I understand sprint is in the middle of adding 2xCA on 2.5GHz. If I am not wrong, sprint has on average 120 Mhz of spectrum in the 2.5 GHz band in 90 of the top 100 U.S. markets.
2.5 Ghz may not propagate far but the spectrum is excellent for capacity.
Instead of deploying 2x20, why not roll out 3x20 and if i am being way too optimistic 4x20. Kill the competition basically and make you use of this large swath of spectrum now, instead of doing it in pieces while the competition zooms past them.
What is stopping them to do so ?
What are are the technological challenges to deploy 2x20, 3x20 simultaneously ?