(Since the introduction of Kik-like applications, not only Internet companies have competed to simulate, but operators who are unwilling to be channels have also joined this battle without knowing the results. At the 2012 Mobile World Congress, the five major European telecommunications giants jointly launched their own instant mobile phone short message system named "Joyn". The three major operators in South Korea also expressed their willingness to actively participate.)
发表于 2022-8-9 12:30:47
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