Why is there a perception of poor signal quality when holding the Redmi Note 13 in weak signal environments?

Question

Accepted Answer

Many factors will have an impact on signal strength, such as physical obstacles, electronic devices and other sources of radio frequency. In weak signal environments, you will perceive poor signal quality, especially in handheld mode. The lower antenna is affected by hand placement, while the main signal contribution comes from the upper antenna. Issues and discrepancies are concentrated in the lower antenna, resulting in minimal impact on your actual usage scenarios.