Review on ⚡️ KoolPad Qi Wireless Charger Pad: iPhone Xs, XS Max, XR, X, 8, 8 Plus, Samsung Galaxy S10, S10+, S10e, S9, S9+, S8, S8+, S7, S7 Edge, S6, Note 9, 8, Pixel 3, 3 XL & More by Lisa Starcher

This one has developed some sort of loose contact or short circuit in the mini USB port hole or between the phone and the charging "washer". It works but unstable, not reliable. As several other reviewers have reported, the phone keeps turning on and off when placed on the charger. Instead of a constant charge, messages are displayed indicating that it is constantly switching between "charging" and "not charging". (My phone does not have an additional case and this is the correct model for this charger). Carefully placing the phone on the puck doesn't seem to make much of a difference. Trying many possible positions and placements of the phone on the puck sometimes results in a consistent charge, but it works very inconsistently. It's hard to say which position might work, or why there's only an occasional constant charge. This defeats the purpose of an easy-to-use portable charger, as it requires fiddling with to prevent rapid blinking and crashing. Only worth the money if you like gaming or enjoy weird challenges.