when did the motorola e4 plus come out
Moto E4 The Moto E4 and Moto E4 Plus are Android smart phones developed by Motorola Mobility. They were released in June 2017.[1] The phones are regarded as being low-budget and having a long battery life. The E4 model has a 2,800 mAh battery and the E4 Plus has a 5,000 mAh battery[2]. The Moto E4 has an 8 megapixel camera,[3][4] while the Plus version has a 13 megapixel one.[1][5]
History of mobile phones Prior to 1973, mobile telephony was limited to phones installed in cars and other vehicles.[20] Motorola was the first company to produce a handheld mobile phone. On April 3, 1973, Martin Cooper, a Motorola researcher and executive, made the first mobile telephone call from handheld subscriber equipment, placing a call to Dr. Joel S. Engel of Bell Labs, his rival.[26][27] The prototype handheld phone used by Dr. Cooper weighed 1.1 kg (2.42 lb) and measured 23 cm long, 13 cm deep and 4.45 cm wide. The prototype offered a talk time of just 30 minutes and took 10 hours to re-charge.[28]