Can I use a waterproof case with a screen protector on the S23 Ultra

Compatibility Considerations

1. Built-in Screen Protectors: Many waterproof cases designed for the S23 Ultra come with a built-in screen protector. For example, the Ghostek Nautical slim case includes a screen protector that is integrated into the case design, ensuring a snug fit and maintaining waterproof capabilities[1]. This can be a good option if you want both waterproofing and protection against scratches.

2. Aftermarket Screen Protectors: If you prefer to use an aftermarket screen protector, it’s crucial to choose one that is compatible with your specific case. Some users have reported issues with screen protectors lifting or interfering with the fit of cases, particularly those that are thicker or not designed for curved screens[3][5].

3. Fingerprint Sensor Functionality: Ensure that any screen protector you choose does not hinder the functionality of the ultrasonic fingerprint sensor on the S23 Ultra. Some protectors are specifically designed to work well with this feature, while others may cause issues[5].

Recommendations

- Waterproof Cases with Integrated Protection: Cases like the Ghostek Nautical or Humixx models are recommended as they provide comprehensive protection, including a built-in screen protector and IP68 waterproof ratings[1][4].

- Quality Aftermarket Options: If opting for an aftermarket screen protector, consider options like the Spigen NeoFlex or Whitestone Dome Glass, which are noted for their durability and compatibility with curved screens[5].

- Testing Compatibility: Before finalizing your purchase, check user reviews or community forums to see if others have successfully used specific combinations of cases and screen protectors without issues.

In summary, while it is possible to use a waterproof case alongside a screen protector on the S23 Ultra, careful selection of both products is essential to ensure compatibility and maintain device functionality.