Two-way WiFi, share Internet. 4G: GSM：900（B8）/1800(B3); WCDMA:2100(B1)/900(B8); LTE:FDD,2100(B1),B40/B41. ROM:32GB eMMC Flash. System:Android 8.1. With more RAM and ROM, the device could download and run more app, faster at least 50% than current android 5.1 dvrs.
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