Sandisk 4GB MicroSDHC Memory Card with SD Adapter (BULK Packaging):Not all devices support microSDHC 4.0GB cards. Some devices support SD HC but NOT 4 GB in size, but only 2 GB. PLEASE CHECK BEFORE BUYING Please contact your device manufacturer for details. To ensure compatibility, look for the microSDHC logo on the product or packaging of your new phone or PDA. We CANNOT replace cards once they have been inserted into a device. Please make sure that your devices support SDHC cards before purchasing this memory card! Many buyers did NOT READ THIS DESCRIPTION, and then their device is NOT Compatible, and they blames us. PLEASE CHECK PRIOR TO ORDERING