Amazon Fire Phone (64GB) vs Sony Xperia U (ST25i)
Side by side comparison between Amazon Fire Phone vs Sony Xperia U phones, differences, pros, cons and full specifications. What's the better?
,
4.7"
IPS
IPS
720x1280
13
MP
MP
2.1mp
2GB
RAM
RAM
Quad-core
2400
mAh
mAh
(Non removable)
vs
3.5"
LED
LED
480x854
5
MP
MP
0.3mp
512MB
RAM
RAM
Dual-core
1320
mAh
mAh
(Removable)
What's the better phone? Amazon Fire Phone (64GB)
The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!
24 Advantages 
4 Advantages | 16 Common items in both devices |
| Plastic body, glass front/back / Plastic body, glass front |
| 60Hz |
| 16 million |
| LED flash |
| Only digital zoom |
| Autofocus |
| Capacitive |
| +9 specs and more in the table below |
Check the comparison table below for more items that are not evaluated in comparison score above.
Highlight differences Clear highlight📱 Model features | ||
| Amazon Fire Phone (64GB) | Sony Xperia U (ST25i) | |
| Model | Fire Phone (64GB) | Xperia U (ST25i) |
| Other model names | AT&T Amazon Firephone SD4930UR | Sony Xperia U ST25, Sony Kumquat |
| Country or region available |  USA |  (Global, International) |
| Brand | Amazon | Sony |
| Release date | 7/25/2014, Announced: 6/18/2014 | 5/7/2012, Announced: 2/1/2012 |
| Depth | 8.9 millimeters (0.35 inches) | 12 millimeters (0.47 inches) |
| Size (width x height) | 66.5 x 139.2 millimeters (2.62 x 5.48 in) | 54 x 112 millimeters (2.13 x 4.41 in) |
| Weight | 160 grams (5.6 ounces) | 110 grams (3.85 ounces) |
| Build, materials | Plastic body, glass front/back Back: Gorilla Glass 3 | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Amazon Fire Phone (64GB) | Sony Xperia U (ST25i) | |
| Display type | TFT IPS LCD | TFT LED-Backlit LCD |
| Screen size | 4.7" inches | 3.5" inches |
| Screen-to-body ratio | ~65.8% (screen-to-body ratio) | ~55.8% (screen-to-body ratio) |
| Display resolution | 720x1280 pixels (16:9) | 480x854 pixels (16:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch 4-points |
| Pixel density (dot pitch) | 312 PPI | 280 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 3 | Scratch-resistant glass |
| Refresh rate | 60Hz | 60Hz |
| Display features | Not supported | Not supported |
🤖 Operating System | ||
| Amazon Fire Phone (64GB) | Sony Xperia U (ST25i) | |
| System version | Android 4.2.2 Jelly Bean | Android 2.3.7 Gingerbread |
| Firmware update | feature not registered | Android 4.0.4 Ice Cream Sandwich ICS |
| User Interface | Amazon Fire OS UI 3.5 / 3.6.5 | feature not registered |
⚙️ Processor | ||
| Amazon Fire Phone (64GB) | Sony Xperia U (ST25i) | |
| Chipset | 32bit: Qualcomm Snapdragon 800 MSM8974 (28nm) | 32bit: ST-Ericsson NovaThor U8500 (45nm) |
| CPU | Quad-core, 1 processor: 4x 2.2GHz Krait 400 (Quad-core) | Dual-core, 1 processor: 2x 1GHz ARM Cortex-A9 (Dual-core) |
| GPU graphical controller | Qualcomm Adreno 330 | ARM Mali-400 MP1 |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Amazon Fire Phone (64GB) | Sony Xperia U (ST25i) | |
| RAM memory | 2GB LPDDR3 | 512MB LPDDR2 |
| Internal storage | 64GB (57GB available) eMMC 4.5 | 8GB (4GB available) |
| External storage | Not supported | Not supported |
📶 Mobile networks | ||
| Amazon Fire Phone (64GB) | Sony Xperia U (ST25i) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) nano-SIM (4FF) | 1 slot (Single-SIM) Standard mini-SIM (2FF) |
| Maximum Download / Upload | 100/50 Mbps | 14.4/5.76 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Quad-Band 850/900/1800/1900 |
| Primary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/900/1700/1900/2100 | UMTS 900/2100 |
| Primary 4G network | LTE Cat3 (1, 2, 3, 4, 5, 7, 8, 17, 20) | Not supported |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, UMTS, HSDPA, HSUPA |
| Secondary 2G network | Not supported | Not supported |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | Not supported |
📷 Camera | ||
| Amazon Fire Phone (64GB) | Sony Xperia U (ST25i) | |
| Back camera (main camera) | 13 megapixels | 5 megapixels |
| Main camera resolution | 4128x3096 pixels | 2592x1944 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | HD (1280x720) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/2.0 (aperture) | 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 |
| Autofocus | Autofocus | Autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | OIS: Optical stabilization | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Not supported | Not supported |
| HDR | HDR photo only main camera | Not supported |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Amazon Fire Phone (64GB) | Sony Xperia U (ST25i) | |
| Front camera (secondary) | 2.1 megapixels | 0.3 megapixels |
| Front camera resolution | 1920x1080 pixels | 640x480 pixels |
| Video recording (secondary) | Full HD (1920x1080) | VGA (640x480) |
| 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 |
🔉 Sound and multimedia | ||
| Amazon Fire Phone (64GB) | Sony Xperia U (ST25i) | |
| Loudspeaker | Stereo sound Dolby Digital Plus | Supported |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | Not supported | FM (RDS) |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263 | MP4, H.263, H.264, WMV |
| Audio formats | MP3, WAV, eAAC+ | MP3, eAAC+, WMA, WAV |
🔌 Connectivity | ||
| Amazon Fire Phone (64GB) | Sony Xperia U (ST25i) | |
| USB | MicroUSB 2.0 | MicroUSB 2.0, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 3.0 + A2DP | 2.1 + A2DP |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) WiFi hotspot | 802.11 b/g/n [wifi4] (2.4GHz) |
| DLNA | Not supported | Supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Amazon Fire Phone (64GB) | Sony Xperia U (ST25i) | |
| Sensors | Accelerometer Ambient light sensor Barometer Compass Gyroscope Proximity sensor | Accelerometer Ambient light sensor Compass Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Amazon Fire Phone (64GB) | Sony Xperia U (ST25i) | |
| Battery type | Li-Ion: lithium-ion (Non removable) | Li-Ion: lithium-ion (Removable) BA600 |
| Battery capacity | 2400 mAh | 1320 mAh |
| Charger, watts | 9W Wired charging | Wired charging |
| Inductive / wireless charging | Not supported | Not supported |
| Talk time autonomy | 22 hours | 5.6 hours |
| Standby | 285 hours (11.9 days) | 472 hours (19.7 days) |
➕ Other features | ||
| Amazon Fire Phone (64GB) | Sony Xperia U (ST25i) | |
| Call control | Voice recorder | Voice dialing, Voice recorder, Voice commands |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | HTML, XHTML, Flash player |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Black • 3D Dynamic Perspective UI (based on 4 front cameras) • System wide tilt, auto-scroll, swivel and peek functions • Unlimited Cloud Drive photo storage | • Colors: Black, White • Exchangeable bottom caps: White, Black, Pink, Yellow • Sony Reality Display • Sony Mobile BRAVIA Engine • xLoud • 3D surround sound • WiFi hotspot • Java framework |
☢️ Radiation rate | ||
| Amazon Fire Phone (64GB) | Sony Xperia U (ST25i) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 1.34W/kg (body) | 1.09W/kg (head), 0.93W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 1.62W/kg (head) |