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Phone Motorola E398 Sharp Sidekick LX 2007 T-Mobile REVVL 4 Ericsson T66
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? 3" diag.
5 : 3
6.2" diag.
19 : 9
?
Display Resolution & Type 176 x 220 pixels
LCD (TFT/TFD)
400 x 240 pixels
(~155 ppi)
LCD (TFT/TFD)
720 x 1520 pixels
(~270 ppi)
LCD (TFT/TFD)
?
Display Refresh ? ? 60 Hz ?
Battery ? 1,540 mAh 3,500 mAh ?
Processor ? 200 MHz OMAP 331 2 GHz MediaTek Helio A22 (MT6761) ?
RAM ? ? 2 GB ?
Storage ? raw hardware ? raw hardware 32 GB ? raw hardware
Main Camera Yes 1 megapixel 13 megapixel -
Wide Camera - - - -
Tele Camera - - - -
Video Capture - ? 1080p HD -
Front Camera - - 5 megapixel -
Weight 3.88 oz
(110g)
5.7 oz
(162g)
5.59 oz
(158g)
2.08 oz
(59g)
Dimensions 4.25" x 1.81" x 0.81"
(108 x 46 x 20.6 mm)
5.12" x 2.36" x 0.7"
(130 x 60 x 17.9 mm)
6.26" x 2.99" x 0.32"
(159 x 76 x 8.1 mm)
3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
Form Factor Slab Swivel Slab Slab
Platform / OS (proprietary) (proprietary) Android (proprietary)
Network Bands

GSM: 900, 1800, 1900

*

GSM: 850, 900, 1800, 1900

4G LTE: 2, 4, 5, 7, 12, 25, 26, 41, 66, 71

WCDMA: 2, 4, 5

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

Data Technology GPRS EDGE LTE (Cat 6) -
Features 
Fingerprint Reader - - Yes
stand-alone
-
Flashlight - Yes Yes -
Accessibility
Adjustable Text Size - Yes n/a -
Hearing Aid Compatible - Yes Yes -
Multiple Languages Yes - n/a Yes
TTY/TDD (Digital) Yes - Yes -
Alerts
Ringer Profiles Yes Yes - Yes
Connectivity
Bluetooth Yes Yes Yes -
USB Yes Yes Yes
USB Type C
-
Wi-Fi - - Yes
5 (802.11 a,ac,b,g,n)
-
Contacts
Picture ID Yes Yes n/a -
Ringer ID Yes Yes n/a -
Voice Dialing Yes - n/a -
Customization
Custom Graphics Yes Yes n/a Yes
Custom Ringtones Yes Yes n/a Yes
Real-Music Ringers Yes Yes n/a -
Data & Network
Data Tethering Yes - n/a -
WAP / Web Browser Yes Yes n/a Yes
Input
Predictive Text Entry Yes - n/a Yes
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - Yes - -
Touch Screen - - Yes -
Memory
Memory Card Slot Yes Yes Yes -
Messaging
Email Client Yes Yes n/a -
EMS / Picture Messaging Yes - n/a Yes
Instant Messaging Yes Yes n/a -
MMS Yes Yes n/a -
Text Messaging Templates - Yes n/a Yes
Music
FM Radio - - Yes -
Headphone Jack (3.5mm) - Yes Yes -
Music Player Yes Yes n/a -
Stereo Speakers Yes - - -
Productivity
Alarm Yes Yes * n/a Yes
Calculator Yes - n/a Yes
Calendar Yes Yes n/a Yes
To-Do List - Yes n/a Yes
Voice Memo Yes - n/a -
Software
Games Yes * Yes n/a Yes
Java (J2ME) Yes Yes n/a -
Voice
HD Voice - - Yes -
Headset Jack (2.5 mm) Yes - n/a -
Speaker Phone Yes Yes Yes -
  * Some versions only
  Motorola E398 Sharp Sidekick LX 2007 T-Mobile REVVL 4 Ericsson T66
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Phone Motorola E398 Sharp Sidekick LX 2007 T-Mobile REVVL 4 Ericsson T66

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