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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Tuesday, May 22, 2018

Huawei P20 Pro

Huawei P20 Pro

NETWORK Technology
GSM / HSPA / LTE
LAUNCH Announced 2018, March
Status Available. Released 2018, April
BODY Dimensions
155 x 73.9 x 7.8 mm (6.10 x 2.91 x 0.31 in)
Weight
180 g (6.35 oz)
Build
Front/back glass & aluminum frame
SIM
Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)
 - IP67 certified - dust/water resistant (up to 1m for 30 mins)
DISPLAY
Type AMOLED capacitive touchscreen, 16M colors
Size 6.1 inches, 93.9 cm2 (~82.0% screen-to-body ratio)
Resolution
1080 x 2240 pixels, 18.7:9 ratio (~408 ppi density)
Multitouch Yes
  - EMUI 8.1
PLATFORM
OS Android 8.1 (Oreo)
Chipset
Hisilicon Kirin 970
CPU
Octa-core (4x2.4 GHz Cortex-A73 & 4x1.8 GHz Cortex-A53)
GPU
Mali-G72 MP12
MEMORY
Card slot No
Internal 128 GB, 6 GB RAM
CAMERA
Primary Triple: 40 MP (f/1.8, 27mm, 1/1.7") + 20 MP B/W (f/1.6, 27mm) + 8 MP (f/2.4, 80mm), OIS, Leica optics, 3x optical zoom, phase detection and laser autofocus, LED flash, check quality
Features Geo-tagging, touch focus, face detection, HDR, panorama
Video 2160p@30fps, 1080p@30/60fps, 720p@960fps, check quality
Secondary 24 MP (f/2.0, 26mm), 1080p
SOUND
Alert types Vibration; MP3, WAV ringtones
Loudspeaker Yes, with stereo speakers
3.5mm jack No
 - 32-bit/384kHz audio
- Active noise cancellation with dedicated mic
- 3.5 mm to USB-C headphone adapter incl.
COMMS WLAN
Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot
Bluetooth 4.2, A2DP, LE, EDR, aptX HD
GPS Yes, with A-GPS, GLONASS
NFC Yes
Infrared port Yes
Radio No
USB 3.1, Type-C 1.0 reversible connector
FEATURES
Sensors Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, color spectrum
Messaging
SMS(threaded view), MMS, Email, Push Email, IM
Browser HTML5
 - Fast battery charging 4.5V/5A (58% in 30 min)
- XviD/MP4/H.265/WMV player
- MP3/eAAC+/WMA/WAV/Flac player
- Document viewer
- Photo/video editor
BATTERY
Non-removable Li-Po 4000 mAh battery
MISC
Colors Twilight, Black, Midnight Blue, Pink Gold
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