Cell Phone,In the 1990s, the 'second generation' mobile phone systems emerged. Two systems competed for supremacy in the global market: the European developed GSM standard and the U.S. developed CDMA standard. These differed from the previous generation by using digital instead of analog transmission, and also fast out-of-band phone-to-network signaling. The rise in mobile phone usage as a result of 2G was explosive and this era also saw the advent of prepaid mobile phones.

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Friday, May 25, 2018

OEM/ODM 4G

   OEM/ODM 4G



Specifications: 

●OS: Android 5.1
●CPU: MTK6735
●Processor: 1.3GHz Quad-core
●LCD: 5.0-inch IPS HD 1280*720 pixel
●RAM: DDRIII 1GB
●ROM: 8GB
●Wi-Fi: built-in wireless 802.11b/g/n
Functions:
●Frequency: GSM850/900/1800/1900+WCDMA2100/850(1900/900) 4G 4G FDD LTE B5/B8/B3/B1(850/900/1800/2100)
●Camera: front 2.0MP/rear 5.0MP for real, 5+8MP for software
●Battery: 3.7V/2500mAh recyclable Li-polymer battery
●SIM: dual SIM dual standby, two size SIM cards
●Colors: white, black, pink
●Sensor: G-sensor
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