The history of the mobile phone In 1908, a man claimed to have invented a wireless telephone but people just thought he was crazy. In the 1940s, engineers working at AT&T, the telecommunications giant, 2...... (develop) cells for mobile phones, which, at that time, 3........ (be) really just two-way radios that 4....... (allow) for communication between people such as taxi drivers and the emergency services. The world’s first mobile phone call was made on April 3,1973 by a senior engineer at Motorola. The phone 5...... (weigh) 1.1 kg, 6........ (take) ten hours to charge and only 7...... (give) you half an hour of talk-time. This first call 8....... (set) the stage for the future and researchers 9......... (know) that if they could make it smaller, the mobile phone would have a huge market. The first mobile phone networks only 10....... (have) one very powerful base station covering a very large area, instead of relying on base stations with separate cells as exist today. Motorola 11...... (go) on in 1983 to be the first company to mass-produce mobile phones with its first commercial phone, which 12........(cost) an impressive $4,000.