В 1957 году Л. И. Куприянович (СССР) создал экспериментальный образец мобильного телефона ЛК-1 весом 3 кг и базовую станцию к нему, связанную с ГТС. В последующих образцах 1958 года вес мобильных телефонов был снижен до 0,5 кг.
In 1957 Leonid Kupriyanovich presented model of a wearable automatic mobile phone (“radiophone”), called LK-1 (not to be confused with the cancelled Soviet spacecraft of the same name). His device consisted of a base station and a portable handset. LK-1 was 3 kg in weight, 20–30 km operating distance, and 20–30 hours of battery life. Leonid Kupriyanovich patented this mobile phone in 1957 (author’s certificate № 115494, 1.11.1957). The base station, in accordance with author’s description, could serve several customers. In 1958, Kupriyanovich made the new experimental “pocket” model mobile phone. This phone had 0,5 kg weight. To serve more customers, Kupriyanovich proposed the device, named it as a correllator.
- The Motorola DynaTAC 8000X was not the fist mobile phone as you can see. But it was firs phone avaliable for buyers.