You can insert two SIM cards into both the TRIPLTEK 8 and the TRIPLTEK 9. Here is an image illustrating the correct placement on the tray.
Authorized Distributors North America
TRIPLTEK Store https://www.tripltek.com/shop Amazon.com https://www.amazon.com/tripltek General Pacific Drones https://www.genpacdrones.com/product/tripltek-8-inch-pro-tablet/ Tenacity AG Spray Drones https://www.tenacityag.com/product/tripltek-9-pro/ iGage Survey Equipment https://www.igage.com/ eGPS Solutions https://store.egps.net/collections/data-collectors/products/triple-tech-tablet
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