Samsung Galaxy Attain 4G (SCH-R920) vs Asus Zenfone 5Z (ZS621KL 128GB)
Side by side comparison between Samsung Galaxy Attain 4G vs Asus Zenfone 5Z phones, differences, pros, cons and full specifications. What's the better?
,
3.5"
TFT
TFT
320x480
3.1
MP
MP
1.3mp
512MB
RAM
RAM
Single-core
1650
mAh
mAh
(Removable)
vs
6.2"
IPS
IPS
1080x2246
12
MP
MP
8mp
6GB
RAM
RAM
Octa-core
3300
mAh
mAh
(Non removable)
What's the better phone? Asus Zenfone 5Z (ZS621KL 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!
2 Advantages 
28 Advantages | 15 Common items in both devices |
| Only digital zoom |
| Autofocus / PDAF: phase detection autofocus |
| 4G LTE / 4G LTE-A |
| Capacitive |
| Multitouch |
| Accelerometer |
| Ambient light sensor |
| +8 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 Attain 4G (SCH-R920) | Asus Zenfone 5Z (ZS621KL 128GB) | |
| Change model | ||
| Model | Galaxy Attain 4G (SCH-R920) | Zenfone 5Z (ZS621KL 128GB) |
| Other model names | MetroPCS Samsung Galaxy Attain 4G R920, Samsung SCH-R920 | Asus Zenfone 5z 6GB RAM (ZS621KL), ASUS_Z01RD |
| Country or region available |  USA |  India |
| Brand | Samsung | Asus |
| Release date | 2/6/2012 | 6/1/2018 |
| Depth | 11.7 millimeters (0.46 inches) | 7.9 millimeters (0.31 inches) |
| Size (width x height) | 60.5 x 116 millimeters (2.38 x 4.57 in) | 75.65 x 153 millimeters (2.98 x 6.02 in) |
| Weight | 119 grams (4.17 ounces) | 165 grams (5.78 ounces) |
| Build, materials | feature not registered | Aluminum frame, glass front/back |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Galaxy Attain 4G (SCH-R920) | Asus Zenfone 5Z (ZS621KL 128GB) | |
| Display type | TFT LCD | TFT IPS LCD |
| Screen size | 3.5" inches | 6.2" inches |
| Screen-to-body ratio | ~52% (screen-to-body ratio) | ~83.7% (screen-to-body ratio) |
| Display resolution | 320x480 pixels | 1080x2246 pixels (18.7:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 165 PPI | 402 PPI |
| Colors | 260 thousand | 16 million |
| Scratch-resistant glass | Not supported | Gorilla Glass |
| Refresh rate | feature not registered | 60Hz |
| Display features | feature not registered | 550nits[typ] |
🤖 Operating System | ||
| Galaxy Attain 4G (SCH-R920) | Asus Zenfone 5Z (ZS621KL 128GB) | |
| System version | Android 2.3.6 Gingerbread | Android 8.0 Oreo |
| Firmware update | feature not registered | Android 10 |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Galaxy Attain 4G (SCH-R920) | Asus Zenfone 5Z (ZS621KL 128GB) | |
| Chipset | 32bit: Qualcomm Snapdragon MSM8655T | 64bit: Qualcomm Snapdragon 845 MSM8998 (10nm) |
| CPU | Single-core, 1 processor: 1x 1GHz Scorpion (Single-core) | Octa-core, 2 processors: 4x 2.7GHz Kryo 385 Gold (Quad-core) 4x 1.7GHz Kryo 385 Silver (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 205 | Qualcomm Adreno 630 710Mhz |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Galaxy Attain 4G (SCH-R920) | Asus Zenfone 5Z (ZS621KL 128GB) | |
| RAM memory | 512MB LPDDR2 | 6GB LPDDR4X |
| Internal storage | 2GB (1.39GB available) | 128GB (111GB available) UFS 2.1 |
| External storage | Until 32GB microSD, microSDHC (dedicated slot) | Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) |
📶 Mobile networks | ||
| Galaxy Attain 4G (SCH-R920) | Asus Zenfone 5Z (ZS621KL 128GB) | |
| Dual-SIM | Not supported | Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot) |
| SIM card | 1 slot (Single-SIM) Standard mini-SIM (2FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 100/50 Mbps | 800/100 Mbps |
| Network technology | 2G, 3G, 4G | 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 800/1700/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | CDMA2000 1xEV-DO | UMTS 800/850/900 |
| Primary 4G network | LTE 1700/2100 | LTE Cat15 (Bands 1,2,3,5,7,8,18,19,20,26,28) TD-LTE (Bands 38,39,40,41) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | CDMA2000 EV-DO Rev A, LTE | 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 | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | GPRS, EDGE |
📷 Camera | ||
| Galaxy Attain 4G (SCH-R920) | Asus Zenfone 5Z (ZS621KL 128GB) | |
| Back camera (main camera) | 3.1 megapixels | (dual camera) 12 megapixels 8MP ultrawide f/2.012mm1/4"1.12µmFF |
| Main camera resolution | 2048x1536 pixels | 4000x3000 pixels |
| Video recording (primary) | VGA (720x480) | 4K UHD (3840x2160) 30 fps |
| Flash | LED flash | Dual-LED flash |
| Focal aperture | feature not registered | f/1.8 (aperture) |
| Focal length | feature not registered | 24mm (lens) |
| Sensor size | feature not registered | 1/2.55" inches |
| Pixel size | feature not registered | 1.4µm pixel |
| Autofocus | Autofocus | PDAF: phase detection autofocus |
| Touch focus | feature not registered | Supported |
| Image stabilization | feature not registered | OIS (4-axis): Optical 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 on both cameras |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Galaxy Attain 4G (SCH-R920) | Asus Zenfone 5Z (ZS621KL 128GB) | |
| Front camera (secondary) | 1.3 megapixels | 8 megapixels |
| Front camera resolution | 1280x1024 pixels | 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 | 24mm (lens) |
| Sensor size | feature not registered | 1/4" inches |
| Pixel size | feature not registered | 1.12µm pixel |
🔉 Sound and multimedia | ||
| Galaxy Attain 4G (SCH-R920) | Asus Zenfone 5Z (ZS621KL 128GB) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | feature not registered | 2 microphones or more |
| Radio | Not supported | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263, WMV | MP4, H.265, H.264, H.263 |
| Audio formats | MP3, WAV, WMA, eAAC+ | MP3, OGG, eAAC+, FLAC |
🔌 Connectivity | ||
| Galaxy Attain 4G (SCH-R920) | Asus Zenfone 5Z (ZS621KL 128GB) | |
| 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 | Not supported |
| Bluetooth | 3.0 + A2DP | 5.0 + A2DP/LE |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) 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 | ||
| Galaxy Attain 4G (SCH-R920) | Asus Zenfone 5Z (ZS621KL 128GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy Attain 4G (SCH-R920) | Asus Zenfone 5Z (ZS621KL 128GB) | |
| Battery type | Li-Ion: lithium-ion (Removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 1650 mAh | 3300 mAh |
| Charger, watts | Wired charging | 18W (9V/2A) Wired fast charging |
| Inductive / wireless charging | feature not registered | Not supported |
| Talk time autonomy | 3.5 hours | 25 hours (1 days) |
| Standby | 200 hours (8.3 days) | feature not registered |
➕ Other features | ||
| Galaxy Attain 4G (SCH-R920) | Asus Zenfone 5Z (ZS621KL 128GB) | |
| Call control | Voice recorder | Voice dialing, Voice recorder |
| Messaging | SMS (Swype), 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, Flash player | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Black • 2GB microSD included • Samsung TouchWiz 4 UI • HAC M4/T4 • WiFi hotspot • Java framework | • Colors: Midnight Blue, Meteor Silver • 2.5D curved glass screen • 95% DCI-P3 coverage • Supports glove touch • ASUS ZenUI 5.0 • 24-bit/192kHz audio • DTS sound (only headphones) |
☢️ Radiation rate | ||
| Galaxy Attain 4G (SCH-R920) | Asus Zenfone 5Z (ZS621KL 128GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 1.04W/kg (head), 0.37W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 1.2W/kg (head), 1.477W/kg (body) |