Both Xiaomi Redmi K20 (6GB RAM + 128GB) and Samsung Galaxy A15 5G (6GB RAM + 128GB) comes with same RAM. Both have the same amount of internal memory.
| Name | Xiaomi Redmi K20 (6GB RAM + 128GB) | Samsung Galaxy A15 5G (6GB RAM + 128GB) | 
| RAM | 6 GB | 6 GB | 
|---|---|---|
| Display | 6.39 in | 6.5 in | 
| Internal Memory | 128 GB | 128 GB | 
| Battery | 4000 mAh | 5000 mAh | 
| Camera | 48 MP + 13 MP + 8 MP Triple | 50 MP + 5 MP + 2 MP Triple | 
| Price | Rs. 17790 | Rs. 13999 | 
The launch Date of the first phone is July 17, 2019. The cost of Xiaomi Redmi K20 (6GB RAM + 128GB) is Rs. 17790. The launch Date of the second phone is February 15th, 2024. The cost of Samsung Galaxy A15 5G (6GB RAM + 128GB) is Rs. 13999.
Samsung Galaxy A15 5G (6GB RAM + 128GB) has larger screen size of 6.5 inches in comparison to Xiaomi Redmi K20 (6GB RAM + 128GB)'s 6.39 inch screen. Xiaomi Redmi K20 (6GB RAM + 128GB) has AMOLED Screen type where as Samsung Galaxy A15 5G (6GB RAM + 128GB) has Super AMOLED Screen type. Xiaomi's phone has display density of 403 PPI & Samsung's phone has only 396 PPI display density. In terms of screen to body ratio, Xiaomi's phone has better screen to body ratio of ~ 91.9% than Samsung's phone ~ 84.3%. Both phones have same aspect ratio of 19.5:9.
Both phones come with 6 GB RAM and both have same Internal Memory of 128 GB.
Samsung Galaxy A15 5G (6GB RAM + 128GB)'s 50 MP + 5 MP + 2 MP Triple Rear Camera outshines Xiaomi Redmi K20 (6GB RAM + 128GB)'s 48 MP + 13 MP + 8 MP Triple Rear Camera in terms of resolution. Xiaomi Redmi K20 (6GB RAM + 128GB) will be better choice if you're looking to click lot of selfies as it has better 20 MP Front Camera in comparison to Samsung Galaxy A15 5G (6GB RAM + 128GB)'s 13 MP Front Camera.
Both the phones has Android Operating System but the first one runs on version 9.0 and the second one on 14 version.
| Name | Xiaomi Redmi K20 (6GB RAM + 128GB) | Samsung Galaxy A15 5G (6GB RAM + 128GB) | 
| General | ||
| Country of Origin | India | |
| Model | Redmi K20 | SM-A156EZBPINS, SM-A156EZKPINS, SM-A156ELBPINS, SM-A156ELBNINS, SM-A156EZKNINS, SM-A156EZBQINS, SM-A156EZKQINS,SM-A156ELBQINS | 
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM (Hybrid Slot) | 
| Dual Sim | Yes | Yes | 
| Sim Size | Nano SIM | Nano+Nano SIM | 
| Device Type | Smartphone | Smartphone | 
| Release Date | July 17, 2019 | February 15th, 2024 | 
| Design | ||
| Dimensions | 74.3 x 156.7 x 8.8 mm | 76.8 x 160.1 x 8.4 mm | 
| Weight | 191 g | 200 g | 
| Bezel less | No | |
| Colors | Light Blue, Blue Black, Blue | |
| Display | ||
| Type | Color AMOLED Screen (16M Colors) | Color Super AMOLED Screen (16M Colors) | 
| Touch | Yes | Yes | 
| Size | 6.39 inches, 1080 x 2340 pixels | 6.5 inches, 1080 x 2340 pixels, 90 Hz | 
| Aspect Ratio | 19.5:9 | 19.5:9 | 
| PPI | ~ 403 PPI | ~ 396 PPI | 
| Screen to Body Ratio | ~ 91.9% | ~ 84.3% | 
| Features | Corning Gorilla Glass 5, Always On Display, Dark Mode, Reading Mode 2.0 | 800nits | 
| Notch | No | Yes, Water Drop Notch | 
| Memory | ||
| RAM | 6 GB | 6 GB | 
| Storage | 128 GB | 128 GB | 
| Card Slot | No | Yes, (Hybrid Slot), upto 1 TB | 
| Connectivity | ||
| GPRS | Yes | Yes | 
| EDGE | Yes | Yes | 
| 3G | Yes | Yes | 
| 4G | Yes | Yes | 
| 5G | Yes | |
| 5G Bands | FDD Sub6: N1(2100), N3(1800), N5(850), N7(2600), N8(900), N26(850), N28(700), N66(AWS-3), TDD Sub6: N40(2300), N41(2500), N77(3700), N78(3500) | |
| VoLTE | Yes | Yes, Dual Stand-By | 
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot | 
| Wifi Version | 802.11a/b/g/n/ac 2.4GHz+5GHz, VHT80 | |
| Bluetooth | Yes, v5.0 | Yes, v5.3 | 
| USB | Yes, USB-C v2.0 | Yes, USB-C v2.0 | 
| USB Features | USB on-the-go, USB Charging | USB Tethering, USB on-the-go, USB Charging | 
| Extra | ||
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS | Yes | 
| Fingerprint Sensor | Yes, In Display | Yes, Side | 
| Face Unlock | Yes | Yes | 
| Sensors | Vibration moto,r Proximity, Ambient light, Electronic compass, Accelerometer, Gyroscope | Accelerometer, Gyro Sensor, Geomagnetic Sensor, Light Sensor, Virtual Proximity Sensing | 
| 3.5mm Headphone Jack | Yes | Yes | 
| Extra Features | UFS2.1 | up to 4 Generations of OS Upgrades and 5 Years of Security Maintenance, Samsung Knox Vault | 
| Camera | ||
| Rear Camera | 48 MP ƒ/1.8 (Main) 13 MP ƒ/2.4 (Wide Angle) 8 MP ƒ/2.4 (Telephoto) | 50 MP ƒ/1.8 (Wide Angle) 5 MP ƒ/2.2 (Ultra Wide) 2 MP ƒ/2.4 (Macro) | 
| Auto Focus | Yes | Yes | 
| Features | Triple camera zoom, PDAF Focus mode, Monochrome Dual Flash, Slow Motion | Digital Zoom up to 10x, Panorama, HDR | 
| Video Recording | 1080p @ 120/30/60 fps FHD, 720p @ 30 fps HD | 1080p @ 30 fps FHD | 
| Flash | Yes, Dual LED | Yes, LED | 
| Front Camera | 20 MP ƒ/2.2 Popup | 13 MP ƒ/2 (Wide Angle) | 
| Front Video Recording | 1080p @ 30 fps FHD, 720p @ 30 fps HD | 1080p @ 30 fps FHD | 
| Technical | ||
| OS | Android v9.0 (Pie), upgradable to v11 | Android v14 | 
| Custom UI | One UI 6 | |
| Chipset | Qualcomm Snapdragon 730 | Mediatek Dimensity 6100 Plus | 
| CPU | 2.2 GHz, Octa Core Processor | 2.2 GHz, Octa Core Processor | 
| Core Details | 2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver | 2xCortex-A76@2.2 GHz & 6xCortex-A55@2.0 GHz | 
| GPU | Adreno 618 | Mali-G57 MC2 | 
| Java | No | No | 
| Browser | Yes, supports HTML5 | Yes | 
| Multimedia | ||
| Yes | Yes | |
| Music | Yes | MP3, M4A, 3GA, AAC, OGG, OGA, WAV, AMR, AWB, FLAC, MID, MIDI, XMF, MXMF, IMY, RTTTL, RTX, OTA | 
| Video | Yes | MP4, M4V, 3GP, 3G2, AVI, FLV, MKV, WEBM | 
| FM Radio | No | No | 
| Document Reader | Yes | |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery | 
| Size | 4000 mAh, Li-Po Battery | 5000 mAh, Li-ion Battery | 
| Fast Charging | Yes, 18W Fast Charging | Yes, 25W | 
| Reverse Charging | Yes | |
| Talk Time | 44 hours | |
| Music Playback Time | 106 hours | |