A 5G sign is displayed at a Huawei store at a Beijing mall. © Reuters SHUNSUKE TABETA and KENJI KAWASE, Nikkei staff writers June 29, 2022 00:38 JST | China Copy Copied BEIJING/HONG KONG — China Broadcasting Network has begun rolling out a new mobile service to challenge the three state-owned incumbents that dominate the market, though questions remain over whether another state enterprise can shake up the existing market structure. Read Next