TBB BUREAU BHUBANESWAR, JANUARY 14, 2021  Reliance Jio has once again topped the 4G download speed chart with average download speed of 20.2 megabit per second (Mbps) in December 2020, as per the latest 4G download speed chart published by TRAI.  The average 4G download speed achieved by Jio in the month of December 2020 is more than double the ...

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