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Phone HP Elite x3 Nokia 3555 HTC One M9 (GSM) ZTE Z221
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 6" diag.
16 : 9
1.8" diag.
4 : 3
5" diag.
16 : 9
2" diag.
4 : 3
Display Resolution & Type 1440 x 2560 pixels
(~493 ppi)
AMOLED
128 x 160 pixels
(~114 ppi)
LCD (TFT/TFD)
1080 x 1920 pixels
(~441 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~200 ppi)
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz ?
Battery 4,150 mAh ? 2,840 mAh 900 mAh
Processor 2.2 GHz Qualcomm Snapdragon 820 (MSM8996) ? 2 GHz Qualcomm Snapdragon 810 (MSM8994) ?
RAM 4 GB ? 3 GB ?
Storage 64 GB ? raw hardware 32 GB 142 MB
Main Camera 16 megapixel Yes 20 megapixel Yes
Wide Camera - - - -
Tele Camera - - - -
Video Capture 4K UHD QCIF (176 x 144) 4K UHD QCIF (176 x 144)
Front Camera 8 megapixel - 4 megapixel -
Weight 6.84 oz
(194g)
3.32 oz
(94g)
5.54 oz
(157g)
3.24 oz
(92g)
Dimensions 6.36" x 3.29" x 0.31"
(162 x 84 x 7.9 mm)
3.94" x 1.75" x 0.83"
(100 x 44 x 21 mm)
5.69" x 2.74" x 0.38"
(145 x 70 x 9.6 mm)
3.76" x 1.92" x 0.73"
(96 x 49 x 18.5 mm)
Form Factor Slab Clamshell Slab Clamshell
Platform / OS Windows (proprietary) Android (proprietary)
Network Bands

4G LTE: 1, 2, 3, 4, 5, 7, 12, 17, 20, 29, 30

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

WCDMA: 4

GSM: 850, 900, 1800, 1900

*

4G LTE: 2, 3, 4, 5, 7, 12, 13, 17, 29, 30

WCDMA: 1, 2, 4, 5

GSM: 850, 900, 1800, 1900

*

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

Data Technology LTE (Cat 6) WCDMA (UMTS) LTE (Cat 9) HSDPA 3.6
Features 
Barometer Yes - - -
Fingerprint Reader Yes - - -
Flashlight Yes - Yes -
GPS / Location n/a - n/a Yes
Water-Resistant Yes
IPX7 (snorkeling)
- Yes
IPX3 (falling spray)
-
Accessibility
Adjustable Text Size n/a - n/a -
Hearing Aid Compatible Yes Yes * Yes Yes
Multiple Languages n/a Yes n/a Yes
TTY/TDD (Digital) Yes - Yes Yes
Alerts
Extra Display - Yes - Yes
Ringer Profiles - Yes - Yes
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Mobile Hotspot n/a - n/a -
NFC Yes - Yes -
USB Yes
USB Type C
Yes Yes
Micro-USB
Yes
Wi-Fi Yes
5 (802.11 a,ac,b,g,n)
- Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID n/a Yes n/a -
Ringer ID n/a Yes n/a -
Voice Dialing n/a Yes n/a -
Customization
Custom Graphics n/a Yes n/a Yes
Custom Ringtones n/a Yes n/a Yes
Real-Music Ringers n/a Yes n/a Yes
Data & Network
Data Tethering n/a - n/a -
Dual-SIM Yes * - - -
WAP / Web Browser n/a Yes n/a Yes
Input
Predictive Text Entry n/a Yes n/a Yes
Side Keys Yes Yes Yes Yes
Touch Screen Yes - Yes -
Memory
Memory Card Slot Yes Yes Yes -
Messaging
Email Client n/a - n/a Yes
Instant Messaging n/a Yes * n/a Yes
MMS n/a Yes n/a Yes
Text Messaging Templates n/a Yes n/a Yes
Music
FM Radio - - Yes -
Headphone Jack (3.5mm) Yes - Yes -
Music Player n/a Yes n/a -
Stereo Speakers Yes - Yes -
Photo & Video
DLNA - - Yes -
Miracast Yes - Yes -
TV Output Yes - Yes -
Power
Fast Charging - - Yes -
Wireless Charging Yes - - -
Productivity
Alarm n/a Yes n/a Yes
Calculator n/a Yes n/a Yes
Calendar n/a Yes n/a Yes
To-Do List n/a Yes n/a -
Voice Memo n/a Yes n/a Yes
Software
Games n/a Yes n/a Yes
Java (J2ME) n/a Yes n/a Yes
Voice
HD Voice - - Yes -
Headset Jack (2.5 mm) n/a Yes n/a -
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  HP Elite x3 Nokia 3555 HTC One M9 (GSM) ZTE Z221
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone HP Elite x3 Nokia 3555 HTC One M9 (GSM) ZTE Z221

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