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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Wednesday, May 16, 2018

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Samsung Galaxy S8

 mobile phone bloggerspot.com
Rating
Average rating is 4.2 stars, based on 203 reviews.
Versions: G950F (Europe, Global Single-SIM); G950FD (Global Dual-SIM); G950U (USA Unlocked); G950A (AT&T); G950P (Sprint); G950T (T-Mobile); G950V (Verizon); G950R4 (US Cellular); G950W (Canada); G950S/G950K/G950L (South Korea); G9500 (China)
Network
Technology GSM / HSPA / LTE
Dimensions
148.9 x 68.1 x 8 mm (5.86 x 2.68 x 0.31 in)
Weight
155 g (5.47 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)
Display
Type Super AMOLED capacitive touchscreen, 16M colors
Size 5.8 inches, 84.8 cm2 (~83.6% screen-to-body ratio)
Resolution
1440 x 2960 pixels, 18.5:9 ratio (~570 ppi density)
Multitouch Yes
Protection
Corning Gorilla Glass 5
- 3D Touch (home button only)
- Always-on display
Platform
OS Android 7.0 (Nougat)
Chipset Exynos 8895 Octa - EMEA
Qualcomm MSM8998 Snapdragon 835 - USA & China
CPU Octa-core (4x2.3 GHz & 4x1.7 GHz) - 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 256 GB (uses SIM 2 slot) - dual SIM model only
Internal 64 GB, 4 GB RAM
Camera
Primary 12 MP (f/1.7, 26mm, 1/2.5", 1.4 µm, Dual Pixel PDAF), phase detection autofocus, OIS, LED flash
Features
Geo-tagging, simultaneous 4K video and 9MP image recording, touch focus, face/smile detection, Auto HDR, panorama
Video 2160p@30fps, 1080p@60fps, HDR, dual-video rec.
Secondary 8 MP, f/1.7, 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
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 Mail, IM
Browser
HTML5
Java No
- 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 3000 mAh battery
Talk time Up to 20 h (3G)
Music play
Up to 67 h
Tests
Performance
Basemark OS II: 3272 / Basemark OS II 2.0: 3376
Basemark X: 42370
Display Contrast ratio: Infinite (nominal), 4.768 (sunlight)
Camera Photo / Video
Loudspeaker Voice 66dB / Noise 70dB / Ring 72dB
Audio quality Noise -92.5dB / Crosstalk -92.8dB
Battery life
Endurance rating 84h
PROS AND CONS OF Samsung Galaxy S8


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