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AT&T Z331 vs Sonim XP3340 Sentinel

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AT&T Z331 Remove phone

Posted: 14 Oct 2011
Market Status: Released
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Sonim XP3340 Sentinel Remove phone

Posted: 12 Aug 2011
Market Status: Released

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Design
Device typeFeature phoneFeature phone 
Dimensions3.86 x 2.03 x 0.67 inches (98 x 52 x 17 mm)4.96 x 2.36 x 0.98 inches (126 x 60 x 25 mm) 
Weight3.17 oz (90 g)
the average is 4.8 oz (138 g)
6.53 oz (185 g)
the average is 4.8 oz (138 g)
 
Rugged Water, Dust, Shock, Vibration, Temperature resistant 
IP certified IP 68 
MIL-STD-810 certified Yes 
Display
Physical size2.4 inches2.0 inches 
Resolution240 x 320 pixels240 x 320 pixels 
Pixel density

Pixel density - The pixel density of a display represents the number of pixels over an area of one inch. It’s measured in “pixels per inch”, or ppi. The higher the number, the more detailed and good-looking the display is.

167 ppi200 ppi 
Technology

Technology - There are two main screen technologies currently used in phones and tablets: LCD and AMOLED. The former usually features a light source and liquid crystals, while the latter is based on organic light-emitting diodes. Newer LCD variations like IPS-LCD and Super-LCD allow for very accurate color reproduction and very wide viewing angles, where no significant image quality loss is observed. Current AMOLED screens differ in such a way that they can exhibit much more saturated colors (sometimes too much) and incredibly high contrast levels, which is due to black color being completely black in AMOLED displays.

TFT  
Colors262 144  
Features Scratch-resistant glass (Corning Gorilla Glass) 
Additional display

Additional display - Shows specs of the phone's additional display

OLED  
Resolution

Resolution - Refers to the width and the length od the additional display

128 x 128 pixels  
Physical Size1.46 inches  
Camera
Camera3 megapixels2 megapixels 
Flash LED 
CamcorderResolution, 176 x 144 pixels  
Hardware
Built-in storage0.14 GB  
Storage expansionmicroSD, microSDHC up to 8 GBmicroSD, microSDHC 
Battery
Talk time3.00 hours
the average is 12 h (690 min)
24.00 hours
the average is 12 h (690 min)
 
Stand-by time8.3 days (200 hours)
the average is 20 days (488 h)
33.3 days (800 hours)
the average is 20 days (488 h)
 
Capacity950 mAh1750 mAh 
specifications continue after the ad
Multimedia
RadioFM  
Speakers Earpiece, Loudspeaker 
Internet browsing
BrowserOpera Mini  
Technology
GSM850, 900, 1800, 1900 MHz850, 900, 1800, 1900 MHz 
UMTS850, 1900, 2100 MHz  
DataEDGE, UMTS, HSDPA 3.6 Mbit/sEDGE 
Positioning

Positioning - This field shows the positioning systems supported by the device. There are three main types: GPS, A-GPS and GLONASS. GPS - This is one of the most widespread global positioning technologies, developed and maintained by the U.S. government. It uses satellites in order to detect your location. Works best in clear weather. A-GPS - A-GPS stands for Assisted GPS and is the industry standard for positioning and navigation. “Assisted” means that it can use local wireless networks, in addition to satellites, for quicker and more precise localization. GLONASS - GLONASS is a global positioning system, developed by the Russian Federation. It’s very similar to GPS, but isn’t so popular in cell phones.

 GPS, A-GPS 
Connectivity
Bluetooth2.02.1, EDR 
USBUSB 1.1Yes 
Connector Proprietary 
Other Computer sync 
Other features
NotificationsVibration, Silent mode, SpeakerphoneMusic ringtones (MP3, MIDI), Polyphonic ringtones 
Sensors Accelerometer 
Hearing aid compatibilityM3, T4  
OtherTTY/TDD  
Shopping information
Accessories Electrical wall charger, Belt clip, Screwdriver, Stereo wired headset, USB cable, 3.5 mm USB adaptor 

To see the full specifications with in-depth details click here.

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