Which country has got most balanced 5G spectrum?

China has one of the largest 5G networks geographically speaking. South Korea was the first country to have 5G networks and devices that used them at the same time.

Unlike earlier wireless generations, 5G requires a mix of spectrums across low (sub 1GHz), medium (3.5Ghz) and high (mmWave) bands .

T-Mobile has been named the top 5G provider by numerous independent research sources, including Ookla and umlaut. The carrier has a rich cache of mid-band spectrum thanks to its 2020 acquisition of Sprint Corp. in a deal valued at $26.50 billion.