LG Optimus 7 (E900) vs Acer Liquid Z4 (Z140)
Side by side comparison between LG Optimus 7 vs Acer Liquid Z4 phones, differences, pros, cons and full specifications. What's the better?
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What's the better phone? Acer Liquid Z4 (Z140)
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 
10 Advantages | 20 Common items in both devices |
| 512MB / 512MB LPDDR2 |
| TFT LCD |
| 16 million |
| 480x800 pixels |
| (back) 5MP |
| LED flash |
| Only digital zoom |
| +13 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 7 (E900) | Acer Liquid Z4 (Z140) | |
| Change model | ||
| Model | Optimus 7 (E900) | Liquid Z4 (Z140) |
| Other model names | LG E900 Optimus 7, LG Optimus 7 E900 | Acer Liquid Z140, Acer Liquid Z4 Single-Sim HM.HEQEE.008 |
| Country or region available | feature not registered |  (Global, International) |
| Brand | LG | Acer |
| Release date | 11/9/2010 | 4/1/2014 |
| Depth | 11.5 millimeters (0.45 inches) | 9.7 millimeters (0.38 inches) |
| Size (width x height) | 59.8 x 125 millimeters (2.35 x 4.92 in) | 64 x 124 millimeters (2.52 x 4.88 in) |
| Weight | 157 grams (5.5 ounces) | 122 grams (4.27 ounces) |
| Build, materials | feature not registered | feature not registered |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| LG Optimus 7 (E900) | Acer Liquid Z4 (Z140) | |
| Display type | TFT LCD | TFT LCD |
| Screen size | 3.8" inches | 4" inches |
| Screen-to-body ratio | ~55% (screen-to-body ratio) | ~57.4% (screen-to-body ratio) |
| Display resolution | 480x800 pixels | 480x800 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 246 PPI | 233 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass | Not supported |
| Refresh rate | feature not registered | feature not registered |
| Display features | feature not registered | feature not registered |
🤖 Operating System | ||
| LG Optimus 7 (E900) | Acer Liquid Z4 (Z140) | |
| System version | Windows Phone 7.0 | Android 4.2.2 Jelly Bean |
| Firmware update | Windows Phone 7.5 Refresh Tango | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| LG Optimus 7 (E900) | Acer Liquid Z4 (Z140) | |
| Chipset | 32bit: Qualcomm Snapdragon S1 QSD8650 | 32bit: MediaTek MT6572 (28nm) |
| CPU | Single-core, 1 processor: 1x 1GHz Scorpion (Single-core) | Dual-core, 1 processor: 2x 1.3GHz ARM Cortex-A7 (Dual-core) |
| GPU graphical controller | Qualcomm Adreno 200 | ARM Mali-400 MP1 |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| LG Optimus 7 (E900) | Acer Liquid Z4 (Z140) | |
| RAM memory | 512MB | 512MB LPDDR2 |
| Internal storage | 16GB | 4GB (2GB available) |
| External storage | Not supported | Until 32GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| LG Optimus 7 (E900) | Acer Liquid Z4 (Z140) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) Standard mini-SIM (2FF) | 1 slot (Single-SIM) micro-SIM (3FF) |
| Maximum Download / Upload | 7.2/5.76 Mbps | 21/5.76 Mbps |
| Network technology | 2G | 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 | Not supported | UMTS 900/2100 |
| Primary 4G network | Not supported | Not supported |
| Primary 5G network | Not supported | Not supported |
| Primary data network | CSD, GPRS, EDGE, UMTS, HSDPA, HSUPA | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ |
| Secondary 2G network | Not supported | Not supported |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | Not supported |
📷 Camera | ||
| LG Optimus 7 (E900) | Acer Liquid Z4 (Z140) | |
| Back camera (main camera) | 5 megapixels | 5 megapixels |
| Main camera resolution | 2560x1920 pixels | 2592x1944 pixels |
| Video recording (primary) | HD (1280x720) 24 fps | HD (1280x720) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | feature not registered | f/2.4 (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 |
| Autofocus | Autofocus | 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 | feature not registered | Face detection, Smile detection |
| BSI sensor | feature not registered | Not supported |
| HDR | feature not registered | HDR photo only main camera |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| LG Optimus 7 (E900) | Acer Liquid Z4 (Z140) | |
| Front camera (secondary) | Not supported | Not supported |
| Front camera resolution | Not supported | Not supported |
| Video recording (secondary) | Not supported | Not supported |
| 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 | ||
| LG Optimus 7 (E900) | Acer Liquid Z4 (Z140) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | feature not registered | 2 microphones or more |
| Radio | FM (RDS) | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4, WMV | MP4, H.264, H.263 |
| Audio formats | MP3, WAV, WMA, eAAC+ | MP3, WAV, WMA, eAAC+ |
🔌 Connectivity | ||
| LG Optimus 7 (E900) | Acer Liquid Z4 (Z140) | |
| USB | MicroUSB 2.0 | MicroUSB 2.0 |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 2.1 + A2DP | 3.0 + A2DP |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 b/g/n [wifi4] (2.4GHz) |
| DLNA | feature not registered | Not supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging |
| NFC | Not supported | Not supported |
| Infrared port | feature not registered | Not supported |
🧭 Sensors | ||
| LG Optimus 7 (E900) | Acer Liquid Z4 (Z140) | |
| Sensors | Accelerometer Ambient light sensor Compass Proximity sensor | Accelerometer Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| LG Optimus 7 (E900) | Acer Liquid Z4 (Z140) | |
| Battery type | Li-Ion: lithium-ion (Removable) | Li-Ion: lithium-ion (Removable) BAT-611 |
| Battery capacity | 1500 mAh | 1630 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | feature not registered | feature not registered |
| Talk time autonomy | 5 hours | 4 hours |
| Standby | 330 hours (13.8 days) | 250 hours (10.4 days) |
➕ Other features | ||
| LG Optimus 7 (E900) | Acer Liquid Z4 (Z140) | |
| Call control | 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 | Not supported | Not supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | feature not registered | HTML, XHTML |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Black • LG S-Class UI • DLNA • Bing Maps | • Colors: Black, White • WiFi hotspot |
☢️ Radiation rate | ||
| LG Optimus 7 (E900) | Acer Liquid Z4 (Z140) | |
| 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 |