Yes. A factory reset erases all your personal information and restores the phone to its original settings.
When you perform a factory reset, your device is wiped clean of all stored data, including contacts, messages, photos, apps, and personal accounts. This ensures that none of your private information remains on the device, protecting your privacy and preventing identity theft.

In addition to deleting data, a factory reset also returns the phone to its original factory state, just like when it was new. This means all your custom settings, downloaded apps, and personal preferences are removed, leaving only the default system settings and applications.

Important Tip:
Before handing over your phone, take out your SIM card and microSD card (if present). These often contain sensitive information, contacts, and personal files. Removing them helps prevent data leaks and ensures your storage stays with you.

Performing these steps is crucial to keeping your information safe and preparing the phone for the next owner.