Check, erase and restore every device you handle.
Plug a phone in and detwer reads it by serial, tests the hardware, wipes it and reinstalls its software. Every step is saved against that serial, so you keep a record of what was done to it.
verify → diagnose → erase → restore → record
- Battery health92%
- DiagnosticsPassed
- EraseWiped
- RestoreComplete
What detwer does with a device
Find out what a device really is, wipe it, put it back to a clean install and keep the record. One USB connection covers all of it.
Verify
Plug a phone in and detwer fills in the model, IMEI and storage from its serial. Nobody copies a number into a lookup site.
Diagnostics
Battery health and cycle count, then a pass or fail for the screen, cameras, sensors and the rest, so the condition report names the actual fault.
Erase
Wipes the device and writes the wipe to its timeline: when it ran and how it finished. An erase cannot be undone.
Restore
Reinstalls the device software so it starts up clean, ready to sell, hand to the next user or send back.
Device history
One timeline per serial number. Look it up, and download its reports and erase records.
How it works
Plug it in
Connect the device over USB. detwer identifies it from the serial, so there is no job to open first and nothing to type.
Check, erase, restore
Run the tests, the erase and the restore in one sitting. Each one lands on the device timeline as it finishes.
Keep the record
Download a report or erase record when a customer or an auditor asks for it.
iPhone & iPad app
Test the device on the device
The detwer app runs a full hardware check on the iPhone or iPad in front of you: pick the checks, follow the prompts, and see pass, fail or skipped for each one on a clear summary.
- Screen: touch, multi-touch, dead pixels
- Battery: health, cycle count, charging
- Cameras: rear, front, flash, TrueDepth, LiDAR
- Sensors: motion, compass, proximity, light, GPS
- Audio: speakers, microphone, headphones
- Connectivity: Wi-Fi, Bluetooth, NFC, calls
Results go to your shop automatically when the device is connected at your bench, or with your 6-digit shop code. No account on the device, and no photos, recordings or location ever leave it. What the app sends· App help

Who it is for
- Repair shops
- Refurbishers
- Recyclers & ITAD
- Insurers
Know what every device is, and keep a record of what was done to it.
Start free. No card needed.