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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Sunday, May 20, 2018

Samsung Galaxy Note8

        Samsung Galaxy Note8

 Samsung Galaxy Note8

NETWORK Technology
GSM / HSPA / LTE
LAUNCH Announced 2017, August
Status Available. Released 2017, September
BODY Dimensions 162.5 x 74.8 x 8.6 mm (6.40 x 2.94 x 0.34 in)
Weight 195 g (6.88 oz)
Build Front/back glass (Gorilla Glass 5), aluminum frame
SIM Single SIM (Nano-SIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by)
  - Samsung Pay (Visa, MasterCard certified)
- IP68 certified - dust/water proof (up to 1.5m for 30 mins)
- Stylus
DISPLAY Type Super AMOLED capacitive touchscreen, 16M colors
Size 6.3 inches, 101.1 cm2 (~83.2% screen-to-body ratio)
Resolution 1440 x 2960 pixels, 18.5:9 ratio (~521 ppi density)
Multitouch Yes
Protection Corning Gorilla Glass 5
  - HDR10 compliant
- 3D Touch (home button only)
- Always-on display
PLATFORM OS Android 7.1.1 (Nougat), upgradable to Android 8.0 (Oreo)
Chipset Exynos 8895 Octa - EMEA
Qualcomm MSM8998 Snapdragon 835 - USA & China
CPU Octa-core (4x2.3 GHz Mongoose M2 & 4x1.7 GHz Cortex-A53) - EMEA
Octa-core (4x2.35 GHz Kryo & 4x1.9 GHz Kryo) - USA & China
GPU Mali-G71 MP20 - EMEA
Adreno 540 - USA & China
MEMORY Card slot microSD, up to 400 GB (uses SIM 2 slot) - dual SIM model only
Internal 64/128/256 GB, 6 GB RAM
CAMERA Primary Dual: 12 MP (f/1.7, 26mm, 1/2.5", 1.4µm, Dual Pixel PDAF) + 12MP (f/2.4, 52mm, 1/3.6", 1µm, AF), OIS, phase detection autofocus, 2x optical zoom, LED flash, check quality
Features Geo-tagging, simultaneous 4K video and 9MP image recording, touch focus, face/smile detection, Auto HDR, panorama
Video 2160p@30fps, 1080p@60fps, 720p@240fps, HDR, dual-video rec., check quality
Secondary 8 MP (f/1.7, 25mm, 1/3.6", 1.22µm), autofocus, 1440p@30fps, dual video call, Auto HDR
SOUND Alert types Vibration; MP3, WAV ringtones
Loudspeaker Yes
3.5mm jack Yes
  - 32-bit/384kHz audio
- Active noise cancellation with dedicated mic
COMMS WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Bluetooth 5.0, A2DP, LE, aptX
GPS Yes, with A-GPS, GLONASS, BDS, GALILEO
NFC Yes
Radio No
USB 3.1, Type-C 1.0 reversible connector
FEATURES Sensors Iris scanner, fingerprint (rear-mounted), accelerometer, gyro, proximity, compass, barometer, heart rate, SpO2
Messaging SMS(threaded view), MMS, Email, Push Email, IM
Browser HTML5
  - Samsung DeX (desktop experience support)
- Fast battery charging (Quick Charge 2.0)
- Qi/PMA wireless charging (market dependent)
- ANT+ support
- Bixby natural language commands and dictation
- MP4/DivX/XviD/H.265 player
- MP3/WAV/eAAC+/FLAC player
- Photo/video editor
- Document editor
BATTERY Non-removable Li-Ion 3300 mAh battery
Talk time Up to 22 h (3G)
Music play Up to 74 h
MISC Colors Midnight Black, Maple Gold, Orchid Gray, Deep Sea Blue, Star Pink (Taiwan only)
Price About 750 EUR
TESTS Performance Basemark OS II: 3374 / Basemark OS II 2.0: 3333
Basemark X: 40890
Display Contrast ratio: Infinite (nominal), 4.148(sunlight)
Camera Photo / Video
Loudspeaker Voice 67dB / Noise 69dB / Ring 71dB
Audio quality Noise -92.5dB / Crosstalk -93.2dB
Battery life
Endurance rating 89h
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