Your personal data is quite secure on the Galaxy S25, thanks to various protections put in place by Samsung and even Google. This includes the Knox security platform, which is installed on just about every Samsung phone and works in the background to protect and secure user data. Features like Google Play Protect also ensure that users aren't installing malicious third-party apps.

That said, there's always the possibility of unauthorized access from bad actors, but it's fairly unlikely. Still, it's always important to review your privacy and security settings on your Galaxy S25 to ensure things are as they should be.

According to Samsung, devices like the Galaxy S25 collect personal data that may be stored on-device when using Samsung services, but some may also be securely stored on the cloud.

Per Samsung's Privacy policy, the following information may be collected when using Samsung services:

Account and profile information: name, date of birth, and contact information (phone number or email address)

Shipping and payment information: name, address, contact information, and payment card information (including card number, expiration date, and security code) for processing orders