A Sim card is responsible for transmitting wireless and mobile services between your Android device and your wireless service provider.
The exact method for installing a SIM card in your android will depend on whether the SIM card is located within your battery compartment or in a SIM card tray.
• Make sure your android is turned off.
• Open the battery partition of your Android device.
• Take the battery out of your android.
• Insert the SIM card into your appliance with the gold contacts facing down, referring to the diagram which is next to the SIM card slot for proper placement.
• Replace the battery into the battery compartment.
• Identify the SIM card tray, which is typically found on the side of your device.
• Insert the pointed end of the SIM into the small hole, which is found next to the SIM card tray.
• Pull out the SIM card.
• Put it into the SIM tray.
• Push the tray back into your android until it clicks perfectly into place.
• Your SIM card is now useable.