Both Realme 15x 5G (8GB RAM + 128GB) and Vivo Y400 5G comes with same RAM. In terms of display resolution, Vivo Y400 5G has better resolution of 2400 x 1080 than Realme 15x 5G (8GB RAM + 128GB) which has resolution of 1570 x 720. Both have the same amount of internal memory.
| Name | Realme 15x 5G (8GB RAM + 128GB) | Vivo Y400 5G |
| RAM | 8 GB | 8 GB |
|---|---|---|
| Display | 6.81 in | 6.67 in |
| Internal Memory | 128 GB | 128 GB |
| Battery | 7000 mAh | 6000 mAh |
| Camera | 50 MP + 2 MP Dual | 50 MP + 2 MP Dual |
| Price | Rs. 16999 | Rs. 22999 |
The launch Date of the first phone is October 01, 2025. The cost of Realme 15x 5G (8GB RAM + 128GB) is Rs. 16999. The launch Date of the second phone is August 04, 2025. The cost of Vivo Y400 5G is Rs. 22999.
Realme 15x 5G (8GB RAM + 128GB) has larger screen size of 6.81 inches in comparison to Vivo Y400 5G's 6.67 inch screen. Realme 15x 5G (8GB RAM + 128GB) has IPS Screen type where as Vivo Y400 5G has AMOLED Screen type. Vivo's phone has display density of 395 PPI & Realme's phone has only 394 PPI display density. In terms of screen to body ratio, Vivo's phone has better screen to body ratio of ~ 91.96% than Realme's phone ~ 90.4%. Both mobiles have same aspect ratio of 20:9.
Both phones come with 8 GB RAM and both have same Internal Memory of 128 GB.
Realme 15x 5G (8GB RAM + 128GB) has 50 MP + 2 MP Dual Rear Camera in comparison to Vivo Y400 5G's 50 MP + 2 MP Dual Rear Camera. Realme 15x 5G (8GB RAM + 128GB) will be better choice if you're looking to click lot of selfies as it has better 50 MP Front Camera in comparison to Vivo Y400 5G's 32 MP Front Camera.
Both the phones run on Android Operating System Version 15.
| Name | Realme 15x 5G (8GB RAM + 128GB) | Vivo Y400 5G |
| General | ||
| Model | V2506 | |
| Sim Type | Dual Sim, GSM+GSM (Hybrid Slot) | Dual Sim, GSM+GSM (Hybrid Slot) |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano+Nano SIM |
| SAR | 0.99 W/kg (Head) 0.8 W/kg (Body) | |
| Device Type | Smartphone | Smartphone |
| Release Date | October 01, 2025 | August 04, 2025 |
| In The Box | 1 realme 15x 5G, 1 USB Type-C Cable, 1 80W Adapter, 1 Protect Case, 1 SIM Card Needle, 1 Screen Protect Film, 1 Quick Guide | Handset, Quick Start Guide, USB Cable, Charger, Eject Tool, Phone Case, Protective Film (Applied), Warranty Card |
| Design | ||
| Dimensions | 77.93 x 166.07 x 8.28 mm | 75.31 x 162.29 x 7.9 mm |
| Weight | 212 g | 197 g |
| Bezel less | No | No |
| Colors | Aqua Blue, Marine Blue, Maroon Red | Olive Green | Glam White |
| Display | ||
| Type | Color IPS Screen (16M Colors) | Color AMOLED Screen (1B Colors) |
| Touch | Yes, 180 Hz Touch Sampling Rate | Yes |
| Size | 6.81 inches, 720 x 1570 pixels, 144 Hz | 6.67 inches, 1080 x 2400 pixels, 120 Hz |
| Aspect Ratio | 20:9 | 20:9 |
| PPI | ~ 394 PPI | ~ 395 PPI |
| Screen to Body Ratio | ~ 90.4% | ~ 91.96% |
| Brightness | HBM 1200nit | Local Peak Brightness: 1800 nits, Brightness HBM: 1200 nits |
| Features | Contrast Ratio: Typical 1500: 1; minimum 1200: 1 | Color Gamut: P3 Wide Color Gamut |
| Notch | Yes, Punch Hole | Yes, Punch Hole |
| Memory | ||
| RAM | 8 GB | 8 GB |
| Expandable RAM | Upto 10 GB Extra Virtual RAM | Upto 8 GB Extra Virtual RAM |
| Storage | 128 GB | 128 GB |
| Card Slot | Yes, (Hybrid Slot) | |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | Yes |
| 5G Bands | 5G NR: n1/3/5/8/28B/40/41/77/78 | n1/n3/n5/n8/n28B/n40/n77/n78 |
| VoLTE | Yes, Dual Stand-By | Yes |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | Support 802.11 a/b/g/n, Wi-Fi 5(802.11ac) | 2.4 GHz / 5 GHz |
| Bluetooth | Yes, v5.3 | Yes, v5.4 |
| USB | Yes, USB-C v2.0 | Yes, USB-C v2.0 |
| USB Features | USB Tethering, USB on-the-go, USB Charging, USB Storage | USB Tethering, USB on-the-go, USB Charging |
| Extra | ||
| GPS | Beidou, GPS, GLONASS, Galileo, QZSS | GPS, BeiDou, GLONASS, Galileo, QZSS |
| Fingerprint Sensor | Yes, Side | Yes, In Display |
| Face Unlock | Yes | Yes |
| Sensors | Proximity sensor, Ambient light sensor, E-compass, Accelerometer | Accelerometer, Ambient Light Sensor, Proximity Sensor, E-Compass, Gyroscope, Ordinary Motor |
| AI Features | Al Edit Genie | AI Transcript, AI Note Assist, Circle to Search |
| Water Resistance | Yes | Yes |
| IP Rating | IP69 Pro | IP68&69 |
| Dust Resistant | Yes | Yes |
| Extra Features | Dual-mic Noise Cancellation | Hi-Res Audio Certification |
| Camera | ||
| Rear Camera | 50 MP (Wide Angle) Resolution: 4096x3072, Equivalent Focal Length: 28mm, FOV: 76°, Lens: 5P, Sensor: 1/2.93” 2 MP (Depth Sensor) | 50 MP ƒ/1.8 (Main) 2 MP ƒ/2.4 (Macro) Macro |
| Camera Sensor | Sony IMX852 | |
| OIS | Yes | |
| Auto Focus | Yes | Yes |
| Features | Photo, Portrait Mode, Night, Panorama, Cinematic, TIME-LAPSE, HI-RES, Underwater, PRO, Hypertext, TILT-SHIFT, AI LANDSCAPE Mode, Street Photography Mod, Dual-View Video Mode | Night, Portrait, Photo, Video, 50 MP, Pano, Documents, Slo-mo, Time-lapse, Pro, Dual View, Live Photo, Underwater Photography |
| Video Recording | 1080p @ 30 fps FHD, 720p @ 30 fps HD | 4K, 1080p |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 50 MP ƒ/2.4 (Wide Angle) OV50D40 50MP Resolution: 4080x3072 Equivalent Focal Length: 22mm FOV:87° Aperture:f/2.4 Lens:5P Sensor: 1/2.88" Punch Hole, Screen Flash | 32 MP (Wide Angle) Punch Hole |
| Front Video Recording | 1080p @ 30 fps FHD | 1080p |
| Technical | ||
| OS | Android v15 | Android v15 |
| Custom UI | Realme UI 6 | Funtouch OS 15 |
| Chipset | Mediatek Dimensity 6300 | Qualcomm Snapdragon 4 Gen2 |
| CPU | 2.4 GHz, Octa Core Processor | 2.2 GHz, Octa Core Processor |
| Core Details | 2X Arm Cortex-A76@2.4GHz & 6X Arm Cortex-A55@2.0GHz | 2x Performance Cores@2.2GHz & 6x Efficiency Cores@2GHz |
| GPU | Arm Mali-G57 MC2 | Adreno |
| Java | No | No |
| Browser | Yes | Yes |
| Multimedia | ||
| Yes | Yes | |
| Music | MP3, AAC, APE, AMR, WAV, OGG, FLAC, WMA | AAC, WAV, MP3, MP2, MP1, MIDI, Vorbis, APE, FLAC, OPUS |
| Video | AVI, 3GP, MP4, WMV, MKV, MOV, ASF, FLV | MP4, 3GP, AVI, TS, MKV, FLV |
| FM Radio | No | No |
| Speaker Type | 1115 Ultra-Linear Speaker | Dual Stereo |
| Document Reader | Yes | Yes |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 7000 mAh | 6000 mAh, Li-ion Battery |
| Fast Charging | Yes, 60W SUPERVOOC Charge | Yes, 90W Fast Charging |
| Reverse Charging | Yes, 6.5W | |