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| Phone | Palm Treo 650 (CDMA) | ZTE Agent | ZTE Engage LT / Engage MT | Samsung Sidekick 4G | Boost Celero5G+ (2024) |
| Current U.S. Carriers | (none) | (none) | (none) | (none) | Boost |
| Global Availability | Released | Released | Released | Released | Released |
| Specifications | |||||
|---|---|---|---|---|---|
| Display Size | ? |
2.4" diag. 4 : 3 |
4" diag. 5 : 3 |
3.5" diag. 5 : 3 |
7" diag. 20.5 : 9 |
| Display Resolution & Type |
320 x 320 pixels LCD (TFT/TFD) |
240 x 320 pixels (~167 ppi) LCD (TFT/TFD) |
480 x 800 pixels (~233 ppi) LCD (TFT/TFD) |
480 x 800 pixels (~267 ppi) LCD (TFT/TFD) |
1080 x 2460 pixels (~384 ppi) LCD (TFT/TFD) |
| Display Refresh | ? | ? | 60 Hz | 60 Hz | 120 Hz |
| Battery | ? | 900 mAh | 1,900 mAh | ? | 5,000 mAh |
| Processor | 312 MHz Intel XScale PXA270 | ? | ? | 1 GHz Samsung Hummingbird Cortex A8 | 2.5 GHz MediaTek Dimensity 1050 (MT6879) |
| RAM | ? | ? | 1 GB | ? | 8 GB |
| Storage | ? raw hardware | ? raw hardware | 4 GB | ? raw hardware | 256 GB |
| Main Camera | Yes | 1 megapixel | 3 megapixel | 3 megapixel | 108 megapixel |
| Wide Camera | - | - | - | - | 8 megapixel |
| Tele Camera | - | - | - | - | - |
| Video Capture | QVGA (320 x 240) | ? | WVGA / 480p | WVGA / 480p | 1080p HD |
| Front Camera | - | - | Yes | Yes | 16 megapixel |
| Weight |
6.3 oz (179g) |
3.53 oz (100g) |
5.09 oz (144g) |
5.7 oz (162g) |
8.25 oz (234g) |
| Dimensions |
4.4" x 2.3" x 0.9" (112 x 58 x 22.9 mm) |
4.3" x 1.9" x 0.6" (109 x 48 x 15.2 mm) |
4.78" x 2.54" x 0.46" (121 x 64 x 11.7 mm) |
5" x 2.42" x 0.6" (127 x 61 x 15.2 mm) |
7.04" x 3.12" x 0.37" (179 x 79 x 9.4 mm) |
| Form Factor | Slab | Slab | Slab | Slide | Slab |
| Platform / OS | Palm OS | (proprietary) | Android | Android | Android |
| Network Bands |
CDMA: 850, 1900 |
CDMA: 850, 1700, 1900 |
CDMA: 850, 1700, 1900 |
WCDMA: 1, 4 GSM: 850, 900, 1800, 1900 |
5G: 2, 5, 25, 26, 29, 30, 41, 48, 66, 70, 71, 77-C 4G LTE: 2, 4, 5, 12, 14, 26, 29, 30, 48, 66, 71 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 |
| Data Technology | 1xRTT | 1xRTT | EVDO rA | HSPA+ 21 | NR (5G) |
| Features | |||||
| Barometer | - | - | - | - | Yes |
| Fingerprint Reader | - | - | - | - |
Yes stand-alone |
| Flashlight | - | - | - | - | Yes |
| GPS / Location | n/a | Yes | n/a | n/a | n/a |
| Water-Resistant | - | - | - | - |
Yes IPX8 (SCUBA) |
| Accessibility | |||||
| Adjustable Text Size | n/a | - | n/a | n/a | n/a |
| Hearing Aid Compatible | - | Yes | - | Yes | Yes |
| Multiple Languages | n/a | Yes | n/a | n/a | n/a |
| TTY/TDD (Digital) | - | Yes | Yes | Yes | - |
| Connectivity | |||||
| Bluetooth |
Yes Classic Audio |
Yes Classic Audio |
Yes Classic Audio |
Yes Classic Audio |
Yes Classic Audio |
| Infrared (IR) | Yes | - | - | - | - |
| Mobile Hotspot | n/a | - | n/a | n/a | n/a |
| NFC | - | - | - | - | Yes |
| USB | - |
Yes Micro-USB |
Yes Micro-USB |
Yes Micro-USB |
Yes USB Type C |
| Wi-Fi | - | - | Yes |
Yes 4 (802.11 b,g,n) |
Yes 6E (802.11 a,ac,ax,b,g,n) |
| Contacts | |||||
| Picture ID | n/a | - | n/a | n/a | n/a |
| Ringer ID | n/a | Yes | n/a | n/a | n/a |
| Voice Dialing | n/a | - | n/a | n/a | n/a |
| Customization | |||||
| Custom Graphics | n/a | Yes | n/a | n/a | n/a |
| Custom Ringtones | n/a | Yes | n/a | n/a | n/a |
| Real-Music Ringers | n/a | Yes | n/a | n/a | n/a |
| Data & Network | |||||
| Data Tethering | n/a | - | n/a | n/a | n/a |
| WAP / Web Browser | n/a | Yes | n/a | n/a | n/a |
| Input | |||||
| Predictive Text Entry | n/a | Yes | n/a | n/a | n/a |
| Side Keys | Yes | Yes | Yes | Yes | Yes |
| Text Keyboard, Hardware | Yes | - | - | Yes | - |
| Touch Screen | Yes | - | Yes | Yes | Yes |
| Memory | |||||
| Memory Card Slot | Yes | Yes | Yes | Yes | Yes |
| Messaging | |||||
| Email Client | n/a | Yes | n/a | n/a | n/a |
| Instant Messaging | n/a | Yes | n/a | n/a | n/a |
| MMS | n/a | Yes | n/a | n/a | n/a |
| Text Messaging Templates | n/a | Yes | n/a | n/a | n/a |
| Music | |||||
| FM Radio | - | - | - | - | Yes |
| Headphone Jack (3.5mm) | - | Yes | Yes | Yes | Yes |
| Music Player | n/a | Yes | n/a | n/a | n/a |
| Photo & Video | |||||
| DLNA | - | - | - | Yes | - |
| Power | |||||
| Fast Charging | - | - | - | - | Yes |
| Wireless Charging | - | - | - | - | Yes |
| Productivity | |||||
| Alarm | n/a | Yes | n/a | n/a | n/a |
| Calculator | n/a | Yes | n/a | n/a | n/a |
| Calendar | n/a | Yes | n/a | n/a | n/a |
| To-Do List | n/a | - | n/a | n/a | n/a |
| Voice Memo | n/a | Yes | n/a | n/a | n/a |
| Software | |||||
| BREW | n/a | Yes | n/a | n/a | n/a |
| Games | n/a | Yes | n/a | n/a | n/a |
| Voice | |||||
| HD Voice | - | - | - | - | Yes |
| Headset Jack (2.5 mm) | n/a | - | n/a | n/a | n/a |
| Speaker Phone | Yes | Yes | Yes | Yes | Yes |
| Palm Treo 650 (CDMA) | ZTE Agent | ZTE Engage LT / Engage MT | Samsung Sidekick 4G | Boost Celero5G+ (2024) | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Palm Treo 650 (CDMA) | ZTE Agent | ZTE Engage LT / Engage MT | Samsung Sidekick 4G | Boost Celero5G+ (2024) |











