The Xiaomi 15 Ultra is equipped with a large-bottom rear camera module, which is a key feature of its innovative design. This camera module takes up more internal space in the phone, which results in the wireless charging coil being positioned slightly lower in the device compared to other smartphones with smaller camera modules.
When using the wireless charging stand, the positioning of the charging coil can sometimes cause the charging process to be less efficient, particularly if the alignment between the phone and the charging stand is not optimal. So the experience is poor on the wireless charging stand. In order to give you a better wireless charging experience, it is recommended that you use the Xiaomi 80W Adaptive Wireless Charging Stand for wireless charging.