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| Phone | Samsung SGH-E640 | Samsung Galaxy S II, Epic 4G Touch | T-Mobile REVVL 7 5G | Motorola Moto z4 |
| Current U.S. Carriers | (none) | (none) |
Metro T-Mobile |
(none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
4.5" diag. 5 : 3 |
6.6" diag. 20 : 9 |
6.4" diag. 19.5 : 9 |
| Display Resolution & Type |
176 x 220 pixels LCD (TFT/TFD) |
480 x 800 pixels (~206 ppi) AMOLED |
1080 x 2408 pixels (~401 ppi) LCD (TFT/TFD) |
1080 x 2340 pixels (~403 ppi) AMOLED |
| Display Refresh | ? | 60 Hz | 120 Hz | 60 Hz |
| Battery | 800 mAh | 1,800 mAh | 5,000 mAh | 3,600 mAh |
| Processor | ? | 1.2 GHz Samsung Exynos C210 dual-core | 2.2 GHz Snapdragon 6 Gen 1 | 2 GHz Qualcomm Snapdragon 675 |
| RAM | ? | ? | 6 GB | 4 GB |
| Storage | ? raw hardware | 16 GB | 128 GB | 128 GB |
| Main Camera | 1 megapixel | 8 megapixel | 50 megapixel | 48 megapixel |
| Wide Camera | - | - | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | QCIF (176 x 144) | 1080p HD | 2K / Quad HD | 4K UHD |
| Front Camera | - | 2 megapixel | 8 megapixel | 25 megapixel |
| Weight |
3.17 oz (90g) |
4.55 oz (129g) |
7.27 oz (206g) |
6 oz (170g) |
| Dimensions |
3.37" x 1.78" x 0.93" (86 x 45 x 23.6 mm) |
5.1" x 2.7" x 0.38" (130 x 69 x 9.6 mm) |
6.59" x 3.05" x 0.36" (167 x 77 x 9.1 mm) |
6.22" x 2.96" x 0.29" (158 x 75 x 7.4 mm) |
| Form Factor | Clamshell | Slab | Slab | Slab |
| Platform / OS | (proprietary) | Android | Android | Android |
| Network Bands |
GSM: 900, 1800, 1900 |
5G: 25, 41, 66, 71, 77-A, 77-C 4G LTE: 2, 4, 5, 7, 12, 25, 26, 41, 66, 71 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
4G LTE: 2, 3, 4, 5, 7, 12, 13, 20, 25, 26, 28, 29, 30, 38, 41, 66, 71 WCDMA: 1, 2, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
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| Data Technology | GPRS | WiMAX | NR (5G) | LTE (Cat 12) |
| Features | ||||
| Barometer | - | - | Yes | - |
| Fingerprint Reader | - | - |
Yes stand-alone |
Yes |
| Flashlight | - | - | Yes | Yes |
| GPS / Location | - | n/a | n/a | n/a |
| Water-Resistant | - | - | - | Yes |
| Accessibility | ||||
| Hearing Aid Compatible | - |
Yes M4, T3 (mostly tele-coil compatible) |
Yes Hearing Aid Compatible (HAC-2019 / M3, T3) |
Yes M4, T4 (very tele-coil compatible) |
| Multiple Languages | Yes | n/a | n/a | n/a |
| TTY/TDD (Digital) | - | Yes | - | Yes |
| Alerts | ||||
| Extra Display | Yes | - | - | - |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| Mobile Hotspot | - | n/a | n/a | n/a |
| NFC | - | - | Yes | Yes |
| USB | Yes |
Yes Micro-USB |
Yes USB Type C |
Yes USB Type C |
| Wi-Fi | - |
Yes 4 (802.11 a,b,g,n) |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 5 (802.11 a,ac,b,g,n) |
| Contacts | ||||
| Picture ID | Yes | n/a | n/a | n/a |
| Ringer ID | Yes | n/a | n/a | n/a |
| Voice Dialing | - | n/a | n/a | n/a |
| Customization | ||||
| Custom Graphics | Yes | n/a | n/a | n/a |
| Custom Ringtones | Yes | n/a | n/a | n/a |
| Real-Music Ringers | Yes | n/a | n/a | n/a |
| Data & Network | ||||
| Data Tethering | - | n/a | n/a | n/a |
| Dual-SIM | - | - | Yes | - |
| WAP / Web Browser | Yes | n/a | n/a | n/a |
| Input | ||||
| Predictive Text Entry | Yes | n/a | n/a | n/a |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen | - |
Yes Capacitive |
Yes Capacitive |
Yes Capacitive |
| Memory | ||||
| Memory Card Slot | - | Yes | Yes | Yes |
| Messaging | ||||
| Email Client | Yes | n/a | n/a | n/a |
| EMS / Picture Messaging | Yes | n/a | n/a | n/a |
| Instant Messaging | - | n/a | n/a | n/a |
| MMS | Yes | n/a | n/a | n/a |
| Text Messaging Templates | Yes | n/a | n/a | n/a |
| Music | ||||
| FM Radio | - | - | - | Yes |
| Headphone Jack (3.5mm) | - | Yes | Yes | Yes |
| Music Player | Yes | n/a | n/a | n/a |
| Stereo Speakers | - | - | Yes | - |
| Photo & Video | ||||
| DLNA | - | Yes | - | - |
| TV Output | - | Yes | - | - |
| Power | ||||
| Fast Charging | - | - | Yes | Yes |
| Productivity | ||||
| Alarm | Yes | n/a | n/a | n/a |
| Calculator | Yes | n/a | n/a | n/a |
| Calendar | Yes | n/a | n/a | n/a |
| To-Do List | Yes | n/a | n/a | n/a |
| Voice Memo | Yes | n/a | n/a | n/a |
| Software | ||||
| Games | Yes | n/a | n/a | n/a |
| Java (J2ME) | Yes | n/a | n/a | n/a |
| Voice | ||||
| HD Voice | - | - | Yes | Yes |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Samsung SGH-E640 | Samsung Galaxy S II, Epic 4G Touch | T-Mobile REVVL 7 5G | Motorola Moto z4 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-E640 | Samsung Galaxy S II, Epic 4G Touch | T-Mobile REVVL 7 5G | Motorola Moto z4 |
