Oppo Reno4 Z 5G vs Blu Star 4.5 (S450U)
Side by side comparison between Oppo Reno4 Z 5G vs Blu Star 4.5 phones, differences, pros, cons and full specifications. What's the better?
,
6.57"
IPS
IPS
1080x2400
48
MP
MP
16mp
8GB
RAM
RAM
Octa-core
4000
mAh
mAh
(Non removable)
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? Oppo Reno4 Z 5G
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!
25 Advantages 
4 Advantages | 19 Common items in both devices |
| LTPS IPS LCD / TFT IPS LCD |
| 16 million |
| LED flash |
| Only digital zoom |
| PDAF: phase detection autofocus / Autofocus |
| Capacitive |
| Multitouch |
| +12 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 | ||
| Oppo Reno4 Z 5G | Blu Star 4.5 (S450U) | |
| Change model | ||
| Model | Reno4 Z 5G | Star 4.5 (S450U) |
| Other model names | Oppo Reno 4 Z 5G CPH2065 | AT&T/Cricket/T-Mobile/MetroPCS Blu Star 4.5 |
| Country or region available |  (Global, International) |  USA |
| Brand | Oppo | Blu |
| Release date | 10/15/2020, Announced: 9/29/2020 | 10/1/2014 |
| Depth | 8.1 millimeters (0.32 inches) | 9.1 millimeters (0.36 inches) |
| Size (width x height) | 75.5 x 163.8 millimeters (2.97 x 6.45 in) | 64.3 x 127.7 millimeters (2.53 x 5.03 in) |
| Weight | 184 grams (6.44 ounces) | 133 grams (4.66 ounces) |
| Build, materials | Plastic body, glass front | feature not registered |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Oppo Reno4 Z 5G | Blu Star 4.5 (S450U) | |
| Display type | LTPS IPS LCD | TFT IPS LCD |
| Screen size | 6.57" inches | 4.5" inches |
| Screen-to-body ratio | ~84.3% (screen-to-body ratio) | ~70.2% (screen-to-body ratio) |
| Display resolution | 1080x2400 pixels (20:9) | 480x800 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 401 PPI | 207 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 3 | Not supported |
| Refresh rate | 120Hz | feature not registered |
| Display features | 480nits[typ] | feature not registered |
🤖 Operating System | ||
| Oppo Reno4 Z 5G | Blu Star 4.5 (S450U) | |
| System version | Android 10 | Android 4.4.2 KitKat |
| Firmware update | feature not registered | Android 5.0.2 Lollipop |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Oppo Reno4 Z 5G | Blu Star 4.5 (S450U) | |
| Chipset | 64bit: MediaTek Dimensity 800 MT6873V (7nm) | 32bit: MediaTek MT6582 |
| CPU | Octa-core, 2 processors: 4x 2GHz ARM Cortex-A76 (Quad-core) 4x 2GHz ARM Cortex-A55 (Quad-core) | Quad-core, 1 processor: 4x 1.3GHz ARM Cortex-A7 (Quad-core) |
| GPU graphical controller | ARM Mali-G57 MC4 | ARM Mali-400 |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Oppo Reno4 Z 5G | Blu Star 4.5 (S450U) | |
| RAM memory | 8GB LPDDR4X | 512MB LPDDR2 |
| Internal storage | 128GB (108GB available) UFS 2.1 | 4GB (2GB available) |
| External storage | Not supported | Until 32GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| Oppo Reno4 Z 5G | Blu Star 4.5 (S450U) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card | Dual-SIM Standby - Call active on one sim card (dedicated slot) |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) | 2 slots (Dual-SIM) micro-SIM (3FF) |
| Maximum Download / Upload | 3500/1920 Mbps | 21/5.76 Mbps |
| Network technology | 2G, 3G, 4G, 5G | 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 850/1700/1900 |
| Primary 4G network | LTE Cat6 (1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 66) TD-LTE (38, 39, 40, 41) VoLTE | Not supported |
| Primary 5G network | SA/NSA (1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 77, 78) | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA | 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 | ||
| Oppo Reno4 Z 5G | Blu Star 4.5 (S450U) | |
| Back camera (main camera) | (quad camera) 48 megapixels 8MP ultrawide f/2.2119°1/4.0"1.12µm 2MP depth f/2.4 2MP depth f/2.4 | 5 megapixels |
| Main camera resolution | 8000x6000 pixels | 2592x1944 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 30 fps | Full HD (1920x1080) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/1.7 (aperture) | feature not registered |
| Focal length | 26mm (lens) | feature not registered |
| Sensor size | 1/2" inches | feature not registered |
| Pixel size | 0.8µm pixel | feature not registered |
| Autofocus | PDAF: phase detection autofocus | Autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | 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 on both cameras | HDR photo only main camera |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Oppo Reno4 Z 5G | Blu Star 4.5 (S450U) | |
| Front camera (secondary) | (dual front camera) 16 megapixels 2MP depth f/2.4 | 0.3 megapixels |
| Front camera resolution | 4608x3456 pixels | 640x480 pixels |
| Video recording (secondary) | Full HD (1920x1080) | VGA (640x480) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.0 (aperture) | feature not registered |
| Focal length | 26mm (lens) | feature not registered |
| Sensor size | 1/3.06" inches | feature not registered |
| Pixel size | 1µm pixel | feature not registered |
🔉 Sound and multimedia | ||
| Oppo Reno4 Z 5G | Blu Star 4.5 (S450U) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | 2 microphones or more | Not supported |
| Radio | Not supported | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.264, H.263 |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, eAAC+, FLAC |
🔌 Connectivity | ||
| Oppo Reno4 Z 5G | Blu Star 4.5 (S450U) | |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | MicroUSB 2.0 |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | USB Type-C (reversible) | Not supported |
| Bluetooth | 5.1 + A2DP/LE | 4.0 + A2DP |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS | A-GPS, GeoTagging |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Oppo Reno4 Z 5G | Blu Star 4.5 (S450U) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (side-mounted) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Compass Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Oppo Reno4 Z 5G | Blu Star 4.5 (S450U) | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 4000 mAh | 1700 mAh |
| Charger, watts | 18W (9V/2A) Wired fast charging | Wired charging |
| Inductive / wireless charging | Not supported | feature not registered |
| Talk time autonomy | 26 hours (1.1 days) | feature not registered |
| Standby | 360 hours (15 days) | feature not registered |
➕ Other features | ||
| Oppo Reno4 Z 5G | Blu Star 4.5 (S450U) | |
| Call control | Voice dialing, Voice recorder, Voice commands | 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: Ink Black, Dew White • ColorOS 7.2 • 24-bit/192kHz audio • Case included | • Colors: Black, White, Blue, Pink • Screen protector included • Silicon Case included • BLU Infinite View technology |
☢️ Radiation rate | ||
| Oppo Reno4 Z 5G | Blu Star 4.5 (S450U) | |
| 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 |