Blu Studio Energy 2 (S0090UU) vs Samsung Galaxy Z Flip 4 (SM-F721U 256GB)
Side by side comparison between Blu Studio Energy 2 vs Samsung Galaxy Z Flip 4 phones, differences, pros, cons and full specifications. What's the better?
,
5"
AMOLED
AMOLED
720x1280
8
MP
MP
5mp
1.5GB
RAM
RAM
Quad-core
5000
mAh
mAh
(Removable)
vs
6.7"
AMOLED
AMOLED
1080x2640
12.2
MP
MP
10mp
8GB
RAM
RAM
Octa-core
3700
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy Z Flip 4 (SM-F721U 256GB)
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!
6 Advantages 
26 Advantages | 14 Common items in both devices |
| Super AMOLED / Dynamic AMOLED |
| 16 million |
| LED flash |
| Only digital zoom |
| Autofocus / PDAF: phase detection autofocus |
| Capacitive |
| Multitouch |
| +7 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 | ||
| Blu Studio Energy 2 (S0090UU) | Galaxy Z Flip 4 (SM-F721U 256GB) | |
| Change model | ||
| Model | Studio Energy 2 (S0090UU) | Galaxy Z Flip 4 (SM-F721U 256GB) |
| Other model names | BLU Studio Energy 2 LTE for AT&T,T-Mobile, Cricket, MetroPCS | Galaxy Z Flip4 5G (SM-F721U1) |
| Country or region available |  USA | USA |
| Brand | Blu | Samsung |
| Release date | 9/1/2015 | 8/25/2022, Announced: 8/10/2022 |
| Depth | 10.2 millimeters (0.4 inches) | 6.9 millimeters (0.27 inches) |
| Size (width x height) | 71.2 x 144.7 millimeters (2.8 x 5.7 in) | 71.9 x 165.2 millimeters (2.83 x 6.5 in) |
| Weight | 176 grams (6.16 ounces) | 187 grams (6.55 ounces) |
| Build, materials | feature not registered | Aluminum frame, flexible plastic screen, glass back Back: Gorilla Glass Victus+ Folded: 15.9 x 71.9 x 84.9 mm |
| Protection against water and others | Not supported | IPX8 certified: water resistant up to 1.5 meters and 30min |
📲 Display | ||
| Blu Studio Energy 2 (S0090UU) | Galaxy Z Flip 4 (SM-F721U 256GB) | |
| Display type | Super AMOLED | Dynamic AMOLED |
| Screen size | 5" inches | 6.7" inches |
| Screen-to-body ratio | ~66.9% (screen-to-body ratio) | ~85.4% (screen-to-body ratio) |
| Display resolution | 720x1280 pixels | 1080x2640 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 294 PPI | 426 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | feature not registered | 120Hz |
| Display features | feature not registered | 1200nits[peak] HDR10+ Always-On Display Extra display: Super AMOLED 1.9" (260x512), Gorilla Glass Victus+ |
🤖 Operating System | ||
| Blu Studio Energy 2 (S0090UU) | Galaxy Z Flip 4 (SM-F721U 256GB) | |
| System version | Android 5.0.2 Lollipop | Android 12 |
| Firmware update | feature not registered | Android 14 |
| User Interface | feature not registered | One UI 4.1 / 5.1 / 6.0 |
⚙️ Processor | ||
| Blu Studio Energy 2 (S0090UU) | Galaxy Z Flip 4 (SM-F721U 256GB) | |
| Chipset | 64bit: MediaTek MT6735 | 64bit: Qualcomm Snapdragon 8+ Gen 1 (SM8475) (4nm) |
| CPU | Quad-core, 1 processor: 4x 1.3GHz ARM Cortex-A53 (Quad-core) | Octa-core, 3 processors: 1x 3.19GHz ARM Cortex-X2 (Single-core) 3x 2.75GHz ARM Cortex-A710 (Triple-core) 4x 2GHz ARM Cortex-A510 (Quad-core) |
| GPU graphical controller | ARM Mali-T720 | Qualcomm Adreno 730 (818MHz) |
| Performance (benchmark) | feature not registered | AnTuTu: 685765 (v8), 800001 (v9) Geekbench: 3913 (v5.1) GFXBench: 74fps (ES 3.1 onscreen) |
💽 Memory and storage | ||
| Blu Studio Energy 2 (S0090UU) | Galaxy Z Flip 4 (SM-F721U 256GB) | |
| RAM memory | 1.5GB LPDDR3 | 8GB LPDDR5 |
| Internal storage | 16GB (12GB available) | 256GB (218GB available) UFS 3.1 |
| External storage | Until 64GB microSD, microSDXC (dedicated slot) | Not supported |
📶 Mobile networks | ||
| Blu Studio Energy 2 (S0090UU) | Galaxy Z Flip 4 (SM-F721U 256GB) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) | Dual-SIM Standby - Call active on one sim card |
| SIM card | 2 slots (Dual-SIM) micro-SIM (3FF) | 1 slot (Single-SIM) nano-SIM (4FF) + e-SIM |
| Maximum Download / Upload | 150/50 Mbps | 5000/1024 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G, 4G, 5G |
| 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 | CDMA 800/1900, GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/1700/1900/2100 | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat4 700/1700/1900/2600 (Bands2,4,7,17) | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71) TD-LTE (38, 39, 40, 41, 46, 48) VoLTE |
| Primary 5G network | Not supported | SA/NSA/Sub6 (2, 5, 25, 41, 66, 71) mmWave (260, 261) |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6, mmWave |
| Secondary 2G network | GSM 850/900/1800/1900 | CDMA 800/1900, GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 |
| Secondary 4G network | Not supported | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71) TD-LTE (38, 39, 40, 41, 46, 48) VoLTE |
| Secondary data network | GPRS, EDGE | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6, mmWave |
📷 Camera | ||
| Blu Studio Energy 2 (S0090UU) | Galaxy Z Flip 4 (SM-F721U 256GB) | |
| Back camera (main camera) | 8 megapixels | (dual camera) 12.2 megapixels 12MP ultrawide f/2.2123°1.12µm |
| Main camera resolution | 3264x2448 pixels | 4032x3024 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | 4K UHD (3840x2160) 60 fps |
| Flash | LED flash | LED flash |
| Focal aperture | feature not registered | f/1.8 (aperture) |
| Focal length | feature not registered | 24mm lens |
| Sensor size | feature not registered | 1/1.76" inches |
| Pixel size | feature not registered | 1.8µm pixel |
| Autofocus | Autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | feature not registered | OIS: Optical stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Not supported | Supported |
| HDR | HDR photo only main camera | HDR photo/video on both cameras |
| Camera extras | feature not registered | 4K@30/60fps 1080p@30/60/240fps 720p@960fps HDR10+ Slow motion |
📸 Front camera | ||
| Blu Studio Energy 2 (S0090UU) | Galaxy Z Flip 4 (SM-F721U 256GB) | |
| Front camera (secondary) | 5 megapixels | 10 megapixels |
| Front camera resolution | 2592x1944 pixels | 3872x2592 pixels |
| Video recording (secondary) | HD (1280x720) | 4K UHD (3840x2160) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | f/2.4 (aperture) |
| Focal length | feature not registered | 26mm lens |
| Sensor size | feature not registered | 1/3" inches |
| Pixel size | feature not registered | 1.22µm pixel |
🔉 Sound and multimedia | ||
| Blu Studio Energy 2 (S0090UU) | Galaxy Z Flip 4 (SM-F721U 256GB) | |
| Loudspeaker | Supported | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG |
| Active noise cancellation | Not supported | 2 microphones or more |
| Radio | FM | 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 | ||
| Blu Studio Energy 2 (S0090UU) | Galaxy Z Flip 4 (SM-F721U 256GB) | |
| USB | MicroUSB 2.0 | USB 2.0 Type-C, USB OTG On-The-Go |
| Audio output | 3.5mm jack | Type-C reversible connector |
| TV output | Not supported | USB Type-C (reversible) |
| Bluetooth | 4.0 + A2DP | 5.2 + A2DP/LE |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot | 802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Not supported | Supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Not supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Blu Studio Energy 2 (S0090UU) | Galaxy Z Flip 4 (SM-F721U 256GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Proximity sensor | Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (side-mounted) Gyroscope Hall effect Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Blu Studio Energy 2 (S0090UU) | Galaxy Z Flip 4 (SM-F721U 256GB) | |
| Battery type | Li-Ion: lithium-ion (Removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 5000 mAh | 3700 mAh |
| Charger, watts | Wired charging | 25W Wired fast charging Reverse charging by cable USB Power Delivery 3.0 |
| Inductive / wireless charging | feature not registered | 15W Qi Wireless charging (Qi/WPC) 4.5W Reverse wireless charging |
| Talk time autonomy | 33 hours (1.4 days) | 34 hours (1.4 days) |
| Standby | 1080 hours (45 days) | feature not registered |
➕ Other features | ||
| Blu Studio Energy 2 (S0090UU) | Galaxy Z Flip 4 (SM-F721U 256GB) | |
| Call control | Voice dialing, 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, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Gray, White • USB OTG On-The-Go • Aluminum body • Screen protector included • Silicon Case included • BLU Infinite View technology • Quick Charger | • Colors: Graphite, White, Bora Purple, Pink Gold, Blue, Yellow, Navy, Khaki, Red • Samsung Pay (Visa, MasterCard) |
☢️ Radiation rate | ||
| Blu Studio Energy 2 (S0090UU) | Galaxy Z Flip 4 (SM-F721U 256GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 1.02W/kg (head), 0.94W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |