Positivo X400 vs Blu Star 4.5 (S450i)
Side by side comparison between Positivo X400 vs Blu Star 4.5 phones, differences, pros, cons and full specifications. What's the better?
,
vs
4.5"
IPS
IPS
480x800
5
MP
MP
0.3mp
512MB
RAM
RAM
Quad-core
1700
mAh
mAh
(Removable)
What's the better phone? Blu Star 4.5 (S450i)
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!
 5 Advantages Positivo X400 | vs |  6 Advantages Blu Star 4.5 (S450i) |
| +480x854 pixels7% Higher resolution screen | vs | 480x800 pixels |
| +5"11% Larger screen | vs | 4.5" |
| +(front) 5MP15 times Higher resolution secondary camera to take pictures and selfies | vs | (front) 0.3MP |
| +(front) HD (1280x720)2 times More image quality for recording videos with the secondary camera | vs | (front) VGA (640x480) |
| +2000 mAh18% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use | vs | 1700 mAh |
| 160 grams (5.6 ounces) | vs | +133 grams (4.66 ounces)20% Lighter |
| 9.6 millimeters (0.38 inches) | vs | +9.1 millimeters (0.36 inches)5% Thinner |
| 196 PPI | vs | +207 PPI6% Crisper display of text, images and videos because it has more pixels per inch (ppi) |
| HD (1280x720) | vs | +Full HD (1920x1080)125% More image quality for recording videos with the primary camera |
| (3G+ HSPA+) 14.4 Mbps | vs | +(3G+ HSPA+) 21 Mbps46% Faster for surfing the internet and download files |
| Not supported | vs | +CompassAdvantage Sensors help you use the device |
| 30 Common items in both devices |
| 1.3GHz 32bit Quad-core |
| 512MB / 512MB LPDDR2 |
| 4GB (2GB available) |
| Until 32GB microSD, microSDHC |
| TFT IPS LCD |
| 16 million |
| (back) 5MP |
| +23 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 | ||
| Positivo X400 | Blu Star 4.5 (S450i) | |
| Change model | ||
| Model | Positivo X400 | Star 4.5 (S450i) |
| Other model names | Positivo X400 Dual Chip for Brazil | Blu Star 4.5 Dual Chip S450i, Blu S450i |
| Country or region available |  Brazil |  (Global, International) |
| Brand | Positivo | Blu |
| Release date | 2/1/2015 | 10/1/2014 |
| Depth | 9.6 millimeters (0.38 inches) | 9.1 millimeters (0.36 inches) |
| Size (width x height) | 73.2 x 143 millimeters (2.88 x 5.63 in) | 64.3 x 127.7 millimeters (2.53 x 5.03 in) |
| Weight | 160 grams (5.6 ounces) | 133 grams (4.66 ounces) |
| Build, materials | feature not registered | feature not registered |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Positivo X400 | Blu Star 4.5 (S450i) | |
| Display type | TFT IPS LCD | TFT IPS LCD |
| Screen size | 5" inches | 4.5" inches |
| Screen-to-body ratio | ~65.8% (screen-to-body ratio) | ~70.2% (screen-to-body ratio) |
| Display resolution | 480x854 pixels | 480x800 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 196 PPI | 207 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | feature not registered | feature not registered |
| Display features | feature not registered | feature not registered |
🤖 Operating System | ||
| Positivo X400 | Blu Star 4.5 (S450i) | |
| System version | Android 4.4.2 KitKat | Android 4.4.2 KitKat |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Positivo X400 | Blu Star 4.5 (S450i) | |
| Chipset | 32bit | 32bit: MediaTek MT6582 |
| CPU | Quad-core, 1 processor: 4x 1.3GHz | Quad-core, 1 processor: 4x 1.3GHz ARM Cortex-A7 (Quad-core) |
| GPU graphical controller | feature not registered | ARM Mali-400 |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Positivo X400 | Blu Star 4.5 (S450i) | |
| RAM memory | 512MB | 512MB LPDDR2 |
| Internal storage | 4GB (2GB available) | 4GB (2GB available) |
| External storage | Until 32GB microSD, microSDHC (dedicated slot) | Until 32GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| Positivo X400 | Blu Star 4.5 (S450i) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) | Dual-SIM Standby - Call active on one sim card (dedicated slot) |
| SIM card | 2 slots (Dual-SIM) Standard mini-SIM (2FF) | 2 slots (Dual-SIM) micro-SIM (3FF) |
| Maximum Download / Upload | 14.4/5.76 Mbps | 21/5.76 Mbps |
| Network technology | 2G, 3G | 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 850/2100 | UMTS 850/2100 |
| Primary 4G network | Not supported | Not supported |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ |
| Secondary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | GPRS, EDGE | GPRS, EDGE |
📷 Camera | ||
| Positivo X400 | Blu Star 4.5 (S450i) | |
| Back camera (main camera) | 5 megapixels | 5 megapixels |
| Main camera resolution | 2592x1944 pixels | 2592x1944 pixels |
| Video recording (primary) | HD (1280x720) 30 fps | Full HD (1920x1080) 30 fps |
| Flash | LED flash | LED flash |
| 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 |
| Autofocus | Autofocus | Autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | feature not registered | feature not registered |
| 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 | HDR photo only main camera |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Positivo X400 | Blu Star 4.5 (S450i) | |
| Front camera (secondary) | 5 megapixels | 0.3 megapixels |
| Front camera resolution | 2592x1944 pixels | 640x480 pixels |
| Video recording (secondary) | HD (1280x720) | 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 | ||
| Positivo X400 | Blu Star 4.5 (S450i) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | Not supported | Not supported |
| Radio | FM | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263 | MP4, H.264, H.263 |
| Audio formats | MP3, WAV, eAAC+ | MP3, WAV, eAAC+, FLAC |
🔌 Connectivity | ||
| Positivo X400 | Blu Star 4.5 (S450i) | |
| USB | MicroUSB 2.0 | MicroUSB 2.0 |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 4.0 + A2DP | 4.0 + A2DP |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging |
| NFC | Not supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Positivo X400 | Blu Star 4.5 (S450i) | |
| Sensors | Accelerometer Ambient light sensor Proximity sensor | Accelerometer Ambient light sensor Compass Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Positivo X400 | Blu Star 4.5 (S450i) | |
| Battery type | Li-Ion: lithium-ion (Removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 2000 mAh | 1700 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | feature not registered | feature not registered |
| Talk time autonomy | feature not registered | 9 hours |
| Standby | feature not registered | 400 hours (16.7 days) |
➕ Other features | ||
| Positivo X400 | Blu Star 4.5 (S450i) | |
| Call control | Voice dialing, Voice recorder | Voice dialing, Voice recorder |
| 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, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Black • Positivo World • WiFi hotspot | • Colors: Black, White, Blue, Pink • Screen protector included • Silicon Case included • BLU Infinite View technology |
☢️ Radiation rate | ||
| Positivo X400 | Blu Star 4.5 (S450i) | |
| 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 |