Visited the Shanghai Telecom Museum and found that the telephone bureau was there in the 1930s and it was not long before Bell invented the telephone in 1877. Shanghai 1882 had a telephone bureau. Also saw the earliest mobile phone big brother in the 1980s, bp lager public phone booths, etc. have become history. However, it is said that the Telecom Museum, telecom broadband-related mobile phone history switch router Shanghai Telecom cellular data history is still less displayed, most of them are telegraph and telephone history.