- To remove the SIM card, open the back cover of the device using the notch located on the left of the cover.
Note: Your device will come with the Micro-SIM card preinstalled. - Remove the battery using the notch located at the bottom of the battery.
- Slide the SIM card out of or into the SIM card slot.
- Insert the battery, making sure the gold contacts touch.
- Reinsert the back cover of the device, pushing at the edges until it snaps into place. Firmly close the battery cover to ensure the device is water-resistant and dust proof
Note: The AT&T Unite Explore meets US MIL-STD-810G for shock-resistance. Certified IP65 for protection against dust and water jets. Device will not operate under water and should be dried as quickly as possible when wet. Shock-resistant when dropped from ≤ 4 ft onto flat surface. Device may not perform as shown in all extreme conditions. - To attach an external antenna, pop open and pull open the antenna port door, then insert the antenna into the port. The antenna is sold separately.
Note: For more information, see the NETGEAR support article: External Antennas for AirCard products. When not using an external antenna firmly close the accessory ports and battery cover to ensure the device is water-resistant and dust proof. - If a SIM is not in the device the Missing SIM screen will display.