Khaberni - Are you thinking about selling your old phone or giving it to someone else? You might think that pressing the "factory reset" option is enough to remove all your data, but the reality is more complex, especially in an era where mobile phones have become our electronic fingerprint, containing everything from photos and conversations to bank accounts, location data, and other detailed aspects of our lives.
This makes disposing of your phone without adequate precautions akin to opening a window for strangers to spy on your life. A single button press might not erase anything; the phone you sell today could retain your photos and messages, recoverable within minutes tomorrow.
Why doesn't a factory reset erase everything?
When you delete files from the phone, the operating system doesn't actually remove them from memory, but merely deletes the address pointing to these files, and considers their space empty and writable in the future.
Recovering these deleted files does not require complex technical expertise, as there are dozens of free applications that enable the recovery of photos and files.
More dangerously, there are other data you might not notice, such as passwords stored in the internet browser, automatic login data in various applications, and also banking application data stored in shopping apps and sites.
Generally, iPhone devices differ from Android devices in the wiping process; iPhones rely on automatic encryption from the start, and when you factory reset, the encryption keys are deleted, making the stored data unreadable even if it remains in memory.
Therefore, wiping on an iPhone is inherently reliable, but with the condition of disabling the Find My iPhone feature before wiping. Android devices, however, are more diverse and complex; older or unencrypted devices may leave retrievable data after a reset, while modern devices rely on automatic encryption.
However, the actual level of protection is linked to the strength of the screen lock; a weak password facilitates access to your data. The most common mistake is performing the wipe before removing your Google account, which activates the "reset protection" feature that prevents the use of the device unless the original account data is entered.
The right way to remove your data:
1- Keep a copy of your data
Before any action, make sure to take a backup of your data so you don't lose your contacts, messages, and personal settings.
For Android users, use Google Backup to move data to Google's cloud, transfer it to Google Drive, or to an external storage unit.
For iPhone users, rely on iCloud to create a comprehensive backup to ensure a smooth transition to your new device. Don't forget to remove the SIM card that contains your contacts and carrier data. Also remove the external Micro SD storage unit.
2- Manually log out of accounts
Make sure to log out from all sensitive applications especially banking apps, social networking apps, and messaging applications; some apps keep session data in special areas not affected by normal deletion.
3- Unlink cloud accounts and paired devices
For Android users, go to (Settings > Accounts > Google > Remove account). For iPhone users, go to (Settings > click on your name > Stop the Find My iPhone feature > then log out from Apple ID). And ensure to disconnect the phone from your smartwatch or Bluetooth headphones.
4- Comprehensive phone wipe
For iPhone users, go to Settings > General > Transfer or Reset iPhone > Erase All Content and Settings.
Android users should go to Settings > General Management > Reset > Factory data reset.
In addition, be aware that if the device is old and runs on Android 6 or earlier, you should manually encrypt the phone from Security settings before performing a wipe to ensure data is not recoverable. After restarting, the welcome screen should appear as if it's a brand new device.
Finally, make sure to collect the original box, charger, and accessories; this gives an impression of reliability and raises the phone's price.
Many people dispose of their devices which no longer work directly despite the dangers of doing so; once the phone is repaired or even if someone manages to unlock it, they can access all the stored data.
If the device is still functional, but the touch feature on the screen is damaged, use Google's Find My Device service or Apple's Find Device via any browser to issue a comprehensive erase command for the device.
You can also use Recovery Mode by connecting the device to a computer and using iTunes for iPhone, or volume and power control buttons for Android to perform an erase from the boot system.
If the device is completely damaged and you aren't able to turn it on, the best option is physical destruction by opening the device and physically damaging the internal storage chip. But make sure not to puncture the battery to avoid explosions or toxic gases; however, it is best to go to a certified electronics recycling center.
Your old phone carries all the details of your life; which deserves a few extra minutes to secure, to ensure that your transition to a new device does not leave behind a privacy-threatening gap.
