Samsung Galaxy A21 (SM-A215U1) vs ZTE Axon M (Z999)
Side by side comparison between Samsung Galaxy A21 vs ZTE Axon M phones, differences, pros, cons and full specifications. What's the better?
,
6.5"
PLS
PLS
720x1600
16
MP
MP
13mp
3GB
RAM
RAM
Octa-core
4000
mAh
mAh
(Non removable)
vs
5.2"
IPS
IPS
1080x1920
20
MP
MP
4GB
RAM
RAM
Quad-core
3180
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy A21 (SM-A215U1)
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!
13 Advantages 
11 Advantages | 22 Common items in both devices |
| Plastic body, glass front |
| 16 million |
| Only digital zoom |
| PDAF: phase detection autofocus |
| EIS: Digital stabilization |
| f/1.8 (aperture) |
| 4G LTE / 4G LTE-A |
| +15 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 A21 (SM-A215U1) | ZTE Axon M (Z999) | |
| Model | Galaxy A21 (SM-A215U1) | Axon M (Z999) |
| Other model names | Galaxy A21 SM-A215UZKAXAA (USA Unlocked) | AT&T ZTE Axon M foldable, ZTE Z999, 中兴天机Axon M |
| Country or region available |  USA | USA |
| Brand | Samsung | ZTE |
| Release date | 6/26/2020 | 11/1/2017 |
| Depth | 8.1 millimeters (0.32 inches) | 12.2 millimeters (0.48 inches) |
| Size (width x height) | 76.7 x 167.8 millimeters (3.02 x 6.61 in) | 71.6 x 150.9 millimeters (2.82 x 5.94 in) |
| Weight | 193 grams (6.76 ounces) | 230 grams (8.05 ounces) |
| Build, materials | Plastic body, glass front | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Galaxy A21 (SM-A215U1) | ZTE Axon M (Z999) | |
| Display type | TFT PLS | TFT IPS LCD |
| Screen size | 6.5" inches | 5.2" inches |
| Screen-to-body ratio | ~79.3% (screen-to-body ratio) | ~69% (screen-to-body ratio) |
| Display resolution | 720x1600 pixels (20:9) | 1080x1920 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 270 PPI | 424 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Gorilla Glass 5 |
| Refresh rate | 60Hz | feature not registered |
| Display features | Not supported | feature not registered |
🤖 Operating System | ||
| Galaxy A21 (SM-A215U1) | ZTE Axon M (Z999) | |
| System version | Android 10 | Android 7.1.2 Nougat |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Galaxy A21 (SM-A215U1) | ZTE Axon M (Z999) | |
| Chipset | 64bit: MediaTek Helio P35 (MT6765) (12nm) | 64bit: Qualcomm Snapdragon 821 MSM8996AB Pro (14nm) |
| CPU | Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A53 (Quad-core) 4x 1.8GHz ARM Cortex-A53 (Quad-core) | Quad-core, 2 processors: 2x 2.15GHz Kryo (Dual-core) 2x 1.6GHz Kryo (Dual-core) |
| GPU graphical controller | PowerVR GE8320 MP2 (680MHz) | Qualcomm Adreno 530 624Mhz |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Galaxy A21 (SM-A215U1) | ZTE Axon M (Z999) | |
| RAM memory | 3GB LPDDR3 | 4GB LPDDR4 |
| Internal storage | 32GB (20GB available) eMMC 5.1 | 64GB (45GB available) |
| External storage | Until 512GB microSD, microSDXC (dedicated slot) | Until 256GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Galaxy A21 (SM-A215U1) | ZTE Axon M (Z999) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) nano-SIM (4FF) | 1 slot (Single-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 150/50 Mbps | 300/50 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G, 4G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Dual-Band 850/1900 |
| Primary 2G network | CDMA 800/1900, GSM 850/900/1800/1900 | GSM 850/1900 |
| Primary 3G network | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 | UMTS 850/1700/1900 |
| Primary 4G network | LTE Cat4 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 66, 71) TD-LTE (38, 39, 40, 41) VoLTE | LTE Cat12 (Bands 2, 4, 5, 12, 29, 30, 66) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A |
| 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 | ||
| Galaxy A21 (SM-A215U1) | ZTE Axon M (Z999) | |
| Back camera (main camera) | (quad camera) 16 megapixels 8MP ultrawide f/2.21/4.0"1.12µm 2MP macro f/2.4 2MP depth f/2.4 | 20 megapixels |
| Main camera resolution | 4608x3456 pixels | 5472x3648 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | 4K UHD (3840x2160) 30 fps |
| Flash | LED flash | Dual-LED flash |
| Focal aperture | f/1.8 (aperture) | f/1.8 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | 1/3.06" inches | 1/2.8" inches |
| Pixel size | 1µm pixel | 1µm pixel |
| Autofocus | PDAF: phase detection autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Not supported | Not supported |
| HDR | HDR photo on both cameras | HDR photo only main camera |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Galaxy A21 (SM-A215U1) | ZTE Axon M (Z999) | |
| Front camera (secondary) | 13 megapixels | Not supported |
| Front camera resolution | 4128x3096 pixels | Not supported |
| Video recording (secondary) | Full HD (1920x1080) | Not supported |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.0 (aperture) | feature not registered |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | 1.12µm pixel | feature not registered |
🔉 Sound and multimedia | ||
| Galaxy A21 (SM-A215U1) | ZTE Axon M (Z999) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | FM | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.265, H.264, H.263 |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, OGG, eAAC+, FLAC |
🔌 Connectivity | ||
| Galaxy A21 (SM-A215U1) | ZTE Axon M (Z999) | |
| USB | USB 2.0 Type-C reversible connector | USB 2.0 Type-C reversible connector |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 5.0 + A2DP/LE | 4.2 + A2DP |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS |
| NFC | Supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy A21 (SM-A215U1) | ZTE Axon M (Z999) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Compass Fingerprint sensor Gyroscope Hall effect Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy A21 (SM-A215U1) | ZTE Axon M (Z999) | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 4000 mAh | 3180 mAh |
| Charger, watts | 15W Wired fast charging | 18W Wired fast charging |
| Inductive / wireless charging | Not supported | feature not registered |
| Talk time autonomy | feature not registered | 28.5 hours (1.2 days) |
| Standby | feature not registered | 290 hours (12.1 days) |
➕ Other features | ||
| Galaxy A21 (SM-A215U1) | ZTE Axon M (Z999) | |
| Call control | Voice dialing, Voice recorder, Voice commands | 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 | 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: Black • One UI 2.0 | • Colors: Carbon Black • 2.5D glass screen • Additional 5.2" IPS screen (Dual screen) • Quick Charge 3.0 (47% in 30min) • Dolby Atmos sound • 32-bit/384kHz audio • Sony IMX350 sensor in both cameras • Slow motion 720p@240fps |
☢️ Radiation rate | ||
| Galaxy A21 (SM-A215U1) | ZTE Axon M (Z999) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.6W/kg (head), 1.27W/kg (body) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |