When I bought my DroidX at Costco, it came with a case which has a magnetic closure. I asked Motorola if it mattered how I inserted the DroidX in the case and got the following reply: Thanks for reaching out to Motorola. I’ve reviewed your e-mail and I’m ready to help. We do not recommend using a holster with a magnet for the Motorola DROID X. If you notice that your phone is displaying a screen that you are not familiar with or your backlight continuously stays lit even when you have adjusted the backlight settings your phone may be in close contact with a magnet. There are certain components within the phone that when placed in close contact to a magnet will trigger a different screen configuration and cause your phone backlight to stay lit. Tip: Several phone holsters contain magnets that may also cause your display to change and your backlight to stay continuously lit. This is not a defect of the phone. We hope that you find this information useful and look forward to assisting you in the future. Any thoughts?