There are noises during a call.

Check the following:

Are you near a strong electromagnetic source (such as a TV, a microwave oven, etc.) during the call? Move to another location to reduce the interference effects.

Check the status of signal reception. If necessary, move to another location where reception is better.

Poor reception.

Check the following:

The network signal is too weak at your current location. In a basement or near a tall building, for example, wireless transmissions may not effectively reach the signal.)

The network is busy at the current time. (During peak times, for example, there may be too much network traffic to handle additional calls.)

You are too far away from a base station for your network operator.

Echo or noise.

Check the following:

Poor network trunk quality on the part of your network operator.

Poor local telephone line quality.

SIM card error.

Check the following:

SIM card malfunction or damage.

SIM card not properly inserted.

Dirt on the SIM card contacts.

There are echoes when using VoIP (Voice over IP) phone.

Check the following:

Try using VoIP in a more open space or with earphones to get the best reception and quality.

Troubleshooting information 79

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BenQ P51 manual There are noises during a call, Poor reception, Echo or noise, SIM card error

P51 specifications

The BenQ P51 is a standout device in the realm of portable projectors, designed to deliver exceptional performance and versatility for both personal and professional use. One of its primary features is its Full HD (1080p) resolution capability, which ensures that users can enjoy crystal-clear images and vibrant colors, making it ideal for movie nights, presentations, and gaming sessions. The projector’s compact form factor makes it easily portable, fitting perfectly in a backpack or briefcase, allowing users to take their cinematic experience anywhere.

Equipped with advanced DLP (Digital Light Processing) technology, the BenQ P51 provides high brightness levels, often exceeding 3000 lumens, allowing for use in various lighting conditions, from dimly lit rooms to bright environments. This high brightness combined with a higher contrast ratio enhances the depth and detail of images, resulting in a visually captivating experience.

Another significant characteristic of the BenQ P51 is its multiple connectivity options. It offers HDMI, USB, and wireless connectivity, enabling users to easily connect their laptops, smartphones, tablets, or media players without hassle. This versatility supports a wide range of multimedia formats and enhances interactive presentations, especially with its built-in Wi-Fi capability that allows for seamless streaming.

The projector also boasts impressive battery life, crucial for on-the-go use, offering several hours of projection time on a single charge. This mobility is further supplemented by its user-friendly interface, which simplifies the setup process, making it accessible for users of all technical levels.

Additionally, the BenQ P51 features a built-in speaker that delivers decent audio quality, although users can also connect external audio systems for a more immersive experience. The projector’s lens is designed with a short throw ratio, enabling it to project large images from close distances, making it practical for small spaces.

In conclusion, the BenQ P51 combines portability, high-quality visuals, and versatile connectivity, making it an excellent choice for users seeking a reliable projector for various applications. Whether it's for casual home entertainment or professional presentations, the P51 stands out with its robust features and user-centric design, ensuring that users can project their creativity and presentations with confidence.