LG Optimus U (US670) vs Huawei P Smart 2021 (L21B)
Side by side comparison between LG Optimus U vs Huawei P Smart (2021) phones, differences, pros, cons and full specifications. What's the better?
,
3.2"
TFT
TFT
320x480
3.1
MP
MP
512MB
RAM
RAM
Single-core
1500
mAh
mAh
(Removable)
vs
6.67"
IPS
IPS
1080x2400
48
MP
MP
8mp
4GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
What's the better phone? Huawei P Smart 2021 (L21B)
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!
2 Advantages 
27 Advantages | 11 Common items in both devices |
| 16 million |
| Only digital zoom |
| Autofocus / PDAF: phase detection autofocus |
| 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 | ||
| LG Optimus U (US670) | Huawei P Smart 2021 (L21B) | |
| Change model | ||
| Model | Optimus U (US670) | Huawei P Smart 2021 (L21B) |
| Other model names | US Cellular LG Optimus U US670, LG US670 | Huawei P Smart 2021 (PPA-L21B, Peppa-L21B, LX1) Dual-SIM NFC |
| Country or region available |  USA |   (United Kingdom), Russia |
| Brand | LG | Huawei |
| Release date | 12/1/2010 | 9/28/2020 |
| Depth | 13.2 millimeters (0.52 inches) | 9.26 millimeters (0.36 inches) |
| Size (width x height) | 58.9 x 113.5 millimeters (2.32 x 4.47 in) | 76.88 x 165.65 millimeters (3.03 x 6.52 in) |
| Weight | 130 grams (4.55 ounces) | 206 grams (7.21 ounces) |
| Build, materials | feature not registered | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| LG Optimus U (US670) | Huawei P Smart 2021 (L21B) | |
| Display type | TFT LCD | TFT IPS LCD |
| Screen size | 3.2" inches | 6.67" inches |
| Screen-to-body ratio | ~45.6% (screen-to-body ratio) | ~84.3% (screen-to-body ratio) |
| Display resolution | 320x480 pixels | 1080x2400 pixels (20:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 180 PPI | 395 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | feature not registered | 60Hz |
| Display features | feature not registered | Not supported |
🤖 Operating System | ||
| LG Optimus U (US670) | Huawei P Smart 2021 (L21B) | |
| System version | Android 2.2.2 Froyo | Android 10 |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | EMUI 10.1 |
⚙️ Processor | ||
| LG Optimus U (US670) | Huawei P Smart 2021 (L21B) | |
| Chipset | 32bit: Qualcomm Snapdragon S1 MSM7627 | 64bit: HiSilicon Kirin 710A (14nm) |
| CPU | Single-core, 1 processor: 1x 600MHz ARM1136EJ-S (Single-core) | Octa-core, 2 processors: 4x 2GHz ARM Cortex-A73 (Quad-core) 4x 1.7GHz ARM Cortex-A53 (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 200 | ARM Mali-G51 MP4 |
| Performance (benchmark) | feature not registered | AnTuTu: 169253 (v8) Geekbench: 1334 (v5.1) GFXBench: 7fps (ES 3.1 onscreen) |
💽 Memory and storage | ||
| LG Optimus U (US670) | Huawei P Smart 2021 (L21B) | |
| RAM memory | 512MB | 4GB LPDDR4 |
| Internal storage | 512MB (140MB available) | 128GB (110GB available) eMMC 5.1 |
| External storage | Until 32GB microSD, microSDHC (dedicated slot) | Until 512GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| LG Optimus U (US670) | Huawei P Smart 2021 (L21B) | |
| Dual-SIM | Not supported | Dual-SIM Standby - Call active on one sim card (dedicated slot) |
| SIM card | Not supported | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 0.153 Mbps | 400/50 Mbps |
| Network technology | 2G, 3G | 2G, 3G, 4G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Not supported | Quad-Band 850/900/1800/1900 |
| Primary 2G network | CDMA 800/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | CDMA2000 1xEV-DO | UMTS 850/900/1900/2100 |
| Primary 4G network | Not supported | LTE Cat6 (1, 3, 5, 7, 8, 20, 28) TD-LTE (38) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | CDMA2000 EV-DO Rev A | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
| Secondary 2G network | Not supported | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | UMTS 850/900/1900/2100 |
| Secondary 4G network | Not supported | LTE Cat6 (1, 3, 5, 7, 8, 20, 28) TD-LTE (38) |
| Secondary data network | Not supported | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
📷 Camera | ||
| LG Optimus U (US670) | Huawei P Smart 2021 (L21B) | |
| Back camera (main camera) | 3.1 megapixels | (quad camera) 48 megapixels 8MP ultrawide f/2.4120°1/4"1.12µm 2MP macro f/2.4 2MP depth f/2.4 |
| Main camera resolution | 2048x1536 pixels | 8000x6000 pixels |
| Video recording (primary) | VGA (640x480) 15 fps | Full HD (1920x1080) 60 fps |
| Flash | Not supported | LED flash |
| Focal aperture | feature not registered | f/1.8 (aperture) |
| Focal length | feature not registered | 26mm lens |
| Sensor size | feature not registered | 1/2" inches |
| Pixel size | feature not registered | 0.8µm pixel |
| Autofocus | Autofocus | PDAF: phase detection autofocus |
| Touch focus | feature not registered | Supported |
| Image stabilization | feature not registered | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection | Face detection, Smile detection |
| BSI sensor | feature not registered | Not supported |
| HDR | feature not registered | HDR photo on both cameras |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| LG Optimus U (US670) | Huawei P Smart 2021 (L21B) | |
| Front camera (secondary) | Not supported | 8 megapixels |
| Front camera resolution | Not supported | 3264x2448 pixels |
| Video recording (secondary) | Not supported | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | f/2.0 (aperture) |
| 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 | ||
| LG Optimus U (US670) | Huawei P Smart 2021 (L21B) | |
| Loudspeaker | Supported | Mono sound (not stereo) |
| Active noise cancellation | feature not registered | 2 microphones or more |
| Radio | Not supported | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, DivX, XviD, H.263, H.264, WMV | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+ | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| LG Optimus U (US670) | Huawei P Smart 2021 (L21B) | |
| USB | MicroUSB 2.0 | USB 2.0 Type-C, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | USB Type-C (reversible) |
| Bluetooth | 2.1 + A2DP | 5.1 + A2DP/LE |
| WiFi | 802.11 b/g [wifi3] (2.4GHz) | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot |
| DLNA | feature not registered | Not supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging, GLONASS, BeiDou |
| NFC | Not supported | Supported |
| Infrared port | feature not registered | Not supported |
🧭 Sensors | ||
| LG Optimus U (US670) | Huawei P Smart 2021 (L21B) | |
| Sensors | Accelerometer Compass Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (side-mounted) Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| LG Optimus U (US670) | Huawei P Smart 2021 (L21B) | |
| Battery type | Li-Ion: lithium-ion (Removable) LGIP-400N | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 1500 mAh | 5000 mAh |
| Charger, watts | Wired charging | 22.5W Wired fast charging |
| Inductive / wireless charging | feature not registered | Not supported |
| Talk time autonomy | 5 hours | 38 hours (1.6 days) |
| Standby | 200 hours (8.3 days) | feature not registered |
➕ Other features | ||
| LG Optimus U (US670) | Huawei P Smart 2021 (L21B) | |
| Call control | Voice dialing, Voice recorder, Voice commands | 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 | Not supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Blue • 2GB microSD included • LG 3Way Sync • HAC (M4/T4) • WiFi hotspot • Java framework | • Colors: Midnight Black, Crush Green, Blush Gold • Protective film included • Protective cover included |
☢️ Radiation rate | ||
| LG Optimus U (US670) | Huawei P Smart 2021 (L21B) | |
| 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 |