As per your concern, we want to inform you that your device has a Proximity sensor, It's located at the top of the phone, although the exact position will vary by model. Clean the front of the device with a clean, soft cloth. However, kindly perform the following steps to resolve your issue:
Diagnosing issues with the proximity sensor from the Samsung Members app: Step 1. Open the Samsung Members app and select Get Support at the bottom of the screen. Step 2. Tap View tests located under Diagnostics. Step 3. Select Proximity recognition to automatically begin diagnostics. Step 4. Follow the on-screen directions and put your palms close to, but not touching the top of the screen. Step 5. After finishing diagnostics, you can immediately check your device status results on your screen.
Remove any accessories: Third-party protective films, cases, stickers, or glass screen protectors may block the sensor and should be removed. It is recommended to use Samsung Authorized accessories only.
If the issue persists kindly report the problems with a log file. To share a log file, click on the Samsung Members Application (Open Samsung Members Application > Support> Tap on error report > Type your query > Send).
