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Phone ZTE Aspect Samsung SCH-A990 Kyocera Hydro Wave / Hydro Air Nokia Lumia 521 / 520
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 2.4" diag.
4 : 3
? 5" diag.
16 : 9
4" diag.
5 : 3
Display Resolution & Type 320 x 240 pixels
(~167 ppi)
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
540 x 960 pixels
(~220 ppi)
LCD (TFT/TFD)
480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz ?
Battery 1,000 mAh 1,000 mAh 2,300 mAh 1,430 mAh
Processor 230 MHz Qualcomm QSC6270 ? 1.2 GHz Qualcomm Snapdragon 410 (MSM8916) 1 GHz Qualcomm Snapdragon S4 MSM8270
RAM 128 MB ? 1 GB 512 MB
Storage 256 MB ? raw hardware 8 GB 8 GB
Main Camera 2 megapixel 3 megapixel 5 megapixel 5 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture QVGA (320 x 240) ? 1080p HD 720p HD
Front Camera - - 2 megapixel -
Weight 3.7 oz
(105g)
4.4 oz
(125g)
5.11 oz
(145g)
4.39 oz
(124g)
Dimensions 4.55" x 2.4" x 0.45"
(116 x 61 x 11.4 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
5.66" x 2.85" x 0.42"
(144 x 72 x 10.7 mm)
4.72" x 2.52" x 0.39"
(120 x 64 x 9.9 mm)
Form Factor Slab Clamshell Slab Slab
Platform / OS (proprietary) (proprietary) Android Windows
Network Bands

WCDMA: 2, 4

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

4G LTE: 2, 4, 12

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

*

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

*

Data Technology WCDMA (UMTS) EVDO r0 LTE (Cat 4) HSPA+ 21
Features 
Flashlight - Yes Yes -
GPS / Location Yes Yes n/a n/a
Ruggedized - - Yes -
Water-Resistant - - Yes
IPX7 (snorkeling)
-
Accessibility
Adjustable Text Size - - n/a n/a
Hearing Aid Compatible Yes Yes Yes Yes
Multiple Languages Yes Yes n/a n/a
TTY/TDD (Digital) Yes Yes Yes Yes
Alerts
Extra Display - Yes - -
Ringer Profiles Yes - - -
Connectivity
Bluetooth Yes Yes Yes Yes
Mobile Hotspot - - n/a n/a
USB Yes
Micro-USB
Yes Yes
Micro-USB
Yes
Wi-Fi - - Yes
4 (802.11 b,g,n)
Yes
Contacts
Picture ID Yes Yes n/a n/a
Ringer ID Yes Yes n/a n/a
Voice Dialing - Yes n/a n/a
Customization
Custom Graphics Yes Yes n/a n/a
Custom Ringtones Yes Yes n/a n/a
Real-Music Ringers Yes Yes n/a n/a
Data & Network
Data Tethering - Yes n/a n/a
WAP / Web Browser Yes Yes n/a n/a
Input
Predictive Text Entry Yes Yes n/a n/a
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware Yes - - -
Touch Screen - - Yes Yes
Memory
Memory Card Slot Yes Yes Yes Yes
Messaging
Email Client Yes - n/a n/a
EMS / Picture Messaging - Yes n/a n/a
Instant Messaging - - n/a n/a
MMS Yes Yes n/a n/a
Text Messaging Templates Yes Yes n/a n/a
Music
Headphone Jack (3.5mm) Yes - Yes Yes
Music Player Yes Yes n/a n/a
Stereo Speakers - Yes - -
Photo & Video
TV Output - Yes - -
Power
Fast Charging - - Yes * -
Productivity
Alarm Yes Yes n/a n/a
Calculator Yes Yes n/a n/a
Calendar Yes Yes n/a n/a
To-Do List - - n/a n/a
Voice Memo Yes Yes n/a n/a
Software
BREW - Yes n/a n/a
Games Yes Yes n/a n/a
Java (J2ME) Yes - n/a n/a
Voice
HD Voice - - Yes * -
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  ZTE Aspect Samsung SCH-A990 Kyocera Hydro Wave / Hydro Air Nokia Lumia 521 / 520
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Phone ZTE Aspect Samsung SCH-A990 Kyocera Hydro Wave / Hydro Air Nokia Lumia 521 / 520

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