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| Phone | AT&T Maestro 3 | Samsung SGH-X640 | Motorola E398 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size |
6.5" diag. 20 : 9 |
? | ? |
| Display Resolution & Type |
720 x 1600 pixels (~270 ppi) LCD (TFT/TFD) |
128 x 160 pixels LCD (TFT/TFD) |
176 x 220 pixels LCD (TFT/TFD) |
| Display Refresh | 60 Hz | ? | ? |
| Battery | 3,900 mAh | 800 mAh | ? |
| Processor | 2 GHz MediaTek Helio A22 (MT6761) | ? | ? |
| RAM | 3 GB | ? | ? |
| Storage | 32 GB | ? raw hardware | ? raw hardware |
| Main Camera | 13 megapixel | Yes | Yes |
| Wide Camera | 5 megapixel | - | - |
| Tele Camera | - | - | - |
| Video Capture | 1080p HD | - | - |
| Front Camera | 5 megapixel | - | - |
| Weight |
6.24 oz (177g) |
3 oz (85g) |
3.88 oz (110g) |
| Dimensions |
6.58" x 3.03" x 0.33" (167 x 77 x 8.4 mm) |
3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm) |
4.25" x 1.81" x 0.81" (108 x 46 x 20.6 mm) |
| Form Factor | Slab | Clamshell | Slab |
| Platform / OS | Android | (proprietary) | (proprietary) |
| Network Bands |
4G LTE: 2, 4, 5, 12, 14, 30 |
GSM: 900, 1800, 1900 |
GSM: 900, 1800, 1900 |
| Data Technology | LTE (Cat 4) | GPRS | GPRS |
| Features | |||
| Barometer | Yes | - | - |
| Fingerprint Reader |
Yes stand-alone |
- | - |
| Flashlight | Yes | - | - |
| Accessibility | |||
| Hearing Aid Compatible |
Yes M4, T4 (very tele-coil compatible) |
- | - |
| Multiple Languages | n/a | Yes | Yes |
| TTY/TDD (Digital) | - | - | Yes |
| Alerts | |||
| Ringer Profiles | - | - | Yes |
| Connectivity | |||
| Bluetooth | Yes | - | Yes |
| USB |
Yes USB Type C |
- | Yes |
| Wi-Fi |
Yes 5 (802.11 a,ac,b,g,n) |
- | - |
| Contacts | |||
| Picture ID | n/a | Yes | Yes |
| Ringer ID | n/a | Yes | Yes |
| Voice Dialing | n/a | - | Yes |
| Customization | |||
| Custom Graphics | n/a | Yes | Yes |
| Custom Ringtones | n/a | Yes | Yes |
| Real-Music Ringers | n/a | - | Yes |
| Data & Network | |||
| Data Tethering | n/a | - | Yes |
| WAP / Web Browser | n/a | Yes | Yes |
| Input | |||
| Predictive Text Entry | n/a | Yes | Yes |
| Side Keys | Yes | Yes | Yes |
| Touch Screen |
Yes Capacitive |
- | - |
| Memory | |||
| Memory Card Slot | Yes | - | Yes |
| Messaging | |||
| Email Client | n/a | - | Yes |
| EMS / Picture Messaging | n/a | Yes | Yes |
| Instant Messaging | n/a | - | Yes |
| MMS | n/a | Yes | Yes |
| Text Messaging Templates | n/a | Yes | - |
| Music | |||
| Headphone Jack (3.5mm) | Yes | - | - |
| Music Player | n/a | - | Yes |
| Stereo Speakers | - | - | Yes |
| Productivity | |||
| Alarm | n/a | Yes | Yes |
| Calculator | n/a | Yes | Yes |
| Calendar | n/a | Yes | Yes |
| To-Do List | n/a | Yes | - |
| Voice Memo | n/a | Yes | Yes |
| Software | |||
| Games | n/a | Yes | Yes * |
| Java (J2ME) | n/a | Yes | Yes |
| Voice | |||
| HD Voice | Yes | - | - |
| Headset Jack (2.5 mm) | n/a | Yes | Yes |
| Speaker Phone | Yes | Yes | Yes |
| * Some versions only | |||
| AT&T Maestro 3 | Samsung SGH-X640 | Motorola E398 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | AT&T Maestro 3 | Samsung SGH-X640 | Motorola E398 |
