For the Android phone, it could use the app: LTE Discovery, tap SIGNALS, check EARFCN(band number), ‘DL Freq and UL Freq’ . ‘DL EARFCN and UL EARFCN ‘.
Read moreHow check NTC SIM 4G?
How do I know if my NT SIM is 4G/LTE compatible? Dial *444# to check the SIM and activate 4G/LTE service.
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