"Wifi Only Xoom upgradable to 4G LTE?"에 답변Carry one of them 4G hotspot devices in you pocket. I had one from Clear networks. It handled eight devices and was about the size of a pack of smokes. The service was around fifty bucks a month/unlimited. Worked good for me and I did not have to pay twice as much for Verizon's 4G.
"Why I can't find 3G SIM Slot in my Motorola Xoom?"에 답변Mine is a referbished Verizon model. It has wifi and an empty sim slot by the SD slot. I only use'wifi for now but when I was talking to Verizon they said I can get 4g on it. Also, on my wifi scan screen it always shows me the Verizon carrier and strength. I also think that my map/GPS can use the Verizon network to download maps even though I don't have service because no matter where I am I can literally watch the map fill in as it downloads.