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Phone Ericsson T66 Palm Treo 650 (GSM) LG Velvet Sony Xperia XZ1 Ericsson T39
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? ? 6.8" diag.
20.5 : 9
5.2" diag.
16 : 9
?
Display Resolution & Type ? 320 x 320 pixels
LCD (TFT/TFD)
1080 x 2460 pixels
(~395 ppi)
AMOLED
1080 x 1920 pixels
(~424 ppi)
LCD (TFT/TFD)
?
LCD (Grayscale)
Display Refresh ? ? 60 Hz 60 Hz ?
Battery ? ? 4,300 mAh 2,700 mAh ?
Processor ? 312 MHz Intel XScale PXA270 Qualcomm Snapdragon 765G 2.5 GHz Qualcomm Snapdragon 835 (MSM8998) ?
RAM ? ? 6 GB 4 GB ?
Storage ? raw hardware ? raw hardware 128 GB 64 GB ? raw hardware
Main Camera - Yes 48 megapixel 19 megapixel -
Wide Camera - - 8 megapixel - -
Tele Camera - - - - -
Video Capture - CIF (352 x 288) 4K UHD 4K UHD -
Front Camera - - 16 megapixel 13 megapixel -
Weight 2.08 oz
(59g)
6.3 oz
(179g)
6.35 oz
(180g)
5.5 oz
(156g)
3.03 oz
(86g)
Dimensions 3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
4.4" x 2.3" x 0.9"
(112 x 58 x 22.9 mm)
6.58" x 2.92" x 0.31"
(167 x 74 x 7.9 mm)
5.82" x 2.89" x 0.29"
(148 x 73 x 7.4 mm)
3.78" x 1.97" x 0.71"
(96 x 50 x 18 mm)
Form Factor Slab Slab Slab Slab Flip
Platform / OS (proprietary) Palm OS Android Android (proprietary)
Network Bands

GSM: 900, 1800, 1900

GSM: 850, 900, 1800, 1900

5G: 2, 5, 25, 41, 66, 71, 260, 261

4G LTE: 1, 2, 3, 4, 5, 7, 12, 13, 14, 20, 25, 29, 30, 38, 39, 40, 41, 46, 66, 71

WCDMA: 1, 2, 4, 5

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

*

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 29, 40, 41, 66

WCDMA: 1, 2, 4, 5, 8

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

Data Technology - EDGE NR (5G) LTE (Cat 16) GPRS
Features 
Barometer - - Yes Yes -
Fingerprint Reader - - Yes
in-display (optical)
Yes *
stand-alone
-
Flashlight - - Yes Yes -
Water-Resistant - - Yes
IPX8 (SCUBA)
Yes
IPX8 (SCUBA)
-
Accessibility
Hearing Aid Compatible - - Yes Yes -
Multiple Languages Yes n/a n/a n/a Yes
TTY/TDD (Digital) - - Yes Yes -
Alerts
Ringer Profiles Yes - - - Yes
Connectivity
Bluetooth - Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Yes
HSP, DUN, OPP, Sync
Infrared (IR) - Yes - - Yes
NFC - - Yes Yes -
USB - Yes Yes
USB Type C
Yes
USB Type C
-
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 n/a n/a -
Ringer ID - n/a n/a n/a -
Voice Dialing - n/a n/a n/a Yes
Customization
Custom Graphics Yes n/a n/a n/a Yes
Custom Ringtones Yes n/a n/a n/a Yes
Data & Network
Data Tethering - n/a n/a n/a Yes
Dual-SIM - - - Yes * -
WAP / Web Browser Yes n/a n/a n/a Yes
Input
Predictive Text Entry Yes n/a n/a n/a Yes
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - Yes - - -
Touch Screen - Yes Yes Yes -
Memory
Memory Card Slot - Yes Yes Yes -
Messaging
Email Client - n/a n/a n/a -
EMS / Picture Messaging Yes n/a n/a n/a -
MMS - n/a n/a n/a -
Text Messaging Templates Yes n/a n/a n/a Yes
Music
FM Radio - - Yes - -
Headphone Jack (3.5mm) - - Yes Yes -
Music Player - n/a n/a n/a -
Stereo Speakers - - Yes Yes -
Photo & Video
DLNA - - Yes Yes -
Miracast - - Yes Yes -
TV Output - - Yes - -
Power
Fast Charging - - Yes Yes -
Wireless Charging - - Yes - -
Productivity
Alarm Yes n/a n/a n/a Yes
Calculator Yes n/a n/a n/a Yes
Calendar Yes n/a n/a n/a Yes
To-Do List Yes n/a n/a n/a -
Voice Memo - n/a n/a n/a Yes
Software
Games Yes n/a n/a n/a Yes
Voice
HD Voice - - Yes Yes -
Headset Jack (2.5 mm) - n/a n/a n/a -
Speaker Phone - Yes Yes Yes -
  * Some versions only
  Ericsson T66 Palm Treo 650 (GSM) LG Velvet Sony Xperia XZ1 Ericsson T39
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Ericsson T66 Palm Treo 650 (GSM) LG Velvet Sony Xperia XZ1 Ericsson T39

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