How we wipe your devices
Phonecheck’s software uses the device manufacturer’s erasure technology on supported iPhone and Android models. The exact method depends on the device and its operating system.
On iPhone, Apple’s built-in erase uses a technique called cryptographic erasure. It removes the keys needed to decrypt the previous user’s data, making those files unreadable. This is how Apple’s erase works at the storage level.
Phonecheck supports checks after the wipe for supported phones and logs the result against each device. That gives you a record of which units in your batch completed the process.
What your certificate shows
Phonecheck generates a signed certificate that identifies the device and documents the erasure result. Keep it with your records as evidence of the completed wipe. On supported phones and tablets, Phonecheck issues the certificate once any applicable iCloud lock has been cleared and any eSIM profile has been erased.
Standards and independent testing
Phonecheck built its erasure process around NIST SP 800-88 and IEEE 2883. In one independent test, ADISA assessed Phonecheck 3.11.2a on an iPhone 13 running iOS 18.3.2 and a Google Pixel 7 running Android 15.
