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| Phone | Samsung SGH-E640 | Samsung Galaxy S8+ | Samsung Galaxy Z Flip5 | ZTE Z221 |
| Current U.S. Carriers | (none) | (none) |
AT&T Spectrum Mobile Verizon Xfinity Mobile |
(none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
6.2" diag. 18.5 : 9 |
6.7" diag. 22 : 9 |
2" diag. 4 : 3 |
| Display Resolution & Type |
176 x 220 pixels LCD (TFT/TFD) |
1440 x 2960 pixels (~531 ppi) AMOLED |
1080 x 2640 pixels (~426 ppi) AMOLED |
240 x 320 pixels (~200 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | 120 Hz | ? |
| Battery | 800 mAh | 3,500 mAh | 3,700 mAh | 900 mAh |
| Processor | ? | 2.3 GHz Qualcomm Snapdragon 835 (MSM8998) | Snapdragon 8 Gen 2 for Galaxy | ? |
| RAM | ? | 4 GB | 8 GB | ? |
| Storage | ? raw hardware | 64 GB | 256 GB * | 142 MB |
| Main Camera | 1 megapixel | 12 megapixel | 12 megapixel | Yes |
| Wide Camera | - | - | 12 megapixel | - |
| Tele Camera | - | - | - | - |
| Video Capture | QCIF (176 x 144) | 4K UHD | 4K UHD | QCIF (176 x 144) |
| Front Camera | - | 8 megapixel | 10 megapixel | - |
| Weight |
3.17 oz (90g) |
6.1 oz (173g) |
6.6 oz (187g) |
3.24 oz (92g) |
| Dimensions |
3.37" x 1.78" x 0.93" (86 x 45 x 23.6 mm) |
6.28" x 2.89" x 0.32" (160 x 73 x 8.1 mm) |
3.35" x 2.83" x 0.59" (85 x 72 x 15 mm) |
3.76" x 1.92" x 0.73" (96 x 49 x 18.5 mm) |
| Form Factor | Clamshell | Slab | Foldable | Clamshell |
| Platform / OS | (proprietary) | Android | Android | (proprietary) |
| Network Bands |
GSM: 900, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 40, 41, 66 WCDMA: 1, 2, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
5G: 2, 5, 7, 12, 25, 26, 30, 41, 48, 66, 71, 77-A, 77-C, 78, 257, 258, 260, 261 4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 48, 66, 71 WCDMA: 1, 2, 4, 5, 8 GSM: 850, 900, 1800, 1900 |
WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 |
| Data Technology | GPRS | LTE (Cat 16) | NR (5G) | HSDPA 3.6 |
| Features | ||||
| Barometer | - | - | Yes | - |
| Fingerprint Reader | - |
Yes stand-alone |
Yes stand-alone |
- |
| Flashlight | - | Yes | Yes | - |
| GPS / Location | - | n/a | n/a | Yes |
| VR-ready | - | Yes | - | - |
| Water-Resistant | - |
Yes IPX8 (SCUBA) |
Yes IPX8 (SCUBA) |
- |
| Accessibility | ||||
| Hearing Aid Compatible | - |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
| Multiple Languages | Yes | n/a | n/a | Yes |
| TTY/TDD (Digital) | - | Yes | Yes | Yes |
| Alerts | ||||
| Extra Display | Yes | - | Yes | Yes |
| Ringer Profiles | - | - | - | Yes |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| MirrorLink | - | Yes | - | - |
| NFC | - | Yes | Yes | - |
| USB | Yes |
Yes USB Type C |
Yes USB Type C |
Yes |
| Wi-Fi | - |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 6E (802.11 a,ac,ax,b,g,n) |
- |
| Contacts | ||||
| Picture ID | Yes | n/a | n/a | - |
| Ringer ID | Yes | n/a | n/a | - |
| Customization | ||||
| Custom Graphics | Yes | n/a | n/a | Yes |
| Custom Ringtones | Yes | n/a | n/a | Yes |
| Real-Music Ringers | Yes | n/a | n/a | Yes |
| Data & Network | ||||
| Dual-SIM | - | - | Yes | - |
| WAP / Web Browser | Yes | n/a | n/a | Yes |
| Input | ||||
| Predictive Text Entry | Yes | n/a | n/a | Yes |
| Side Keys | Yes | Yes | Yes | Yes |
| Touch Screen | - |
Yes Capacitive |
Yes Capacitive |
- |
| Memory | ||||
| Memory Card Slot | - | Yes | - | - |
| Messaging | ||||
| Email Client | Yes | n/a | n/a | Yes |
| EMS / Picture Messaging | Yes | n/a | n/a | - |
| Instant Messaging | - | n/a | n/a | Yes |
| MMS | Yes | n/a | n/a | Yes |
| Text Messaging Templates | Yes | n/a | n/a | Yes |
| Music | ||||
| Headphone Jack (3.5mm) | - | Yes | - | - |
| Music Player | Yes | n/a | n/a | - |
| Power | ||||
| Fast Charging | - | Yes | Yes | - |
| Wireless Charging | - | Yes | Yes | - |
| Productivity | ||||
| Alarm | Yes | n/a | n/a | Yes |
| Calculator | Yes | n/a | n/a | Yes |
| Calendar | Yes | n/a | n/a | Yes |
| To-Do List | Yes | n/a | n/a | - |
| Voice Memo | Yes | n/a | n/a | Yes |
| Software | ||||
| Games | Yes | n/a | n/a | Yes |
| Java (J2ME) | Yes | n/a | n/a | Yes |
| Voice | ||||
| HD Voice | - | Yes | Yes | - |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Samsung SGH-E640 | Samsung Galaxy S8+ | Samsung Galaxy Z Flip5 | ZTE Z221 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-E640 | Samsung Galaxy S8+ | Samsung Galaxy Z Flip5 | ZTE Z221 |
