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Samsung I5510 Galaxy 551 vs Nokia C21

2G Network GSM 850 / 900 / 1800 / 1900 SIM1: GSM 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 900 / 2100 HSDPA 850 / 900 / 2100  
4G Network LTE  
Available
Dimensions 169.9 x 77.9 x 8.8 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)  
Weight 117 g 195 g  
Display Type TFT capacitive touchscreen, 16M colors IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch  
Display Size 240 x 400 pixels, 3.2 inches - - QWERTY keyboard - Accelerometer sensor for UI auto-rotate - Touch 6.5 Inches   720 x 1600 Pixels (~269 PPI)  
Memory 32GB Built-in, 2GB RAM  
Card slot microSDXC (dedicated slot)  
GPRS Class 10 (4+1/3+2 slots), 32 - 48 kbps Yes
EDGE Class 12
3G HSDPA, 7.2 Mbps; HSUPA
WLAN Wi-Fi 802.11 b/g/n, DLNA, Wi-Fi hotspot Wi-Fi 802.11 b/g/n, hotspot  
Infrared No
BlueTooth Yes, v2.1 with A2DP v4.2 with A2DP  
USB Yes, v2.0 microUSB microUSB 2.0  
NFC No  
GPS Yes + A-GPS support  
Main Camera 8 MP, LED Flash   HDR, touch focus, Video (720p@30fps)  
Front Camera 5 MP, LED Flash, Video 720p  
OS Android 11.0 (Go edition)  
Chipset Unisoc SC9863A (28nm)  
Processor Octa-core (4 x 1.6 GHz Cortex-A55 + 4 x 1.2 GHz Cortex-A55)  
GPU IMG8322  
Sensors Accelerometer, Fingerprint (rear mounted), Proximity  
Browser HTML HTML5  
Radio Stereo FM radio with RDS
Sound 3.5mm Audio Jack, MP4/H.264 player, MP3/WAV/eAAC+/WMA player, Speaker Phone  
Colors Black Dark Blue, Warm Gray  
Battery Standard battery, Li-Ion 1200 mAh (Li-ion Removable), 3000 mAh  
StandBy Time Up to 520 h (2G) / Up to 370 h (3G)
Misc SMS(threaded view), MMS, Email, Push Mail, IM   Document viewer/editor, Photo/video editor