🔑 Key Specs — vivo X21 UD
- OS: Android 8.1 (Oreo), Funtouch 4
- Chipset: Qualcomm SDM660 Snapdragon 660 (14 nm)
- Display: 6.28 inches, 98.4 cm2 (~85.2% screen-to-body ratio)
- Display Type: Li-Ion 3200 mAh, non-removable
- Storage: 128GB 6GB RAM
- Main Camera: 12 MP, f/2.0, (wide), 1/2.8″, 1.28µm
- Battery: Li-Ion 3200 mAh, non-removable / 18W wired
- Weight: 156.2 g (5.50 oz)
- NFC: No
- Colors: Black, Ruby Red
- Price: About 550 EUR
✅ Pros
- Li-Ion 3200 mAh, non-removable battery
- 3.5mm headphone jack
- Dedicated microSD card slot
❌ Cons
- Slow charging speed
- No 5G support
vivo X21 UD – Full Specifications and Complete Review
📅 Released 2018, March
⚡ Quick Overview
💻 Operating System
Android 8.1, Funtouch 4
📏 Dimensions & Weight
156.2g, 7.4mm thickness
💾 Memory & Storage
128GB storage, microSDXC
🔗 Services vivo X21 UD
|
🔧
Problem Solutions
Hardware Fix
|
📥
Download Firmware
Rom & Flash
|
|
🔓
Network Unlock
Unlock & FRP
|
⚙️
Root Files
Root Files
|
📑 Review Contents
Network
| Technology | GSM / CDMA / HSPA / LTE |
| 2G bands | GSM 850 / 900 / 1800 / 1900 CDMA 800 & TD-SCDMA |
| 3G bands | HSDPA 850 / 900 / 1900 / 2100 |
| 4G bands | 1, 2, 3, 5, 8, 34, 38, 39, 40, 41 |
| Speed | HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps |
Launch
| Announced | 2018, March. Released 2018, March |
| Status | Discontinued |
Body
| Dimensions | 154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in) |
| Weight | 156.2 g (5.50 oz) |
| Build | Glass front (Gorilla Glass 3), aluminum back, aluminum frame |
| SIM | Nano-SIM + Nano-SIM |
Display
| Type | Super AMOLED |
| Size | 6.28 inches, 98.4 cm2 (~85.2% screen-to-body ratio) |
| Resolution | 1080 x 2280 pixels, 19:9 ratio (~402 ppi density) |
| Protection | Corning Gorilla Glass 3 |
Platform
| OS | Android 8.1 (Oreo), Funtouch 4 |
| Chipset | Qualcomm SDM660 Snapdragon 660 (14 nm) |
| CPU | Octa-core (4×2.2 GHz Kryo 260 Gold & 4×1.8 GHz Kryo 260 Silver) |
| GPU | Adreno 512 |
Memory
| Card slot | microSDXC (uses shared SIM slot) |
| Internal | 128GB 6GB RAM |
| Other | eMMC 5.1 |
Main Camera
| Dual | 12 MP, f/1.8, 1/2.55″, 1.4µm, dual pixel PDAF Auxiliary lens |
| Features | LED flash, HDR, panorama |
| Video | 1080p@30fps |
Selfie camera
| Single | 12 MP, f/2.0, (wide), 1/2.8″, 1.28µm |
| Video | 1080p@30fps |
Sound
| Loudspeaker | Yes |
| 3.5mm jack | Yes |
| Other | 32-bit/192kHz Hi-Res audio |
Comms
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
| Bluetooth | 5.0, A2DP, LE |
| Positioning | GPS, GLONASS |
| NFC | No |
| Radio | FM radio |
| USB | microUSB 2.0, OTG |
Features
| Sensors | Fingerprint (under display, optical), accelerometer, proximity, compass |
Battery
| Type | Li-Ion 3200 mAh, non-removable |
| Charging | 18W wired |
Misc
| Colors | Black, Ruby Red |
| Models | X21UD A |
| Price | About 550 EUR |
❓ Frequently Asked Questions — vivo X21 UD
Q1: What is the operating system of vivo X21 UD?
Android 8.1 (Oreo), Funtouch 4
Q2: What is the battery capacity of vivo X21 UD?
Li-Ion 3200 mAh, non-removable with 18W wired charging
Q3: What are the camera specs of vivo X21 UD?
12 MP, f/2.0, (wide), 1/2.8″, 1.28µm
Q4: What is the storage capacity of vivo X21 UD?
128GB 6GB RAM
Q5: Does vivo X21 UD support NFC?
No
Q6: What are the dimensions and weight of vivo X21 UD?
154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in) – Weight: 156.2 g (5.50 oz)
Q7: What chipset does vivo X21 UD use?
Qualcomm SDM660 Snapdragon 660 (14 nm)
Q8: What is the price of vivo X21 UD?
About 550 EUR
