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ZTE Open vs ZTE E821

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ZTE Open Remove phone

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Posted: 24 Feb 2013
Market Status: Not yet released

ZTE E821 Remove phone

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User Rating - 10

Posted: 02 Nov 2011
Market Status: Released

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Design
Device typeSmart phoneFeature phone 
OSFirefox  
Form factorCandybarCandybar 
Dimensions4.49 x 2.44 x 0.49 inches (114 x 62 x 12.5 mm)4.33 x 2.40 x 0.49 inches (110 x 61 x 12.4 mm) 
Design features Full keyboard, Soft keys (2), D-Pad 
Display
Physical size3.5 inches2.4 inches 
Resolution320 x 480 pixels320 x 240 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.

165 ppi167 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.

TFTTFT 
Colors 262 144 
TouchscreenCapacitive, Multi-touch  
FeaturesLight sensor  
Battery
Capacity1200 mAh900 mAh 
Type Li - Ion 
Hardware
System chip

System chip - Most modern handsets use an advanced chip that includes many of the device’s hardware modules like the processor, Wi-Fi, Bluetooth and sometimes even the wireless radio. This field shows what particular system chip (or System-on-a-Chip) is used in the phone.

Qualcomm Snapdragon S1 MSM7225A  
Processor

Processor - The processor is the main computing component of a phone and is a major factor when it comes to the overall speed of the device. Some more powerful smartphones use dual-core and quad-core processors designed to deliver greater performance.

Single core, ARM Cortex-A5  
Graphics processorAdreno 200 (enhanced)  
System memory

System memory - System memory, or RAM memory is the type of memory that the device uses to temporarily store data from the OS or currently-running apps. The more RAM available to the device, the better the performance will be when multiple or heavier programs are running.

256 MB RAM  
Built-in storage0.512 GB  
Storage expansion microSD, microSDHC up to 8 GB 
Camera
Camera3.2 megapixels2 megapixels 
CamcorderYesYes 
Front-facing camera 0.3 megapixels VGA 
specifications continue after the ad
Multimedia
Music player   
Supported formatsMP3MP3 
Video playback   
Supported formatsMPEG4MPEG4 
RadioFMFM 
SpeakersEarpiece, LoudspeakerEarpiece, Loudspeaker 
StreamingAudio, Video  
Internet browsing
BrowserYessupports: supports: XHTML 
Built-in online services support Facebook, Twitter 
Technology
GSM850, 900, 1800, 1900 MHz850, 900, 1800, 1900 MHz 
UMTS850, 1900 MHz850, 1900, 2100 MHz 
Data HSPA (unspecified), UMTS, EDGE, GPRS 
Global RoamingYesYes 
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  
Phone features
OrganizerCalendar, Alarm, Calculator  
MessagingSMS, MMS, Predictive text inputSMS, MMS 
E-mailYes  
Instant MessagingYes  
JAVA

JAVA - J2ME (Java 2 Platform, Micro Edition) is a technology that allows programmers to use the Java programming language and related tools to develop programs for mobile wireless information devices such as cellular phones and personal digital assistants (PDAs). J2ME consists of programming specifications and a special virtual machine, the K Virtual Machine, that allows a J2ME-encoded program to run in the mobile device.

 Yes 
Connectivity
Bluetooth2.1, EDR2.0 
Profiles Advanced Audio Distribution (A2DP) 
Wi-Fi802.11 b, g, n  
USBYesUSB 2.0 
ConnectormicroUSB  
FeaturesUSB charging  
Headphones connector 3.5mm 
Charging connectormicroUSB  
Other features
NotificationsMusic ringtones (MP3), Polyphonic ringtones, Vibration, Flight mode, Silent mode, SpeakerphoneMusic ringtones, Polyphonic ringtones (72 voices), Vibration, Silent mode 
SensorsAccelerometer  

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