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| Phone | Apple iPhone 4 (GSM) | Samsung Galaxy A21 | Motorola i830 / i833 / i835 / i836 |
| Current U.S. Carriers | (none) | (none) | (none) |
| Global Availability | Released | Released | Released |
| Specifications | |||
|---|---|---|---|
| Display Size |
3.5" diag. 5 : 3 |
6.5" diag. 20 : 9 |
? |
| Display Resolution & Type |
640 x 960 pixels (~330 ppi) LCD (TFT/TFD) |
720 x 1600 pixels (~270 ppi) LCD (TFT/TFD) |
130 x 130 pixels LCD (TFT/TFD) |
| Display Refresh | 60 Hz | 60 Hz | ? |
| Battery | ? | 4,000 mAh | ? |
| Processor | Apple A4 | 2 GHz MediaTek Helio P35 (MT6765) | ? |
| RAM | ? | 3 GB | ? |
| Storage | 32 GB * | 32 GB | ? raw hardware |
| Main Camera | 5 megapixel | 16 megapixel | - |
| Wide Camera | - | 8 megapixel | - |
| Tele Camera | - | - | - |
| Video Capture | 720p HD | 1080p HD | - |
| Front Camera | Yes | 13 megapixel | - |
| Weight |
4.8 oz (136g) |
6.81 oz (193g) |
3.94 oz (112g) |
| Dimensions |
4.5" x 2.31" x 0.37" (114 x 59 x 9.4 mm) |
6.61" x 3.02" x 0.32" (168 x 77 x 8.1 mm) |
3.35" x 1.77" x 0.79" (85 x 45 x 20.1 mm) |
| Form Factor | Slab | Slab | Clamshell |
| Platform / OS | iOS | Android | (proprietary) |
| Network Bands |
WCDMA: 1, 2, 5, 8 GSM: 850, 900, 1800, 1900 |
4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 20, 25, 26, 28, 38, 39, 40, 41, 66, 71 WCDMA: 1, 2, 4, 5, 8 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900 |
iDEN: 800 |
| Data Technology | HSPA 7.2 | LTE (Cat 6) | - |
| Features | |||
| Fingerprint Reader | - |
Yes stand-alone |
- |
| Flashlight | - | Yes | - |
| GPS / Location | n/a | n/a | Yes |
| Accessibility | |||
| Adjustable Text Size | n/a | n/a | - |
| Hearing Aid Compatible |
Yes M3, T3 (mostly tele-coil compatible) |
Yes M4, T3 (mostly tele-coil compatible) |
Yes M3 (mostly compatible) |
| Multiple Languages | n/a | n/a | Yes |
| TTY/TDD (Digital) | Yes | Yes | Yes |
| Alerts | |||
| Extra Display | - | - | Yes |
| Ringer Profiles | - | - | Yes |
| Connectivity | |||
| Bluetooth | Yes | Yes | - |
| Mobile Hotspot | n/a | n/a | - |
| NFC | - | Yes | - |
| USB | Yes |
Yes USB Type C |
Yes |
| Wi-Fi |
Yes 4 (802.11 b,g,n) |
Yes 5 (802.11 a,ac,b,g,n) |
- |
| Contacts | |||
| Picture ID | n/a | n/a | Yes |
| Ringer ID | n/a | n/a | Yes |
| Voice Dialing | n/a | n/a | Yes |
| Customization | |||
| Custom Graphics | n/a | n/a | Yes |
| Custom Ringtones | n/a | n/a | Yes |
| Real-Music Ringers | n/a | n/a | - |
| Data & Network | |||
| Data Tethering | n/a | n/a | Yes |
| WAP / Web Browser | n/a | n/a | Yes |
| Input | |||
| Predictive Text Entry | n/a | n/a | Yes |
| Side Keys | Yes | Yes | Yes |
| Touch Screen |
Yes Capacitive |
Yes Capacitive |
- |
| Memory | |||
| Memory Card Slot | - | Yes | - |
| Messaging | |||
| Email Client | n/a | n/a | - |
| MMS | n/a | n/a | Yes |
| Music | |||
| Headphone Jack (3.5mm) | Yes | Yes | - |
| Music Player | n/a | n/a | - |
| Photo & Video | |||
| TV Output | Yes | - | - |
| Power | |||
| Fast Charging | - | Yes | - |
| Productivity | |||
| Alarm | n/a | n/a | - |
| Calculator | n/a | n/a | - |
| Calendar | n/a | n/a | Yes |
| Voice Memo | n/a | n/a | Yes |
| Software | |||
| Games | n/a | n/a | Yes |
| Java (J2ME) | n/a | n/a | Yes |
| Voice | |||
| HD Voice | - | Yes | - |
| Headset Jack (2.5 mm) | n/a | n/a | Yes |
| Push-To-Talk | - | - | Yes |
| Speaker Phone | Yes | Yes | Yes |
| * Some versions only | |||
| Apple iPhone 4 (GSM) | Samsung Galaxy A21 | Motorola i830 / i833 / i835 / i836 | |
NOTE: Differences are highlighted with bold / black text for visual clarity only.
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| Phone | Apple iPhone 4 (GSM) | Samsung Galaxy A21 | Motorola i830 / i833 / i835 / i836 |
