Updated for August 2026. Apple’s current support guidance says Repair Assistant installs calibration data after supported iPhone and iPad parts are replaced. On supported newer devices, same-model used parts can also be reused and calibrated. That makes post-repair software status an important part of the conversation, not just the physical installation.
Key points
- Apple’s current support guidance says Repair Assistant installs calibration data after supported iPhone and iPad parts are replaced.
- Apple says Parts and Service History can show Finish Repair until a supported replacement part has completed calibration through Repair Assistant.
- Apple’s support pages explain that iPhone 15 and later can identify certain genuine parts that were previously used in another same-model device.
- A repair is not fully described by “the screen turns on”.
What “Finish Repair” means
Apple says Parts and Service History can show Finish Repair until a supported replacement part has completed calibration through Repair Assistant. The device generally needs the current iOS or iPadOS version, internet access and sufficient battery to run the process.
What “Used” means on supported models
Apple’s support pages explain that iPhone 15 and later can identify certain genuine parts that were previously used in another same-model device. A Used message is not the same thing as an Unknown part message. Customers should ask what part option is being fitted and what they should expect to see in Settings after the repair.
Why calibration matters
A repair is not fully described by “the screen turns on”. Depending on the supported part and device, calibration can affect expected functionality and the service-history record. The right process depends on the exact iPhone or iPad and the specific part.
Questions to ask before authorising work
Ask whether the proposed part is new, used or aftermarket; whether Repair Assistant applies; what message should appear in Parts and Service History; what functions will be tested; and what warranty the repairer provides. Avoid any claim that every replacement behaves identically across every model.
Need a repair assessment in Bristol?
Tell us the exact model, the symptom, any impact or liquid exposure and whether the device has been repaired before. Request a repair booking, browse device repairs or visit Union Street or Gloucester Road.