History of mobile phones
A cellular telephone switching plan was described by Fluhr and Nussbaum in 1973, and a cellular telephone data signaling system was described in 1977 by Hachenburg et al.
Telenor
Televerket opened its first manual mobile telephone system in 1966, being replaced with the automatic NMT system in 1981 and the enhanced NMT-900 in 1986. Norway was the first country in to get an automatic mobile telephone system. The digital GSM system came into use in 1993. The third generation of mobile technology with UMTS system began full operation 2004. The Opera web browser was created in 1994 by Jon Stephenson von Tetzchner and Geir Ivarsøy during their tenure at Telenor, and Opera Software was established in 1995 when they went on to continue development of their browser..Telenor and Huawei conducted a successful test of 5G with 70 Gbit/s Speeds in Lab environment.