Masayoshi Son, who is also CEO of a Japanese carrier, says the network quality in the US "is not something you should be proud of," and directly calls out his rivals.
But Sprint finally ceded its position as the nation's third-largest wireless carrier as T-Mobile edged ahead of it on stronger growth.
The online-retailing giant insists the changes were meant to expand access for families.
Wii U sales are up as of March 31 compared to the prior year, as were software sales, Nintendo reported in its latest earnings release -- but the company is still in some trouble.
Record-level investments are flowing into food delivery startups.
The company's stock falls to an all-time low after last week's report of near-standstill user growth.
The Korean company reported its seventh straight profit decline in the second quarter and will cut pricing for the Galaxy S6 to attract more buyers.
The company will now pay as much as $4,000 to employees who refer women, minorities, and veterans who are ultimately hired by Intel as it works to improve diversity in its workforce.
Sprint names Tarek Robbiati as its new chief financial officer and Gunther Ottendorfer its new chief operating officer, just the latest in a shake-up in the management ranks.
Warning that it faced a difficult market environment, the smartphone maker announces that it's "adjusting" the price of its flagship handsets.