| Physical features | Amazon Fire Phone (32GB) | Vivo X50 Pro+ (256GB/8GB) |
| Model | Fire Phone (32GB) | X50 Pro+ (256GB/8GB) |
| Other model names | AT&T Amazon Fire Phone 4G LTE 32GB, Amazon FirePhone | vivo X50 Pro Plus V2011A (256GB + 8GB RAM) |
| Country or region available | 
USA | 
China |
| Brand | Amazon | Vivo |
| Release date | July, 2014 | July, 2020 |
| Depth | 8.9 millimeters (0.35 inches) | 8.8 millimeters (0.35 inches) |
| Size (width x height) | 66.5 x 139.2 millimeters (2.62 x 5.48 in) | 73 x 158.5 millimeters (2.87 x 6.24 in) |
| Weight | 160 grams (5.6 ounces) | 192 grams (6.72 ounces) |
| Qwerty physical keyboard | Not supported | Not supported |
| Antenna | Internal antenna | Internal antenna |
| Build, materials | feature not registered | Aluminum frame, glass front/back |
| Protection against water and others | Not supported | Not supported |
| System (OS) | Amazon Fire Phone (32GB) | Vivo X50 Pro+ (256GB/8GB) |
| Operating system | Android 4.2.2 Jelly Bean | Android 10 |
| Firmware update | feature not registered | feature not registered |
| Hardware | Amazon Fire Phone (32GB) | Vivo X50 Pro+ (256GB/8GB) |
| Chipset | 32bit - Qualcomm Snapdragon 800 MSM8974 (28nm) | 64bit - Qualcomm Snapdragon 865 SM8250 (7nm) |
| CPU processor | 2.2Ghz Quad-Core Krait 400 | Octa-Core, 3 processors:
2.84Ghz Single-Core Kryo 585
2.42Ghz 3-Cores Kryo 585
1.8Ghz Quad-Core Kryo 585 |
| GPU graphical controller | Qualcomm Adreno 330 | Qualcomm Adreno 650 587Mhz |
| RAM memory | 2GB LPDDR3 | 8GB LPDDR4X |
| Internal storage | 32GB (25GB available) | 256GB (230GB available)
UFS 2.1 |
| External storage | Not supported | Not supported |
| Display | Amazon Fire Phone (32GB) | Vivo X50 Pro+ (256GB/8GB) |
| Display type | TFT IPS LCD | AMOLED |
| Screen size | 4.7" inches | 6.56" inches |
| Screen-to-body ratio | ~65.8% (screen-to-body ratio) | ~90.4% (screen-to-body ratio) |
| Display resolution | 720x1280 pixels | 1080x2376 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 312 PPI | 398 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 3 | Not supported |
| Display features | feature not registered | 120Hz, HDR10+ |
| Mobile networks | Amazon Fire Phone (32GB) | Vivo X50 Pro+ (256GB/8GB) |
| Dual-SIM | Not supported | Dual-SIM Standby - Call active on one sim card |
| SIM card | 1 slot (Single-SIM)
nano-SIM (4FF) | 2 slots (Dual-SIM)
nano-SIM (4FF) |
| Maximum download/upload | 100/50 Mbps | 2000/150 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G, 4G, 5G |
| Frequency, bands | Expand band detailsCollapse details |
| GSM Mhz band | Quad-Band 850/900/1800/1900 | Quad-Band 850/900/1800/1900 |
| Primary 2G network | GSM 850/900/1800/1900 | CDMA 800, GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/900/1700/1900/2100 | CDMA2000 1xEV-DO
TD-SCDMA 1900/2000
UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat3 700/800/850/900/1700/1800/1900/2100/2600 (Bands 1,2,3,4,5,7,8,17,20) | LTE Cat6 (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 26)
TD-LTE (34, 38, 39, 40, 41)
VoLTE |
| Primary 5G network | Not supported | SA/NSA (1, 3, 41, 77, 78, 79) |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, 5G SA/NSA |
| Secondary 2G network | Not supported | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | GPRS, EDGE |
| Calling | Amazon Fire Phone (32GB) | Vivo X50 Pro+ (256GB/8GB) |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
| Speakerphone | Supported | Supported |
| Video calling | Supported | Supported |
| Call control | Voice recorder | Voice dialing, Voice recorder, Voice commands |
| Camera | Amazon Fire Phone (32GB) | Vivo X50 Pro+ (256GB/8GB) |
| Back camera (main camera) | 13 megapixels | (quad camera)
50 megapixels
32MP telephotof/2.150mm1/2.8"0.8µmPDAF2x-optical-zoom
13MP periscope telephotof/3.0135mm1/3.1"1.12µmPDAFOIS5x-optical-zoom
13MP ultrawidef/2.2120º16mm1/3.4"1.0µm |
| Main camera resolution | 4128x3096 pixels | 8160x6120 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | 8K UHD (7680x4320) 24 fps |
| Flash | LED flash | Dual-LED flash |
| Focal aperture | f/2.0 (aperture) | f/1.9 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | 1/1.31" inches |
| Pixel size | feature not registered | 1.2µm pixel |
| Autofocus | Autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | OIS: Optical stabilization | OIS: Optical stabilization |
| Zoom | Only digital zoom | Digital and optical zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Not supported | Not supported |
| HDR | HDR photo only main camera | HDR photo on both cameras |
| 2ª camera | Amazon Fire Phone (32GB) | Vivo X50 Pro+ (256GB/8GB) |
| Front camera (secondary) | 2.1 megapixels | 32 megapixels |
| Front camera resolution | 1920x1080 pixels | 6528x4896 pixels |
| Video recording (secondary) | Full HD (1920x1080) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | feature not registered |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
| Multimedia | Amazon Fire Phone (32GB) | Vivo X50 Pro+ (256GB/8GB) |
| Radio | Not supported | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263 | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, eAAC+ | MP3, WAV, WMA, eAAC+, FLAC |
| Connectivity | Amazon Fire Phone (32GB) | Vivo X50 Pro+ (256GB/8GB) |
| USB | MicroUSB 2.0 | USB 2.0 Type-C, USB OTG On-The-Go |
| TV output | Not supported | USB Type-C (reversible) |
| Audio output | 3.5mm jack | Type-C reversible connector |
| Bluetooth | 3.0 + A2DP | 5.1 + A2DP/LE |
| WiFi | 802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) | 802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO |
| DLNA | Not supported | Not supported |
| NFC | Supported | Supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| Infrared port | Not supported | Not supported |
| Other functions | Amazon Fire Phone (32GB) | Vivo X50 Pro+ (256GB/8GB) |
| Active noise cancellation | Supported | Supported |
| Vibrating alert | Supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | HTML, XHTML, HTML5 |
| Sensors | Accelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Barometer
| Accelerometer
Proximity sensor
Compass
Ambient Light sensor
Gyroscope
Face unlock
Fingerprint sensor (under display)
|
| Other features | - Colors: Black
- Amazon Fire OS 3.5 UI
- Corning Gorilla Glass 3 (front and back)
- 3D Dynamic Perspective UI (based on 4 front cameras)
- System wide tilt, auto-scroll, swivel and peek functions
- Dolby Digital Plus sound enhancement
- Unlimited Cloud Drive photo storage
- Firefly technology
- WiFi hotspot | - Colors: Black, Blue, Brown
- Funtouch 10.5
- 32-bit/192kHz audio
- WiFi direct, hotspot |
| Power supply | Amazon Fire Phone (32GB) | Vivo X50 Pro+ (256GB/8GB) |
| Battery | Li-Ion: Lithium-Ion (Non removable) | LiPo: Li-Ion polymer (Non removable) |
| Battery capacity | 2400 mAh | 4350 mAh |
| Charger, watts | Standard charging | 44W Fast battery charging |
| Talk time autonomy | 1320 minutes | 22 hours | 0.9 day | feature not registered |
| Standby | 17100 minutes | 285 hours | 11.9 days | feature not registered |
| Radiation rate | Amazon Fire Phone (32GB) | Vivo X50 Pro+ (256GB/8GB) |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |