4G Network Radio T60 Android 8.1 Walkie Talkie Work With Zello REAL-PTT Echolink

PoC function Support zello, smart PTT, pocstar etc. 4G: FDD-LTE B1/2/3/4/5/7/8/12/13/17/18/19/20/25/26/28A/28B/66, TDD-LTE：B34/38/39/40/41. NETWORK & CONNECTIVITY. Network Bands 2G: GSM 850/900/1800/1900MHz.

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