A quick feedback will be appreciated: See the first attached picture - As Explit asked before, there is actually a possibility of adding cellular network, but 3G instead of LTE. (Also LTE involves too many bands across different regions, but 3G is more unified.) On the open connectors on the right hand side of the picture, we can put a 3G modem on it. And another slot will be made next to the micro SD slot. See the second attached pic. The question is: Is that of your interest to have a 3G cellular function with a reasonable (small) cost? Or you prefer WiFi only? Also worth note that due to the limitation of this old PCBA, we can only use a dual 3G band modem, therefore I can't make a universal 3G model, will be 1 model for NA and LATAM, and other model for RoW. Please give us your feedback, as we are close to launch the product... P.S: Anyone notice the memory chip on the first pic? It's KLMDGAGEAC-B001 and it's 128GB