Samsung Galaxy S4 Duos (GT-i9502 64GB) vs Xiaomi Redmi Note 9 (64GB/4GB)
Side by side comparison between Samsung Galaxy S4 vs Xiaomi Redmi Note 9 phones, differences, pros, cons and full specifications. What's the better?
,
5"
AMOLED
AMOLED
1080x1920
13
MP
MP
2.1mp
2GB
RAM
RAM
Octa-core
2600
mAh
mAh
(Removable)
vs
6.53"
IPS
IPS
1080x2340
48
MP
MP
13mp
4GB
RAM
RAM
Octa-core
5020
mAh
mAh
(Non removable)
What's the better phone? Xiaomi Redmi Note 9 (64GB/4GB)
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!
10 Advantages 
22 Advantages | 24 Common items in both devices |
| Plastic body, glass front |
| 60Hz |
| 16 million |
| LED flash |
| Only digital zoom |
| Autofocus / PDAF: phase detection autofocus |
| EIS: Digital stabilization |
| +17 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 S4 Duos (GT-i9502 64GB) | Redmi Note 9 (64GB/4GB) | |
| Model | Galaxy S4 Duos (GT-i9502 64GB) | Redmi Note 9 (64GB/4GB) |
| Other model names | Galaxy S4 Dual-Sim i9502 | Mi Redmi Note 9 M2003J15SS |
| Country or region available |   (Global, International), China |  India |
| Brand | Samsung | Xiaomi |
| Release date | 5/1/2013, Announced: 3/15/2013 | 5/12/2020, Announced: 4/30/2020 |
| Depth | 7.9 millimeters (0.31 inches) | 8.9 millimeters (0.35 inches) |
| Size (width x height) | 69.8 x 136.6 millimeters (2.75 x 5.38 in) | 77.2 x 162.3 millimeters (3.04 x 6.39 in) |
| Weight | 132 grams (4.62 ounces) | 199 grams (6.97 ounces) |
| Build, materials | Plastic body, glass front | Plastic body, glass front |
| Protection against water and others | Not supported | Water repellent nano-coating (don't immerse) |
📲 Display | ||
| Galaxy S4 Duos (GT-i9502 64GB) | Redmi Note 9 (64GB/4GB) | |
| Display type | Super AMOLED | TFT IPS LCD |
| Screen size | 5" inches | 6.53" inches |
| Screen-to-body ratio | ~72.3% (screen-to-body ratio) | ~83.5% (screen-to-body ratio) |
| Display resolution | 1080x1920 pixels (16:9) | 1080x2340 pixels (19.5:9) |
| Touchscreen | Capacitive Multitouch 10-points | Capacitive Multitouch |
| Pixel density (dot pitch) | 441 PPI | 395 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 3 | Gorilla Glass 5 |
| Refresh rate | 60Hz | 60Hz |
| Display features | Not supported | 450nits[typ] |
🤖 Operating System | ||
| Galaxy S4 Duos (GT-i9502 64GB) | Redmi Note 9 (64GB/4GB) | |
| System version | Android 4.2.2 Jelly Bean | Android 10 |
| Firmware update | Android 5.0.1 Lollipop | Android 11 |
| User Interface | TouchWiz UI | MIUI 11 / 12 |
⚙️ Processor | ||
| Galaxy S4 Duos (GT-i9502 64GB) | Redmi Note 9 (64GB/4GB) | |
| Chipset | 32bit: Samsung Exynos 5410 (28nm) | 64bit: MediaTek Helio G85 (12nm) |
| CPU | Octa-core, 2 processors: 4x 1.6GHz ARM Cortex-A15 (Quad-core) 4x 1.2GHz ARM Cortex-A7 (Quad-core) | Octa-core, 2 processors: 2x 2GHz ARM-Cortex-A75 (Dual-core) 6x 1.8GHz ARM-Cortex-A55 (Hexa-core) |
| GPU graphical controller | PowerVR SGX544 MP3 (532MHz) | ARM Mali-G52 MC2 (1GHz) |
| Performance (benchmark) | feature not registered | AnTuTu: 200451 (v8) Geekbench: 1292 (v5.1) |
💽 Memory and storage | ||
| Galaxy S4 Duos (GT-i9502 64GB) | Redmi Note 9 (64GB/4GB) | |
| RAM memory | 2GB LPDDR3 | 4GB LPDDR4X |
| Internal storage | 64GB (55GB available) eMMC 5.0 | 64GB (50GB available) eMMC 5.1 |
| External storage | Until 64GB microSD, microSDXC (dedicated slot) | Until 512GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Galaxy S4 Duos (GT-i9502 64GB) | Redmi Note 9 (64GB/4GB) | |
| 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) micro-SIM (3FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 42/5.76 Mbps | 300/150 Mbps |
| Network technology | 2G, 3G | 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 850/900/1900/2100 | UMTS 850/900/1700/1900/2100 |
| Primary 4G network | Not supported | LTE Cat7 (1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) VoLTE |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ | 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 | Not supported | UMTS 850/900/1700/1900/2100 |
| Secondary 4G network | Not supported | LTE Cat7 (1, 2, 3, 4, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) VoLTE |
| Secondary data network | GPRS, EDGE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
📷 Camera | ||
| Galaxy S4 Duos (GT-i9502 64GB) | Redmi Note 9 (64GB/4GB) | |
| Back camera (main camera) | 13 megapixels | (quad camera) 48 megapixels 8MP ultrawide f/2.213mm1/4"1.12µm118° 2MP macro f/2.41.75µmAF 2MP depth f/2.41/5"1.7µm |
| Main camera resolution | 4128x3096 pixels | 8000x6000 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | Full HD (1920x1080) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/2.2 (aperture) | f/1.8 (aperture) |
| Focal length | 31mm lens | 26mm lens |
| Sensor size | 1/3.1" inches | 1/2" inches |
| Pixel size | 1.14µm pixel | 0.8µm pixel |
| Autofocus | 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 | Supported | Supported |
| HDR | HDR photo/video only main camera | HDR photo on both cameras |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Galaxy S4 Duos (GT-i9502 64GB) | Redmi Note 9 (64GB/4GB) | |
| Front camera (secondary) | 2.1 megapixels | 13 megapixels |
| Front camera resolution | 1920x1080 pixels | 4128x3096 pixels |
| Video recording (secondary) | Full HD (1920x1080) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.4 (aperture) | f/2.3 (aperture) |
| Focal length | 31mm lens | 29mm lens |
| Sensor size | feature not registered | 1/3.06" inches |
| Pixel size | feature not registered | 1.12µm pixel |
🔉 Sound and multimedia | ||
| Galaxy S4 Duos (GT-i9502 64GB) | Redmi Note 9 (64GB/4GB) | |
| 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.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 | ||
| Galaxy S4 Duos (GT-i9502 64GB) | Redmi Note 9 (64GB/4GB) | |
| USB | MicroUSB 2.0, USB OTG On-The-Go | USB 2.0 Type-C, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Micro-B USB MHL | USB Type-C (reversible) |
| Bluetooth | 4.0 + A2DP | 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 | Supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Supported | Not supported |
| Infrared port | Supported | Supported |
🧭 Sensors | ||
| Galaxy S4 Duos (GT-i9502 64GB) | Redmi Note 9 (64GB/4GB) | |
| Sensors | Accelerometer Ambient light sensor ANT+ Barometer Compass Gyroscope Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy S4 Duos (GT-i9502 64GB) | Redmi Note 9 (64GB/4GB) | |
| Battery type | Li-Ion: lithium-ion (Removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 2600 mAh | 5020 mAh |
| Charger, watts | 10W (5V/2A) Wired charging | 18W Wired fast charging 9W Reverse charging by cable |
| Inductive / wireless charging | Not supported | Not supported |
| Talk time autonomy | 17 hours | 33 hours (1.4 days) |
| Standby | 350 hours (14.6 days) | feature not registered |
➕ Other features | ||
| Galaxy S4 Duos (GT-i9502 64GB) | Redmi Note 9 (64GB/4GB) | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder, Voice commands |
| 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, HTML5 | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: White Frost, Black Mist • Dual Shot camera • mDNIe • S-Voice • Group Play • Smart Stay eye tracking • Dropbox (50GB) • Java framework | • Colors: Forest Green, Midnight Grey, Polar White • 22.5W charger (18W phone support) |
☢️ Radiation rate | ||
| Galaxy S4 Duos (GT-i9502 64GB) | Redmi Note 9 (64GB/4GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.84W/kg (head), 0.9W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.8W/kg (head), 1.14W/kg (body) |