Realme 8i (128GB/6GB) vs Samsung Galaxy A21s (SM-A217F/DS 64GB/6GB)
Side by side comparison between Realme 8i vs Samsung Galaxy A21s phones, differences, pros, cons and full specifications. What's the better?
,
6.6"
IPS
IPS
1080x2412
50
MP
MP
16mp
6GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
vs
6.5"
PLS
PLS
720x1600
48
MP
MP
13mp
6GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
What's the better phone? Realme 8i (128GB/6GB)
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!
14 Advantages 
6 Advantages | 29 Common items in both devices |
| 6GB LPDDR4X |
| Until 1TB microSD, microSDXC / Until 512GB microSD, microSDXC |
| Plastic body, glass front |
| 16 million |
| LED flash |
| Only digital zoom |
| PDAF: phase detection autofocus |
| +22 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 | ||
| Realme 8i (128GB/6GB) | Galaxy A21s (SM-A217F/DS 64GB/6GB) | |
| Model | Realme 8i (128GB/6GB) | Galaxy A21s (SM-A217F/DS 64GB/6GB) |
| Other model names | Realme 8i RMX3151 (128GB+6GB RAM) | Galaxy A21s SM-A217F/Dual-Sim (64GB + 6GB RAM) |
| Country or region available |  (Global, International) |        Philippines, India, Indonesia, Malaysia, Myanmar, Thailand, Vietnam |
| Brand | Realme | Samsung |
| Release date | 9/14/2021, Announced: 9/9/2021 | 6/2/2020, Announced: 5/15/2020 |
| Depth | 8.5 millimeters (0.33 inches) | 8.9 millimeters (0.35 inches) |
| Size (width x height) | 75.5 x 164.1 millimeters (2.97 x 6.46 in) | 75.3 x 163.7 millimeters (2.96 x 6.44 in) |
| Weight | 194 grams (6.79 ounces) | 192 grams (6.72 ounces) |
| Build, materials | Plastic body, glass front | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Realme 8i (128GB/6GB) | Galaxy A21s (SM-A217F/DS 64GB/6GB) | |
| Display type | TFT IPS LCD | TFT PLS |
| Screen size | 6.6" inches | 6.5" inches |
| Screen-to-body ratio | ~84.6% (screen-to-body ratio) | ~82.8% (screen-to-body ratio) |
| Display resolution | 1080x2412 pixels (20:9) | 720x1600 pixels (20:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 400 PPI | 270 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | 120Hz | 60Hz |
| Display features | 600nits[peak] | Not supported |
🤖 Operating System | ||
| Realme 8i (128GB/6GB) | Galaxy A21s (SM-A217F/DS 64GB/6GB) | |
| System version | Android 11 | Android 10 |
| Firmware update | feature not registered | Android 12 |
| User Interface | Realme UI 2.0 | One UI 2.0 / 3.1 / 4.1 |
⚙️ Processor | ||
| Realme 8i (128GB/6GB) | Galaxy A21s (SM-A217F/DS 64GB/6GB) | |
| Chipset | 64bit: MediaTek Helio G96 (12nm) | 64bit: Samsung Exynos 850 (8nm) |
| CPU | Octa-core, 2 processors: 2x 2.05GHz ARM Cortex-A76 (Dual-core) 6x 2GHz ARM Cortex-A55 (Hexa-core) | Octa-core, 1 processor: 8x 2GHz ARM Cortex-A55 (Octa-core) |
| GPU graphical controller | ARM Mali-G57 MC2 (850MHz) | ARM Mali-G52 MP1 |
| Performance (benchmark) | AnTuTu: 350000 (v9) | feature not registered |
💽 Memory and storage | ||
| Realme 8i (128GB/6GB) | Galaxy A21s (SM-A217F/DS 64GB/6GB) | |
| RAM memory | 6GB LPDDR4X | 6GB LPDDR4X |
| Internal storage | 128GB (104GB available) UFS 2.1 | 64GB (48GB available) eMMC 5.1 |
| External storage | Until 1TB microSD, microSDXC (dedicated slot) | Until 512GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Realme 8i (128GB/6GB) | Galaxy A21s (SM-A217F/DS 64GB/6GB) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) | Dual-SIM Standby - Call active on one sim card (dedicated slot) |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 400/150 Mbps | 300/150 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 | Quad-Band 850/900/1800/1900 |
| Primary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/900/2100 | UMTS 850/900/1900/2100 |
| Primary 4G network | LTE Cat13 (1, 3, 5, 8) TD-LTE (38, 40, 41) VoLTE | LTE Cat7/13 (1, 2, 3, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
| Secondary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Secondary 3G network | UMTS 850/900/2100 | UMTS 850/900/1900/2100 |
| Secondary 4G network | LTE Cat13 (1, 3, 5, 8) TD-LTE (38, 40, 41) VoLTE | LTE Cat7/13 (1, 2, 3, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) |
| Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
📷 Camera | ||
| Realme 8i (128GB/6GB) | Galaxy A21s (SM-A217F/DS 64GB/6GB) | |
| Back camera (main camera) | (triple camera) 50 megapixels 2MP macro f/2.4 2MP depth f/2.4 | (quad camera) 48 megapixels 8MP ultrawide f/2.21/4"1.12µm123° 2MP macro f/2.4 2MP depth f/2.4 |
| Main camera resolution | 8160x6120 pixels | 8000x6000 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | Full HD (1920x1080) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/1.8 (aperture) | f/2.0 (aperture) |
| Focal length | 26mm lens | 26mm lens |
| Sensor size | 1/2.76" inches | 1/2" inches |
| Pixel size | 0.64µm pixel | 0.8µm 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 on both cameras |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Realme 8i (128GB/6GB) | Galaxy A21s (SM-A217F/DS 64GB/6GB) | |
| Front camera (secondary) | 16 megapixels | 13 megapixels |
| Front camera resolution | 4608x3456 pixels | 4128x3096 pixels |
| Video recording (secondary) | Full HD (1920x1080) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.1 (aperture) | f/2.2 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | 1/3" inches | 1/3.1" inches |
| Pixel size | 1µm pixel | 1.12µm pixel |
🔉 Sound and multimedia | ||
| Realme 8i (128GB/6GB) | Galaxy A21s (SM-A217F/DS 64GB/6GB) | |
| Loudspeaker | Mono sound (not stereo) | Mono sound (not stereo) |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | Not supported | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Realme 8i (128GB/6GB) | Galaxy A21s (SM-A217F/DS 64GB/6GB) | |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | USB 2.0 Type-C reversible connector |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | USB Type-C (reversible) | Not supported |
| Bluetooth | 5.1 + A2DP/LE | 5.0 + A2DP/LE |
| 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, GALILEO, BeiDou | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Not supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Realme 8i (128GB/6GB) | Galaxy A21s (SM-A217F/DS 64GB/6GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (side-mounted) Gyroscope Proximity sensor | Accelerometer Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor Virtual ambient light sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Realme 8i (128GB/6GB) | Galaxy A21s (SM-A217F/DS 64GB/6GB) | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 5000 mAh | 5000 mAh |
| Charger, watts | 18W Wired fast charging | 15W (9V/1.67A) Wired fast charging |
| Inductive / wireless charging | Not supported | Not supported |
| Talk time autonomy | feature not registered | feature not registered |
| Standby | feature not registered | feature not registered |
➕ Other features | ||
| Realme 8i (128GB/6GB) | Galaxy A21s (SM-A217F/DS 64GB/6GB) | |
| 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: Space Black, Space Purple • Screen film protector • Case protector | • Colors: Black, White, Blue, Red |
☢️ Radiation rate | ||
| Realme 8i (128GB/6GB) | Galaxy A21s (SM-A217F/DS 64GB/6GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.422W/kg (head), 1.544W/kg (body) |