There are a few methods you can try to locate hidden cameras using a CITYCALL I8550:
Use a camera detection app: There are several camera detection apps available for CITYCALL I8550 that can scan for hidden cameras. These apps use your phone's camera and sensors to detect any unusual activity that may indicate the presence of a hidden camera.
Check for physical signs: Look for small, unusual objects or abnormalities in the room, such as holes in walls or objects that seem out of place. These could be indicators of hidden cameras.
Use the flashlight test: Turn off the lights and use the flashlight on your CITYCALL I8550 to scan the room. Hidden cameras may reflect the light and be visible as a small dot of light.
Use radio frequency (RF) detection: Some hidden cameras transmit a radio frequency, which can be detected using a RF detector. You can purchase a RF detector online or at a security store and use it to scan the area for any unusual radio frequency signals.
It's important to note that these methods may not be foolproof and may not detect all hidden cameras. If you have concerns about hidden cameras, it may be best to seek the assistance of a professional security expert.