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HSPA+ in the cellular 850MHz band (as well as 2G 1xRTT and GSM in the 850MHz band).It will not work on LTE bands Band 2, 4, 10, 25, and 30
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4G would only work on rare occasions and not too
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One final tip is to use a small fan to keep your phone cool - between the Sleek 4g putting out heat and running a hotspot you can cook a phone on a warm day, so we use a small 5" USB fan pointed at the phone to keep it from overheating
-
HSPA+ in the cellular 850MHz band (as well as 2G 1xRTT and GSM in the 850MHz band).It will not work on LTE bands Band 2, 4, 10, 25, and 30
-
4G would only work on rare occasions and not too
-
One final tip is to use a small fan to keep your phone cool - between the Sleek 4g putting out heat and running a hotspot you can cook a phone on a warm day, so we use a small 5" USB fan pointed at the phone to keep it from overheating