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It's main use is to eject the tray that holds the SD card if you use one. There is a small hole in the tray that the key is pushed into to release the tray.
Sorry, there was a problem. Please try again later.To open the side where the SIM card or where the SD card goes to store data
Sorry, there was a problem. Please try again later.You can use it to open a slot for external storage(SD Card) which located on the left top. (tiny hole)
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