Wireless charger phone case generally can not exceed 3mm thickness. This is because the principle of the wireless charger is to use electromagnetic induction technology to transmit electrical energy, and too much thickness will lead to a decrease in the efficiency of power transmission, or even normal charging. At the same time, for the sake of safety, the phone case should not be too thick, so as not to affect functions such as heat dissipation and signal reception. It should be noted that different mobile phone brands and wireless chargers may have different thickness limits, and you should carefully read the instructions and relevant information before use to ensure safety and charging effect.