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| Phone | Samsung Galaxy S II, Epic 4G Touch | AT&T Vista | ZTE Prelude / Avail 2 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size |
4.5" diag. 5 : 3 |
5.5" diag. 18 : 9 |
3.5" diag. 5 : 3 |
| Display Resolution & Type |
480 x 800 pixels (~206 ppi) AMOLED |
720 x 1440 pixels (~293 ppi) LCD (TFT/TFD) |
320 x 480 pixels (~165 ppi) LCD (TFT/TFD) |
| Display Refresh | 60 Hz | 60 Hz | 60 Hz |
| Battery | 1,800 mAh | 2,450 mAh | 1,500 mAh |
| Processor | 1.2 GHz Samsung Exynos C210 dual-core | 2 GHz MediaTek Helio A22 (MT6761V) | 1 GHz Qualcomm Snapdragon MSM7225A |
| RAM | ? | 3 GB | 512 MB |
| Storage | 16 GB | 32 GB | 4 GB |
| Main Camera | 8 megapixel | 8 megapixel | 2 megapixel |
| Wide Camera | - | - | - |
| Tele Camera | - | - | - |
| Video Capture | 1080p HD | 1080p HD | VGA (640 x 480) |
| Front Camera | 2 megapixel | 5 megapixel | - |
| Weight |
4.55 oz (129g) |
5.51 oz (156g) |
4.4 oz (125g) |
| Dimensions |
5.1" x 2.7" x 0.38" (130 x 69 x 9.6 mm) |
5.88" x 2.82" x 0.35" (149 x 72 x 8.9 mm) |
4.6" x 2.44" x 0.45" (117 x 62 x 11.4 mm) |
| Platform / OS | Android | Android | Android |
| Network Bands |
4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30 WCDMA: 1, 2, 4, 5, 8 |
WCDMA: 2, 5 GSM: 850, 1900 |
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| Data Technology | WiMAX | LTE (Cat 4) | HSPA 7.2 |
| Features | |||
| Flashlight | - | Yes | - |
| Accessibility | |||
| Hearing Aid Compatible | Yes | Yes | Yes |
| TTY/TDD (Digital) | Yes | - | Yes |
| Connectivity | |||
| Bluetooth | Yes | Yes | Yes |
| USB |
Yes Micro-USB |
Yes USB Type C |
Yes |
| Wi-Fi |
Yes 4 (802.11 a,b,g,n) |
Yes |
Yes 4 (802.11 b,g,n) |
| Input | |||
| Side Keys | Yes | Yes | Yes |
| Touch Screen | Yes | Yes | Yes |
| Memory | |||
| Memory Card Slot | Yes | Yes | Yes |
| Music | |||
| Headphone Jack (3.5mm) | Yes | Yes | Yes |
| Photo & Video | |||
| DLNA | Yes | - | - |
| TV Output | Yes | - | - |
| Voice | |||
| HD Voice | - | Yes | - |
| Speaker Phone | Yes | Yes | Yes |
| Samsung Galaxy S II, Epic 4G Touch | AT&T Vista | ZTE Prelude / Avail 2 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Samsung Galaxy S II, Epic 4G Touch | AT&T Vista | ZTE Prelude / Avail 2 |
