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| Phone | Nokia Lumia 521 / 520 | Alcatel Idol 4S | Samsung Galaxy J2 / J2 Pure / J2 Dash |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Not yet released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size |
4" diag. 5 : 3 |
5.5" diag. 16 : 9 |
5" diag. 16 : 9 |
| Display Resolution & Type |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
1440 x 2560 pixels (~534 ppi) AMOLED |
540 x 960 pixels (~220 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | 60 Hz |
| Battery | 1,430 mAh | 3,000 mAh | 2,600 mAh |
| Processor | 1 GHz Qualcomm Snapdragon S4 MSM8270 | 1.8 GHz Qualcomm Snapdragon 652 (MSM8976) | 1.4 GHz Samsung Exynos 7570 |
| RAM | 512 MB | 3 GB | 2 GB |
| Storage | 8 GB | 32 GB | 16 GB |
| Main Camera | 5 megapixel | 16 megapixel | 8 megapixel |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | 720p HD | 4K UHD | 1080p HD |
| Front Camera | - | 8 megapixel | 5 megapixel |
| Weight |
4.39 oz (124g) |
5.26 oz (149g) |
5.43 oz (154g) |
| Dimensions |
4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm) |
6.06" x 2.97" x 0.28" (154 x 75 x 7 mm) |
5.65" x 2.84" x 0.35" (144 x 72 x 8.9 mm) |
| Platform / OS | Windows | Android | Android |
| Network Bands |
4G LTE: 2, 4, 5, 7, 12, 17 WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900 |
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| Data Technology | HSPA+ 21 | LTE (Cat 4) | LTE (Cat 4) |
| Features | |||
| Fingerprint Reader | - | Yes * | - |
| Flashlight | - | Yes | Yes |
| Accessibility | |||
| Hearing Aid Compatible |
Yes M3, T4 (very tele-coil compatible) |
Yes M4, T4 (very tele-coil compatible) |
Yes M3, T3 (mostly tele-coil compatible) |
| TTY/TDD (Digital) | Yes | Yes | Yes |
| Connectivity | |||
| Bluetooth | Yes | Yes | Yes |
| NFC | - | Yes | - |
| USB | Yes |
Yes Micro-USB |
Yes Micro-USB |
| Wi-Fi | Yes |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 4 (802.11 b,g,n) |
| Data & Network | |||
| Dual-SIM | - | Yes * | - |
| Input | |||
| Side Keys | Yes | Yes | Yes |
| Touch Screen |
Yes Capacitive |
Yes Capacitive |
Yes Capacitive |
| Memory | |||
| Memory Card Slot | Yes | Yes | Yes |
| Music | |||
| Headphone Jack (3.5mm) | Yes | Yes | Yes |
| Stereo Speakers | - | Yes | - |
| Photo & Video | |||
| Miracast | - | Yes | - |
| Power | |||
| Fast Charging | - | Yes | - |
| Voice | |||
| HD Voice | - | Yes | - |
| Speaker Phone | Yes | Yes | Yes |
| * Some versions only | |||
| Nokia Lumia 521 / 520 | Alcatel Idol 4S | Samsung Galaxy J2 / J2 Pure / J2 Dash | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Nokia Lumia 521 / 520 | Alcatel Idol 4S | Samsung Galaxy J2 / J2 Pure / J2 Dash |
