Error messages, boot loops, and fault codes for iPhone, Android, and mobile devices — from update failures to hardware faults.
15 error codes
15 codes
On Google devices, DF-DFERH-01 means the Google Play Store couldn't retrieve information from the server to complete a download or search.
On Google devices, DF-DLA-15 means a problem occurred while downloading an app from the Play Store.
On Apple devices, Error 1 means the restore failed at a low level — often because the requested iOS isn't compatible/signed, or a baseband/hardware issue on cellular models.
On Apple devices, Error 9 means the device disconnected from the computer during the restore, or a security-check failed — frequently a USB/cable or hardware issue.
On Apple devices, Error 14 means a USB connection or corrupted-firmware error interrupted the restore/update.
On Apple devices, Error 21 means the restore failed during the DFU/recovery process, often linked to a USB, security-software, or battery/hardware issue.
On Apple devices, Error 53 means a security/hardware validation failed — historically tied to a Touch ID (fingerprint sensor) or related component that no longer matches the device.
On Google devices, Error 495 means the Play Store failed to download or install an app due to a download/cache problem.
On Google devices, Error 505 means an app couldn't install because another app conflicts with it — commonly duplicate permissions between apps.
On Apple devices, Error 3194 means iTunes couldn't contact Apple's firmware-signing server to verify the update/restore.
On Apple devices, Error 4000 means iTunes/Finder could not update or restore the iPhone, typically because it couldn't connect to the device properly.
On Apple devices, Error 4005 means the restore failed due to a connection interruption — in the same family as 4013/4014.
On Apple devices, Error 4013 means the iPhone could not be restored or updated because the connection to the computer was lost mid-process — often a cable/USB or hardware issue.
On Apple devices, Error 4014 means the restore/update failed due to a communication problem between the iPhone and computer — closely related to error 4013.
On Google devices, RH-01 means the Play Store failed to retrieve information from the server (similar to DF-DFERH-01).
