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| Phone | Samsung SGH-E640 | LG K8 (2018) / Zone 4 / Tribute Dynasty / Tribute Empire / K8s | ZTE Blade Max 3 / Max Blue | Alcatel Go Flip 3 / SmartFlip | Nokia 5230 Nuron |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size | ? |
5" diag. 16 : 9 |
6" diag. 16 : 9 |
2.8" diag. 4 : 3 |
3.2" diag. 16 : 9 |
| Display Resolution & Type |
176 x 220 pixels LCD (TFT/TFD) |
720 x 1280 pixels (~294 ppi) LCD (TFT/TFD) |
1080 x 1920 pixels (~367 ppi) LCD (TFT/TFD) |
240 x 320 pixels (~143 ppi) LCD (TFT/TFD) |
360 x 640 pixels (~229 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | 60 Hz | ? | ? |
| Battery | 800 mAh | 2,500 mAh | 4,000 mAh | 1,350 mAh | 1,320 mAh |
| Processor | ? | 1.4 GHz Qualcomm Snapdragon 425 (MSM8917) | 2 GHz Qualcomm Snapdragon 625 (MSM8953) | 1.1 GHz Qualcomm Snapdragon 210 (MSM8909) | 434 MHz ARM 11 |
| RAM | ? | 2 GB | 2 GB | 512 MB | ? |
| Storage | ? raw hardware | 16 GB | 16 GB | 4 GB | ? raw hardware |
| Main Camera | 1 megapixel | 8 megapixel | 13 megapixel | 2 megapixel | 2 megapixel |
| Wide Camera | - | - | - | - | - |
| Tele Camera | - | - | - | - | - |
| Video Capture | QCIF (176 x 144) | 1080p HD | 4K UHD | 720p HD | VGA (640 x 480) |
| Front Camera | - | 5 megapixel | 5 megapixel | - | - |
| Weight |
3.17 oz (90g) |
4.94 oz (140g) |
6.34 oz (180g) |
4.16 oz (118g) |
3.98 oz (113g) |
| Dimensions |
3.37" x 1.78" x 0.93" (86 x 45 x 23.6 mm) |
5.7" x 2.84" x 0.32" (145 x 72 x 8.1 mm) |
6.49" x 3.3" x 0.35" (165 x 84 x 8.9 mm) |
4.13" x 2.09" x 0.75" (105 x 53 x 19.1 mm) |
4.37" x 2.03" x 0.57" (111 x 52 x 14.5 mm) |
| Form Factor | Clamshell | Slab | Slab | Clamshell | Slab |
| Platform / OS | (proprietary) | Android | Android | (proprietary) | S60 (Symbian) |
| Network Bands |
GSM: 900, 1800, 1900 |
4G LTE: 2, 4, 5, 12, 13, 25 WCDMA: 2, 4, 5 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900 |
4G LTE: 2, 4, 5, 12, 14, 25, 26, 41, 66, 71 WCDMA: 2, 4, 5 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
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| Data Technology | GPRS | LTE (Cat 4) | LTE (Cat 4) | LTE (Cat 4) | HSDPA 3.6 |
| Features | |||||
| Fingerprint Reader | - | - |
Yes stand-alone |
- | - |
| Flashlight | - | Yes | Yes | - | - |
| GPS / Location | - | n/a | n/a | Yes | n/a |
| Accessibility | |||||
| Adjustable Text Size | - | n/a | n/a | Yes | n/a |
| Hearing Aid Compatible | - | Yes | Yes | Yes | - |
| Multiple Languages | Yes | n/a | n/a | Yes | n/a |
| TTY/TDD (Digital) | - | Yes | Yes | Yes | Yes |
| Alerts | |||||
| Extra Display | Yes | - | - | Yes | - |
| Ringer Profiles | - | - | - | - | Yes |
| Connectivity | |||||
| Bluetooth |
Yes Classic Audio |
Yes Classic Audio |
Yes Classic Audio |
Yes Classic Audio |
Yes Classic Audio |
| Mobile Hotspot | - | n/a | n/a | Yes * | n/a |
| USB | Yes |
Yes Micro-USB |
Yes USB Type C |
Yes Micro-USB |
Yes Micro-USB |
| Wi-Fi | - |
Yes 4 (802.11 b,g,n) |
Yes 5 (802.11 ac,b,g,n) |
Yes 4 (802.11 b,g,n) |
- |
| Contacts | |||||
| Picture ID | Yes | n/a | n/a | Yes | n/a |
| Ringer ID | Yes | n/a | n/a | Yes | n/a |
| Voice Dialing | - | n/a | n/a | Yes | n/a |
| Customization | |||||
| Custom Graphics | Yes | n/a | n/a | Yes | n/a |
| Custom Ringtones | Yes | n/a | n/a | Yes | n/a |
| Real-Music Ringers | Yes | n/a | n/a | Yes | n/a |
| Data & Network | |||||
| Data Tethering | - | n/a | n/a | Yes | n/a |
| WAP / Web Browser | Yes | n/a | n/a | Yes | n/a |
| Input | |||||
| Predictive Text Entry | Yes | n/a | n/a | Yes | n/a |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Stylus | - | - | - | - | Yes |
| Touch Screen | - | Yes | Yes | - | Yes |
| Memory | |||||
| Memory Card Slot | - | Yes | Yes | Yes | Yes |
| Messaging | |||||
| Email Client | Yes | n/a | n/a | Yes | n/a |
| EMS / Picture Messaging | Yes | n/a | n/a | - | n/a |
| Instant Messaging | - | n/a | n/a | Yes | n/a |
| MMS | Yes | n/a | n/a | Yes | n/a |
| Text Messaging Templates | Yes | n/a | n/a | - | n/a |
| Music | |||||
| FM Radio | - | - | - | Yes | Yes |
| Headphone Jack (3.5mm) | - | Yes | Yes | Yes | Yes |
| Music Player | Yes | n/a | n/a | Yes | n/a |
| Stereo Speakers | - | - | - | - | Yes |
| Power | |||||
| Fast Charging | - | - | Yes | - | - |
| Productivity | |||||
| Alarm | Yes | n/a | n/a | Yes | n/a |
| Calculator | Yes | n/a | n/a | Yes | n/a |
| Calendar | Yes | n/a | n/a | Yes | n/a |
| To-Do List | Yes | n/a | n/a | - | n/a |
| Voice Memo | Yes | n/a | n/a | Yes | n/a |
| Software | |||||
| Games | Yes | n/a | n/a | Yes | n/a |
| Java (J2ME) | Yes | n/a | n/a | - | n/a |
| Voice | |||||
| HD Voice | - | Yes | - | Yes | - |
| Speaker Phone | Yes | Yes | Yes | Yes | Yes |
| * Some versions only | |||||
| Samsung SGH-E640 | LG K8 (2018) / Zone 4 / Tribute Dynasty / Tribute Empire / K8s | ZTE Blade Max 3 / Max Blue | Alcatel Go Flip 3 / SmartFlip | Nokia 5230 Nuron | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung SGH-E640 | LG K8 (2018) / Zone 4 / Tribute Dynasty / Tribute Empire / K8s | ZTE Blade Max 3 / Max Blue | Alcatel Go Flip 3 / SmartFlip | Nokia 5230 Nuron |
