None of the "normal" radios present in a PC can communicate with cellphone towers as they lack the radios and protocols necessary.Ī SIM Card Reader is only a small part of the hardware necessary to allow a computer to talk to cellphone towers and so "use mobile data" The frequencies used by mobile networks are very different from those used by Wifi or Bluetooth, and the encoding of data and power levels used are also very different. The SIM card does not contain a mobile phone radio, it just contains the information used by a mobile phone radio to connect to a mobile phone network. The question becomes what do you intend to do with that information? How do you intend to exchange that information with someone who can allow you to use mobile data? Just having that information does not mean you can use "mobile data". Step 5: check files to recover when scan is completed.A SIM card reader gets information from the SIM card. Step 3: select the inserted SD card to scan. Only when the SD card is properly inserted into card reader and the card reader USB interface is properly connected to computer, can we succeed in accessing SD card and reading/writing data correspondingly. Using skills: insert SD card into the corresponding slot on one end of card reader, and then connect the USB interface on the other end of card reader to computer. What's more, the function of card reader with SD card inserted is basically the same with that of USB flash drive.įor a computer, the card reader is similar to a USB floppy drive the tiny difference lies in - what the card reader reads is a variety of flash memory cards while USB floppy drive only reads floppy disk. Some of the card readers are even close to that of common USB flash drives. Usually, an SD card reader is not very heavy and the size of it is small. Besides, it supports reading & writing data and allows the access to SD card files.Īctually, a card reader is specially designed to share information on SD card conveniently. It's an external device with corresponding SD card slot and USB interface. Well, SD card reader is a kind of device used specially for reading SD card. It is now widely used in digital camera, DV, MP4, MP3, PDA and smart phone. And it is favored and used by a lot of people due to its excellent characteristics of small size, fast data transfer and hot swap.Īt present, SD card is the most common memory card on the market. On This Page :Īs a new type of storage device based on semiconductor flash memory, SD (Secure Digital) memory card is produced to increase the capacity of digital devices. Now, you can read this post to learn some useful information about SD card reader. Thus, to access to the files on the SD card using the computer, you need an SD card reader. You know that you can’t connect the SD card to your computer directly.
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