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and similarly in the US Wimax was Sprint's disastrous entry into 4G https://www.rcrwireless.com/20160401/opinion/worst-week-bold-look-back-sprint-wimax-network

• nradov 7y ago
  Which has left Sprint crippled to this day, to the extent they need to merge with T-Mobile to fund a 5G network. The rest of the industry has well learned not to jump too soon.