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| Phone | Samsung SGH-X640 | Sony Ericsson T68i | Samsung SGH-T809 / SGH-D820 | AT&T Maestro 3 |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? | ? | ? |
6.5" diag. 20 : 9 |
| Display Resolution & Type |
128 x 160 pixels LCD (TFT/TFD) |
101 x 80 pixels LCD (STN) |
240 x 320 pixels LCD (TFT/TFD) |
720 x 1600 pixels (~270 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | ? | 60 Hz |
| Battery | 800 mAh | 700 mAh | ? | 3,900 mAh |
| Processor | ? | ? | ? | 2 GHz MediaTek Helio A22 (MT6761) |
| RAM | ? | ? | ? | 3 GB |
| Storage | ? raw hardware | ? raw hardware | ? raw hardware | 32 GB |
| Main Camera | Yes | - | 1 megapixel | 13 megapixel |
| Wide Camera | - | - | - | 5 megapixel |
| Tele Camera | - | - | - | - |
| Video Capture | - | - | CIF (352 x 288) | 1080p HD |
| Front Camera | - | - | - | 5 megapixel |
| Weight |
3 oz (85g) |
2.96 oz (84g) |
3.35 oz (95g) |
6.24 oz (177g) |
| Dimensions |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
3.94" x 1.89" x 0.79" (100 x 48 x 20.1 mm) |
3.9" x 2" x 0.58" (99 x 51 x 14.7 mm) |
6.58" x 3.03" x 0.33" (167 x 77 x 8.4 mm) |
| Form Factor | Clamshell | Slab | Slide | Slab |
| Platform / OS | (proprietary) | (proprietary) | (proprietary) | Android |
| Network Bands |
GSM: 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
GSM: 850, 900, 1800, 1900 |
4G LTE: 2, 4, 5, 12, 14, 30 |
| Data Technology | GPRS | GPRS | EDGE | LTE (Cat 4) |
| Features | ||||
| Barometer | - | - | - | Yes |
| Fingerprint Reader | - | - | - |
Yes stand-alone |
| Flashlight | - | - | - | Yes |
| Accessibility | ||||
| Hearing Aid Compatible | - | - |
Yes M3 (mostly compatible) |
Yes M4, T4 (very tele-coil compatible) |
| Multiple Languages | Yes | Yes | Yes | n/a |
| TTY/TDD (Digital) | - | - | Yes | - |
| Alerts | ||||
| Ringer Profiles | - | Yes | - | - |
| Connectivity | ||||
| Bluetooth | - | Yes | Yes | Yes |
| Infrared (IR) | - | Yes | - | - |
| USB | - | - | Yes |
Yes USB Type C |
| Wi-Fi | - | - | - |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | ||||
| Picture ID | Yes | Yes | Yes | n/a |
| Ringer ID | Yes | Yes | Yes | n/a |
| Voice Dialing | - | Yes | - | n/a |
| Customization | ||||
| Custom Graphics | Yes | Yes | Yes | n/a |
| Custom Ringtones | Yes | Yes | Yes | n/a |
| Real-Music Ringers | - | - | Yes | n/a |
| Data & Network | ||||
| Data Tethering | - | Yes | Yes | n/a |
| WAP / Web Browser | Yes | Yes | Yes | n/a |
| Input | ||||
| Predictive Text Entry | Yes | Yes | Yes | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen | - | - | - |
Yes Capacitive |
| Memory | ||||
| Memory Card Slot | - | - | Yes | Yes |
| Messaging | ||||
| Email Client | - | Yes | - | n/a |
| EMS / Picture Messaging | Yes | Yes | Yes | n/a |
| Instant Messaging | - | - | Yes | n/a |
| MMS | Yes | Yes | Yes | n/a |
| Text Messaging Templates | Yes | Yes | Yes | n/a |
| Music | ||||
| Headphone Jack (3.5mm) | - | - | - | Yes |
| Music Player | - | - | Yes | n/a |
| Stereo Speakers | - | - | Yes | - |
| Productivity | ||||
| Alarm | Yes | Yes | Yes | n/a |
| Calculator | Yes | Yes | Yes | n/a |
| Calendar | Yes | Yes | Yes | n/a |
| To-Do List | Yes | Yes | Yes | n/a |
| Voice Memo | Yes | Yes | Yes | n/a |
| Software | ||||
| Games | Yes | Yes | Yes | n/a |
| Java (J2ME) | Yes | - | Yes | n/a |
| Voice | ||||
| HD Voice | - | - | - | Yes |
| Headset Jack (2.5 mm) | Yes | - | - | n/a |
| Speaker Phone | Yes | - | Yes | Yes |
| Samsung SGH-X640 | Sony Ericsson T68i | Samsung SGH-T809 / SGH-D820 | AT&T Maestro 3 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-X640 | Sony Ericsson T68i | Samsung SGH-T809 / SGH-D820 | AT&T Maestro 3 |
