iQOO Z9x (6GB RAM + 128GB) vs Vivo Y31 5G
Quick Comparison
iQOO Z9x (6GB RAM + 128GB) has better RAM than Vivo Y31 5G. In terms of display resolution, iQOO Z9x (6GB RAM + 128GB) has better resolution of 2408 x 1080 than Vivo Y31 5G which has resolution of 1608 x 720. Both have the same amount of internal memory.
| Name | iQOO Z9x (6GB RAM + 128GB) | Vivo Y31 5G |
| RAM | 6 GB | 4 GB |
|---|---|---|
| Display | 6.72 in | 6.68 in |
| Internal Memory | 128 GB | 128 GB |
| Battery | 6000 mAh | 6500 mAh |
| Camera | 50 MP + 2 MP Dual | 50 MP |
| Price | Rs. 18490 | Rs. 18999 |
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Detailed Comparison
Price And Launch
The launch Date of the first phone is April 24, 2024. The cost of iQOO Z9x (6GB RAM + 128GB) is Rs. 18490. The launch Date of the second phone is September 15, 2025. The cost of Vivo Y31 5G is Rs. 18999.
Display comparison
Vivo Y31 5G has screen size of 6.68 inches which falls short to iQOO Z9x (6GB RAM + 128GB)'s 6.72 inch screen. Both the phones have IPS Screen Type. iQOO's phone has display density of 393 PPI & Vivo's phone has only 264 PPI display density. In terms of screen to body ratio, iQOO's phone has better screen to body ratio of ~ 86.4% than Vivo's phone ~ 84%. Both phones have same aspect ratio of 20:9.
Memory comparison
iQOO Z9x (6GB RAM + 128GB)'s larger 6 GB RAM is better for playing games and all with respect to Vivo Y31 5G's lower 4 GB RAM. and both have same Internal Memory of 128 GB.
Camera comparison
They both have the same 50 MP + 2 MP Dual Rear Camera. Both of them stand equal in terms of Front Camera Resolution as both have 8 MP Front Camera.
Technical comparison
Both the phones has Android Operating System but the first one runs on version 14 and the second one on 15 version.
Related Comparisons
Full Comparison
| Name | iQOO Z9x (6GB RAM + 128GB) | Vivo Y31 5G |
| General | ||
| Country of Origin | India | India |
| Model | Z9x | Y31 |
| 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 |
| Device Type | Smartphone | Smartphone |
| Release Date | April 24, 2024 | September 15, 2025 |
| In The Box | USB Cable, SIM Tray Ejector, Phone Case, Screen Protector (Applied), Power Adapter | |
| Design | ||
| Dimensions | 76 x 165.7 x 7.99 mm | 77 x 166.1 x 8.4 mm |
| Weight | 199 g | 209 g |
| Bezel less | No | |
| Colors | Tornado Green, Storm Grey | Rose Red, Diamond Green |
| Display | ||
| Type | Color IPS Screen (1B Colors) | Color IPS Screen (16M Colors) |
| Touch | Yes | Yes |
| Size | 6.72 inches, 1080 x 2408 pixels, 120 Hz | 6.68 inches, 720 x 1608 pixels, 120 Hz |
| Aspect Ratio | 20:9 | 20:9 |
| PPI | ~ 393 PPI | ~ 264 PPI |
| Screen to Body Ratio | ~ 86.4% | ~ 84% |
| Glass Type | Guardian Glass (ion-strengthened) | |
| Brightness | 1000nts | |
| Features | 1000 nits Local Peak Brightness, Low Blue Light Certification | |
| Notch | Yes, Punch Hole | Yes, Water Drop Notch |
| Memory | ||
| RAM | 6 GB | 4 GB |
| Expandable RAM | Upto 6 GB Extra Virtual RAM | Upto 4 GB Extra Virtual RAM |
| Storage | 128 GB | 128 GB |
| Storage Type | UFS 2.2 | eMMC 5.1 |
| Card Slot | Yes, (Hybrid Slot), upto 1 TB | Yes, (Hybrid Slot) |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | Yes |
| 5G Bands | n1/n3/n5/n8/n28B/n40/n77(3300-3800MHz)/n78 | |
| VoLTE | Yes, Dual Stand-By | Yes, Dual Stand-By |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | Wi-Fi 5 (802.11 a/b/g/n/ac), Dual Band | |
| Bluetooth | Yes, v5.1, A2DP, LE, aptX HD | Yes, v4.2 |
| USB | Yes, USB-C v2.0 | Yes, USB-C v2.0 |
| USB Features | USB Tethering, USB on-the-go, USB Charging | USB Tethering, USB on-the-go, USB Charging |
| Extra | ||
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BeiDou, GNSS, QZSS | with A-GPS, BeiDou, GLONASS, Galileo |
| Fingerprint Sensor | Yes, Side | Yes, Side |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Ambient light Sensor, Proximity Sensor, E-compass, Fingerprint, Gyroscope sensor | Accelerometer, Proximity, Compass |
| 3.5mm Headphone Jack | Yes | No |
| AI Features | SMart AI, Ai Erase, Ai Photo Enhance, Circle to Search | |
| Water Resistance | Yes | Yes, 1.5 m upto 30 min |
| IP Rating | IP64 | IP68/IP69 |
| Dust Resistant | Yes | Yes |
| Extra Features | Dual Stereo Speakers, Hi-Res Audio | |
| Camera | ||
| Rear Camera | 50 MP ƒ/1.8 (Wide Angle) 2 MP ƒ/2.4 (Depth Sensor) | 50 MP ƒ/1.8 (Wide Angle) |
| Auto Focus | Yes | Yes |
| Features | Night, Portrait, Photo, Video, 50 MP, Panorama, Slo-mo, Time-lapse, Pro, Live photo, Documents | Front: Portrait, Photo, Video, Live Photo | Ring- panorama |
| Video Recording | 4K, 1080p | 1080p @ 30 fps FHD |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 8 MP ƒ/2.05 (Wide Angle) Punch Hole, Screen Flash | 8 MP ƒ/2 (Wide Angle) |
| Front Video Recording | 1080p @ 30 fps FHD | 1080p @ 30 fps FHD |
| Technical | ||
| OS | Android v14 | Android v15 |
| Custom UI | Funtouch OS 14 | |
| Chipset | Qualcomm Snapdragon 6 Gen1 | Qualcomm Snapdragon 4 Gen2 |
| CPU | 2.2 GHz, Octa Core Processor | 2.2 GHz, Octa Core Processor |
| Core Details | 1x Cortex-A710@2.4GHz & 3x Cortex-A710@2.36GHz& 4x Cortex-A510@1.8 GHz | 2x Performance Cores@2.2GHz & 6x Efficiency Cores@2GHz |
| GPU | Adreno 710 | Adreno 613 |
| Java | No | No |
| Browser | Yes | Yes |
| Multimedia | ||
| Yes | Yes | |
| Music | AAC, MIDI, OGG, FLAC, WMA, WAV, APE, MP3 | WAV, MP3, MP2, AMR-NB, MIDI, Vorbis, APE, FLAC, OGG, M4A |
| Video | MP4, 3GP, AVI | MP4, 3GP, AVI, TS, MKV, FLV |
| FM Radio | No | No |
| Speaker Type | Dual Stereo | |
| Document Reader | Yes | |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 6000 mAh, Li-ion Battery | 6500 mAh |
| Fast Charging | Yes, 44W Flash Charge | Yes, 44W |
| Reverse Charging | Yes | |
| Talk Time | 36 hours | |
| Video Playback Time | 21 hours | |
| Music Playback Time | 71 hours | |