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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Saturday, May 26, 2018

SAMSUNG GALAXY A7

  SAMSUNG GALAXY A7

Specification:
Network
Technology GSM / HSPA / LTE
Launch
Announced 2017, January
Status Available. Released 2017, January
Body
Dimensions 156.8 x 77.6 x 7.9 mm (6.17 x 3.06 x 0.31 in)
Weight 186 g (6.56 oz)
Build Front/back glass, aluminum frame
SIM Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)
- Samsung Pay
- IP68 certified - dust/water proof over 1.5 meter and 30 minutes
Display
Type Super AMOLED capacitive touchscreen, 16M colors
Size 5.7 inches, 89.6 cm2 (~73.6% screen-to-body ratio)
Resolution 1080 x 1920 pixels, 16:9 ratio (~386 ppi density)
Multitouch Yes
Protection Corning Gorilla Glass 4
- Always-on display
Platform
OS Android 6.0.1 (Marshmallow), upgradable to 7.0 (Nougat)
Chipset Exynos 7880 Octa
CPU Octa-core 1.9 GHz Cortex-A53
GPU Mali-T830MP3
Memory
Card slot microSD, up to 256 GB (dedicated slot)
Internal 32 GB, 3 GB RAM
Camera
Primary 16 MP (f/1.9, 27mm), autofocus, LED flash
Features Geo-tagging, touch focus, face detection, panorama, HDR
Video 1080p@30fps
Secondary 16 MP, f/1.9, 1080p
Sound
Alert types Vibration; MP3, WAV ringtones
Loudspeaker Yes
3.5mm jack Yes
- Active noise cancellation with dedicated mic
Comms
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot
Bluetooth 4.2, A2DP, EDR, LE
GPS Yes, with A-GPS, GLONASS, BDS
NFC Yes
Radio FM radio
USB 2.0, Type-C 1.0 reversible connector
Features
Sensors Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, barometer
Messaging SMS(threaded view), MMS, Email, Push Mail, IM
Browser HTML5
Java No
- Fast battery charging
- ANT+ support
- MP4/WMV/H.265 player
- MP3/WAV/WMA/eAAC+/FLAC player
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