You just need to insert the 4G LTE sim card before you can enjoy the 4G LTE serivce. - 4G LTE module: Built-in. - 4G LTE sim card slot: Yes. - 4G LTE Antenna: YES. WiFi/4G LTE. - External Port for TV Box: Yes, Support DVB-T/DVB-T2/ATSC/ISDB Box.
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