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| Phone | Palm Treo Pro (CDMA) | AT&T Maestro 3 | ZTE Blade Z Max | HTC Droid Eris |
| Current U.S. Carriers | (none) | (none) | (none) | (none) |
| Global Availability | Released | Released | Released | Released |
| Specifications | ||||
|---|---|---|---|---|
| Display Size | ? |
6.5" diag. 20 : 9 |
6" diag. 16 : 9 |
3.2" diag. 5 : 3 |
| Display Resolution & Type |
320 x 320 pixels LCD (TFT/TFD) |
720 x 1600 pixels (~270 ppi) LCD (TFT/TFD) |
1080 x 1920 pixels (~367 ppi) LCD (TFT/TFD) |
320 x 480 pixels (~180 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | 60 Hz | 60 Hz | 60 Hz |
| Battery | 1,500 mAh | 3,900 mAh | 4,080 mAh | 1,300 mAh |
| Processor | 528 MHz Qualcomm MSM7501a | 2 GHz MediaTek Helio A22 (MT6761) | 1.4 GHz Qualcomm Snapdragon 435 (MSM8940) | 528 MHz MSM7600 |
| RAM | ? | 3 GB | 2 GB | ? |
| Storage | ? raw hardware | 32 GB | 32 GB | ? raw hardware |
| Main Camera | 2 megapixel | 13 megapixel | 16 megapixel | 5 megapixel |
| Wide Camera | - | 5 megapixel | - | - |
| Tele Camera | - | - | - | - |
| Video Capture | ? | 1080p HD | 1080p HD | CIF (352 x 288) |
| Front Camera | - | 5 megapixel | 8 megapixel | - |
| Weight |
4.69 oz (133g) |
6.24 oz (177g) |
6.58 oz (186g) |
4.43 oz (126g) |
| Dimensions |
4.49" x 2.36" x 0.53" (114 x 60 x 13.5 mm) |
6.58" x 3.03" x 0.33" (167 x 77 x 8.4 mm) |
6.51" x 3.28" x 0.33" (165 x 83 x 8.3 mm) |
4.45" x 2.19" x 0.52" (113 x 55 x 13.2 mm) |
| Platform / OS | Windows Mobile Professional | Android | Android | Android |
| Network Bands |
CDMA: 850, 1900 |
4G LTE: 2, 4, 5, 12, 14, 30 |
4G LTE: 2, 4, 5, 12, 66 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
CDMA: 850, 1900 |
| Data Technology | EVDO rA | LTE (Cat 4) | LTE (Cat 6) | EVDO rA |
| Features | ||||
| Barometer | - | Yes | - | - |
| Fingerprint Reader | - |
Yes stand-alone |
Yes stand-alone |
- |
| Flashlight | - | Yes | Yes | - |
| Accessibility | ||||
| Hearing Aid Compatible | Yes | Yes | Yes | Yes |
| TTY/TDD (Digital) | Yes | - | Yes | Yes |
| Connectivity | ||||
| Bluetooth | Yes | Yes | Yes | Yes |
| Infrared (IR) | Yes | - | - | - |
| USB |
Yes Micro-USB |
Yes USB Type C |
Yes USB Type C |
Yes Mini-USB |
| Wi-Fi |
Yes 802.11 b,g |
Yes 5 (802.11 a,ac,b,g,n) |
Yes 4 (802.11 b,g,n) |
Yes 802.11 b,g |
| Input | ||||
| Side Keys | Yes | Yes | Yes | Yes |
| Stylus | Yes | - | - | - |
| Text Keyboard, Hardware | Yes | - | - | - |
| Touch Screen | Yes | Yes | Yes | Yes |
| Memory | ||||
| Memory Card Slot | Yes | Yes | Yes | Yes |
| Music | ||||
| FM Radio | - | - | Yes | - |
| Headphone Jack (3.5mm) | Yes | Yes | Yes | Yes |
| Power | ||||
| Fast Charging | - | - | Yes | - |
| Voice | ||||
| HD Voice | - | Yes | Yes | - |
| Speaker Phone | Yes | Yes | Yes | Yes |
| Palm Treo Pro (CDMA) | AT&T Maestro 3 | ZTE Blade Z Max | HTC Droid Eris | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Palm Treo Pro (CDMA) | AT&T Maestro 3 | ZTE Blade Z Max | HTC Droid Eris |
