let me show you ,how to use your sim card and TF card in Cubot X16
CUBOT x16: Everything you need to know that's new/different about CUBOT newest flagship!
Buy it on EBAY UK :http://www.ebay.co.uk/itm/CUBOT-X16-WHITE-5-4G-LTE-Android-5-1
Amazon DE:
http://www.amazon.de/dp/B017H3WRLM