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

iPhone 13 Pro
F2LX9K3PQ1H2 · 256 GB
Verified
  • Battery health92%
  • DiagnosticsPassed
  • EraseWiped
  • RestoreComplete
device timeline · 7 eventsdetwer

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

01

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.

02

Check, erase, restore

Run the tests, the erase and the restore in one sitting. Each one lands on the device timeline as it finishes.

03

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

The detwer app's summary screen showing 18 checks passed

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.