Samsung Galaxy Z Flip 4 (SM-F721B 128GB) vs LG Optimus L4 II (Dual E445)
Side by side comparison between Samsung Galaxy Z Flip 4 vs LG Optimus L4 II phones, differences, pros, cons and full specifications. What's the better?
,
6.7"
AMOLED
AMOLED
1080x2640
12.2
MP
MP
10mp
8GB
RAM
RAM
Octa-core
3700
mAh
mAh
(Non removable)
vs
3.8"
IPS
IPS
320x480
3.1
MP
MP
512MB
RAM
RAM
Single-core
1700
mAh
mAh
(Removable)
What's the better phone? Samsung Galaxy Z Flip 4 (SM-F721B 128GB)
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!
29 Advantages 
5 Advantages | 11 Common items in both devices |
| 16 million |
| LED flash |
| Only digital zoom |
| Capacitive |
| Multitouch |
| Accelerometer |
| Compass |
| +4 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 | ||
| Galaxy Z Flip 4 (SM-F721B 128GB) | LG Optimus L4 II (Dual E445) | |
| Model | Galaxy Z Flip 4 (SM-F721B 128GB) | Optimus L4 II (Dual E445) |
| Other model names | Galaxy Z Flip4 5G (SM-F721B) | LG Optimus L4 2 Dual E445, LG E445 L4 Dual SIM, Dual Chip |
| Country or region available |  (Global, International) | feature not registered |
| Brand | Samsung | LG |
| Release date | 8/25/2022, Announced: 8/10/2022 | 7/1/2013 |
| Depth | 6.9 millimeters (0.27 inches) | 11.9 millimeters (0.47 inches) |
| Size (width x height) | 71.9 x 165.2 millimeters (2.83 x 6.5 in) | 64.7 x 112.8 millimeters (2.55 x 4.44 in) |
| Weight | 187 grams (6.55 ounces) | 125 grams (4.38 ounces) |
| Build, materials | Aluminum frame, flexible plastic screen, glass back Back: Gorilla Glass Victus+ Folded: 15.9 x 71.9 x 84.9 mm | feature not registered |
| Protection against water and others | IPX8 certified: water resistant up to 1.5 meters and 30min | Not supported |
📲 Display | ||
| Galaxy Z Flip 4 (SM-F721B 128GB) | LG Optimus L4 II (Dual E445) | |
| Display type | Dynamic AMOLED | TFT IPS LCD |
| Screen size | 6.7" inches | 3.8" inches |
| Screen-to-body ratio | ~85.4% (screen-to-body ratio) | ~58.9% (screen-to-body ratio) |
| Display resolution | 1080x2640 pixels | 320x480 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 426 PPI | 152 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | 120Hz | feature not registered |
| Display features | 1200nits[peak] HDR10+ Always-On Display Extra display: Super AMOLED 1.9" (260x512), Gorilla Glass Victus+ | feature not registered |
🤖 Operating System | ||
| Galaxy Z Flip 4 (SM-F721B 128GB) | LG Optimus L4 II (Dual E445) | |
| System version | Android 12 | Android 4.1.2 Jelly Bean |
| Firmware update | Android 14 | feature not registered |
| User Interface | One UI 4.1 / 5.1 / 6.0 | feature not registered |
⚙️ Processor | ||
| Galaxy Z Flip 4 (SM-F721B 128GB) | LG Optimus L4 II (Dual E445) | |
| Chipset | 64bit: Qualcomm Snapdragon 8+ Gen 1 (SM8475) (4nm) | 32bit: MediaTek MT6575 |
| CPU | 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) | Single-core, 1 processor: 1x 1GHz ARM Cortex-A9 (Single-core) |
| GPU graphical controller | Qualcomm Adreno 730 (818MHz) | PowerVR SGX531 |
| Performance (benchmark) | AnTuTu: 685765 (v8), 800001 (v9) Geekbench: 3913 (v5.1) GFXBench: 74fps (ES 3.1 onscreen) | feature not registered |
💽 Memory and storage | ||
| Galaxy Z Flip 4 (SM-F721B 128GB) | LG Optimus L4 II (Dual E445) | |
| RAM memory | 8GB LPDDR5 | 512MB LPDDR2 |
| Internal storage | 128GB (99GB available) UFS 3.1 | 4GB |
| External storage | Not supported | Until 32GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| Galaxy Z Flip 4 (SM-F721B 128GB) | LG Optimus L4 II (Dual E445) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card | Dual-SIM Standby - Call active on one sim card (dedicated slot) |
| SIM card | 1 slot (Single-SIM) nano-SIM (4FF) + e-SIM | 2 slots (Dual-SIM) Standard mini-SIM (2FF) |
| Maximum Download / Upload | 3000/1024 Mbps | 7.2/5.76 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 900/2100 |
| Primary 4G network | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 66) TD-LTE (38, 39, 40, 41) VoLTE | Not supported |
| Primary 5G network | SA/NSA/Sub6 (1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 77, 78) | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 | GPRS, EDGE, UMTS, HSDPA, HSUPA |
| Secondary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Secondary 3G network | UMTS 850/900/1700/1900/2100 | Not supported |
| Secondary 4G network | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 66) TD-LTE (38, 39, 40, 41) VoLTE | Not supported |
| Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 | GPRS, EDGE |
📷 Camera | ||
| Galaxy Z Flip 4 (SM-F721B 128GB) | LG Optimus L4 II (Dual E445) | |
| Back camera (main camera) | (dual camera) 12.2 megapixels 12MP ultrawide f/2.2123°1.12µm | 3.1 megapixels |
| Main camera resolution | 4032x3024 pixels | 2048x1536 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 60 fps | VGA (640x480) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/1.8 (aperture) | feature not registered |
| Focal length | 24mm lens | feature not registered |
| Sensor size | 1/1.76" inches | feature not registered |
| Pixel size | 1.8µm pixel | feature not registered |
| Autofocus | PDAF: phase detection autofocus | Not supported |
| Touch focus | Supported | Not supported |
| Image stabilization | OIS: Optical stabilization | feature not registered |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | feature not registered |
| BSI sensor | Supported | Not supported |
| HDR | HDR photo/video on both cameras | Not supported |
| Camera extras | 4K@30/60fps 1080p@30/60/240fps 720p@960fps HDR10+ Slow motion | feature not registered |
📸 Front camera | ||
| Galaxy Z Flip 4 (SM-F721B 128GB) | LG Optimus L4 II (Dual E445) | |
| Front camera (secondary) | 10 megapixels | Not supported |
| Front camera resolution | 3872x2592 pixels | Not supported |
| Video recording (secondary) | 4K UHD (3840x2160) | Not supported |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.4 (aperture) | feature not registered |
| Focal length | 26mm lens | feature not registered |
| Sensor size | 1/3" inches | feature not registered |
| Pixel size | 1.22µm pixel | feature not registered |
🔉 Sound and multimedia | ||
| Galaxy Z Flip 4 (SM-F721B 128GB) | LG Optimus L4 II (Dual E445) | |
| Loudspeaker | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG | 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, DivX, XviD, H.264, H.263, WMV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+ |
🔌 Connectivity | ||
| Galaxy Z Flip 4 (SM-F721B 128GB) | LG Optimus L4 II (Dual E445) | |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | MicroUSB 2.0 |
| Audio output | Type-C reversible connector | 3.5mm jack |
| TV output | USB Type-C (reversible) | Not supported |
| Bluetooth | 5.2 + A2DP/LE | 3.0 + A2DP |
| WiFi | 802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 b/g/n [wifi4] (2.4GHz) |
| DLNA | Supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou | A-GPS, GeoTagging |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy Z Flip 4 (SM-F721B 128GB) | LG Optimus L4 II (Dual E445) | |
| Sensors | Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (side-mounted) Gyroscope Hall effect Proximity sensor | Accelerometer Compass Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy Z Flip 4 (SM-F721B 128GB) | LG Optimus L4 II (Dual E445) | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 3700 mAh | 1700 mAh |
| Charger, watts | 25W Wired fast charging Reverse charging by cable USB Power Delivery 3.0 | Wired charging |
| Inductive / wireless charging | 15W Qi Wireless charging (Qi/WPC) 4.5W Reverse wireless charging | feature not registered |
| Talk time autonomy | 34 hours (1.4 days) | 10.5 hours |
| Standby | feature not registered | 652 hours (27.2 days) |
➕ Other features | ||
| Galaxy Z Flip 4 (SM-F721B 128GB) | LG Optimus L4 II (Dual E445) | |
| Call control | Voice dialing, Voice recorder, Voice commands | 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 | Not 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: Graphite, White, Bora Purple, Pink Gold, Blue, Yellow, Navy, Khaki, Red • Samsung Pay (Visa, MasterCard) | • Colors: Black, White • WiFi hotspot |
☢️ Radiation rate | ||
| Galaxy Z Flip 4 (SM-F721B 128GB) | LG Optimus L4 II (Dual E445) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 1.01W/kg (head), 1.01W/kg (body) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | 1.151W/kg (head), 1.198W/kg (body) | feature not registered |