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Samsung Galaxy Ace 2 vs Samsung Galaxy 551

General Info

Manufacturer
Samsung Samsung
Announced
February 2012 October 2010
Status
Available - May 2012 Available - Q4 2010
Colors
Black Black
Form Factor
Candybar Candybar
Dimension
118.3 x 62.2 x 10.5 mm
(4.66 x 2.45 x 0.41 in)
111 x 55 x 15.2 mm
(4.37 x 2.17 x 0.6 in)
Weight
122 g (4.3 oz) 117 g (4.13 oz)
2G Network
GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G Network
HSDPA 900 / 2100 HSDPA 900 / 2100
HSDPA 850 / 2100
Messaging
SMS, MMS, EMail, IM SMS, MMS, EMail, IM

Display

Type
PLS TFT capacitive touchscreen TFT capacitive touchscreen
Colors
16M colors 16M colors
Size
3.8 inches [Similar] 3.2 inches [Similar]
Resolution
480 x 800 pixels (246 ppi) [Similar] 240 x 400 pixels (146 ppi)
Screen-to-Body Ratio
55.64% 47.59%
Multi-Touch

Hardware and OS

OS
Android OS, v2.3 Android OS, v2.2 (Froyo), upgradable to v2.3.6 (Gingerbread)
Processor
Dual-core 800 MHz, NovaThor U8500 [Similar] 600 MHz, Qualcomm MSM7227 [Similar]
GPU
Mali-400MP [Similar] Adreno 200 [Similar]
RAM
768 MB [Browse Similar] N/A
Internal Memory
4 GB storage 160 MB
External Memory
microSD, up to 32GB microSD, up to 32 GB, 1 GB included

Camera

Rear Camera
5 MP, 2592x1944 pixels [Similar] 3.15 MP, 2048x1536 pixels [Similar]
Flash
LED flash No
Features
Auto focus, Geo-tagging, Face And Smile Detection Auto focus,
Video
Yes, 720p@30fps Yes, QVGA@15fps
Front Camera
Yes, VGA [Similar] No [Similar]

Multimedia

3.5mm Jack
Radio
Stereo FM radio with RDS Stereo FM radio with RDS
Games
Yes Yes + Downloadable
Loud Speaker

Connectivity and Data Rate

GPRS
Yes Class 10 (4+1/3+2 slots), 32 - 48 kbps
Edge
Yes Class 12
3G
HSDPA, 14.4 Mbps HSDPA, 7.2 Mbps; HSUPA
Bluetooth
Yes, v3.0 with A2DP Yes, v2.1 with A2DP
Wi-Fi
Wi-Fi 802.11 b/g/n, DLNA, Wi-Fi Direct, Wi-Fi hotspot Wi-Fi 802.11 b/g/n, DLNA, Wi-Fi hotspot
USB
Yes, v2.0 microUSB Yes, microUSB v2.0
GPS
Yes, with A-GPS support and GLONASS Yes, with A-GPS support
Browser
HTML HTML

User Memory

Internal
4 GB storage, 768 MB RAM 160 MB
Expandable Storage
microSD, up to 32GB microSD, up to 32 GB, 1 GB included

Sensors

Fingerprint
Proximity Sensor
Accelerometer Sensor
NFC

Battery

Type
Standard battery, Li-Ion Li-Ion Battery
Capacity
1500 mAh 1200 mAh
Stand by
Up to 670 h (2G)
Up to 640 h (3G)
Up to 520 h (2G)
Up to 370 h (3G)
Talk Time
Up to 16 h 20 min (2G)
Up to 7 h 30 min (3G)
Up to 9 h (2G)
Up to 5 h (3G)
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