The ZTE MF636BP device has a MicroSD card slot that you can insert a MicroSD memory card and use it to store your documents and files. This is gives you a useful portable storage device.
Note: MicroSD HC cards up to 4GB can be used.
Open the MicroSD slot on the side of the USB Mobile Card Carefully insert the card into the slot. Make sure the card is aligned as shown below:
Close the card slot cover. When you plug in the device to your computer, the device will appear as a drive on your system. Use Windows explorer (Windows customers) or Finder (Mac OS customers) to view the files on the device.