HMD XR21 vs Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB)
Side by side comparison between HMD XR21 vs Asus Zenfone 4 Selfie Pro phones, differences, pros, cons and full specifications. What's the better?
,
6.49"
IPS
IPS
1080x2400
64
MP
MP
16mp
6GB
RAM
RAM
Octa-core
4800
mAh
mAh
(Non removable)
vs
5.5"
AMOLED
AMOLED
1080x1920
16
MP
MP
12mp
4GB
RAM
RAM
Octa-core
3000
mAh
mAh
(Non removable)
What's the better phone? HMD XR21
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!
23 Advantages 
8 Advantages | 23 Common items in both devices |
| 16 million |
| Only digital zoom |
| PDAF: phase detection autofocus |
| HDR photo on both cameras |
| Capacitive |
| Multitouch |
| Accelerometer |
| +16 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 | ||
| HMD XR21 | Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB) | |
| Change model | ||
| Model | HMD XR21 | Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB) |
| Other model names | HMD XR21 TA-1592 | Asus Zenfone 4 Selfie Pro ZD552KL (64GB + 4GB RAM) |
| Country or region available |  (Global, International) |          Brazil, China, (Europe), Philippines, Hong Kong, India, Indonesia, Malaysia, Taiwan, (Global, International) |
| Brand | HMD | Asus |
| Release date | 5/1/2024, Announced: 5/14/2024 | 9/14/2017 |
| Depth | 10.45 millimeters (0.41 inches) | 6.85 millimeters (0.27 inches) |
| Size (width x height) | 78.58 x 168 millimeters (3.09 x 6.61 in) | 74.8 x 154 millimeters (2.94 x 6.06 in) |
| Weight | 231 grams (8.09 ounces) | 147 grams (5.15 ounces) |
| Build, materials | Plastic body, glass front | feature not registered |
| Protection against water and others | IP68/IP69K certified: water-resistant up to 1.5 meters for 30min, dust-resistant, plus high-pressure and steam-washable. MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant. | Not supported |
📲 Display | ||
| HMD XR21 | Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB) | |
| Display type | TFT IPS LCD | AMOLED |
| Screen size | 6.49" inches | 5.5" inches |
| Screen-to-body ratio | ~77% (screen-to-body ratio) | ~72.4% (screen-to-body ratio) |
| Display resolution | 1080x2400 pixels (20:9) | 1080x1920 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 406 PPI | 401 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass Victus | Gorilla Glass 5 |
| Refresh rate | 120Hz | feature not registered |
| Display features | 450nits[typ], 550nits[peak] | feature not registered |
🤖 Operating System | ||
| HMD XR21 | Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB) | |
| System version | Android 13 | Android 7.0 Nougat |
| Firmware update | Android 14 | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| HMD XR21 | Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB) | |
| Chipset | 64bit: Qualcomm Snapdragon 695 (SM6375) (6nm) | 64bit: Qualcomm Snapdragon 625 MSM8953 (14nm) |
| CPU | Octa-core, 2 processors: 2x 2.2GHz Kryo 660 Gold (Dual-core) 6x 1.7GHz Kryo 660 Silver (Hexa-core) | Octa-core, 1 processor: 8x 2GHz ARM Cortex-A53 (Octa-core) |
| GPU graphical controller | Qualcomm Adreno 619 (840MHz) | Qualcomm Adreno 506 650Mhz |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| HMD XR21 | Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB) | |
| RAM memory | 6GB LPDDR4X | 4GB LPDDR3 |
| Internal storage | 128GB (101GB available) UFS 2.2 | 64GB (54GB available) eMMC 5.1 |
| External storage | Not supported | Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) |
📶 Mobile networks | ||
| HMD XR21 | Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card | Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot) |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) + e-SIM | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 2000/1024 Mbps | 150/50 Mbps |
| Network technology | 2G, 3G, 4G, 5G | 2G, 3G, 4G |
| 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 | Global version: UMTS 850/900/2100 USA/Brazil version: UMTS 850/900/1700/1900/2100 Taiwan/Japan/Hong Kong version: UMTS 800/850/900/1900/2100 |
| Primary 4G network | LTE Cat15 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 32, 66, 71) TD-LTE (38, 39, 40, 41, 42, 43, 48) VoLTE | LTE Cat4 Global version: LTE (Bands 1,3,5,7,8,20) TD-LTE (Bands 40) USA/Brazil version: LTE (Bands 1,2,3,4,5,7,8,12,17,28) Taiwan/Japan/Hong Kong version: LTE (Bands 1,3,5,7,8,18,19,26,28) TD-LTE (Bands 38,41) |
| Primary 5G network | SA/NSA (1, 2, 3, 5, 7, 8, 20, 25, 28, 38, 40, 41, 48, 66, 71, 77, 78, 79) | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE |
| 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 Cat15 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 32, 66, 71) TD-LTE (38, 39, 40, 41, 42, 43, 48) VoLTE | Not supported |
| Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA | GPRS, EDGE |
📷 Camera | ||
| HMD XR21 | Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB) | |
| Back camera (main camera) | (dual camera) 64 megapixels 8MP ultrawide f/2.21/4"1.12µm | 16 megapixels |
| Main camera resolution | 10120x6328 pixels | 4608x3456 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | 4K UHD (3840x2160) 30 fps |
| Flash | Dual-LED flash | Dual-LED on main camera and LED on front camera |
| Focal aperture | f/1.8 (aperture) | feature not registered |
| Focal length | feature not registered | 26mm (lens) |
| Sensor size | 1/2" inches | feature not registered |
| Pixel size | feature not registered | feature not registered |
| Autofocus | PDAF: phase detection autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | OIS: Optical stabilization | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Supported | Not supported |
| HDR | HDR photo on both cameras | HDR photo on both cameras |
| Camera extras | 1080p@30fps | feature not registered |
📸 Front camera | ||
| HMD XR21 | Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB) | |
| Front camera (secondary) | 16 megapixels | (dual front camera) 12 megapixels 8MP 12mm120° |
| Front camera resolution | 4608x3456 pixels | 4000x3000 pixels |
| Video recording (secondary) | Full HD (1920x1080) | 4K UHD (3840x2160) |
| Front flash | Not supported | LED |
| Focal aperture | feature not registered | f/1.8 (aperture) |
| Focal length | feature not registered | 25mm (lens) |
| Sensor size | feature not registered | 1/2.55" inches |
| Pixel size | feature not registered | 1.4µm pixel |
🔉 Sound and multimedia | ||
| HMD XR21 | Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB) | |
| Loudspeaker | Stereo sound with dual speakers | Supported |
| Active noise cancellation | 2 microphones | 2 microphones or more |
| Radio | FM | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.264, H.263 |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, OGG, eAAC+, FLAC |
🔌 Connectivity | ||
| HMD XR21 | Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB) | |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | MicroUSB 2.0 |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | USB Type-C (reversible) | Not supported |
| Bluetooth | 5.1 + A2DP/LE | 4.2 + 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) WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, NavIC | A-GPS, GeoTagging, GLONASS, BeiDou |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| HMD XR21 | Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB) | |
| Sensors | Accelerometer Ambient light sensor Barometer Compass Face unlock 2D Fingerprint sensor (side-mounted) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Compass Fingerprint sensor Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| HMD XR21 | Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB) | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 4800 mAh | 3000 mAh |
| Charger, watts | 33W Wired fast charging Reverse charging by cable Quick Charge 3 USB Power Delivery 2.0 | 10W (5V/2A) Wired charging |
| Inductive / wireless charging | Not supported | feature not registered |
| Talk time autonomy | 48 hours (2 days) | 30 hours (1.3 days) |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| HMD XR21 | Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB) | |
| 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 | 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: Midnight Black | • Colors: Rouge Red, Sunlight Gold, Deepsea Black • Metal body • ASUS ZenUI 4.0 • 2.5D screen glass • DTS sound enhancement • Hi-Res audio • 24-bit/192kHz audio • Slow motion 720p@120fps • Sony IMX362 sensor front camera • DuoPixel 24MP (2x12MP) front camera • Fast battery charging • VoLTE |
☢️ Radiation rate | ||
| HMD XR21 | Asus Zenfone 4 Selfie Pro (ZD552KL 64GB/4GB) | |
| 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 |