisplayPort, Backlight Controller
-Fan Testing: Both high and low speed fans
-Battery: Condition, Health, & Cycle Count
-Graphics: VideoController Response Verification
-Input Device: Keyboard, Trackpad & Critical Error Response Verification
-Lid Angle Sensor Lock State and Magnetic State Response Verification
-RAM Memory Address Test
-Main Logic Board Test
-Current & Voltage Test
-Sensor Response Verification
-Thunderbolt Controller Response Verification
-Touch ID Calibration, Connectivity, ESD Incidence and Provisioning tests
-Wi-Fi Controller and MAC address Response Verification