Older flagship · 2018

vivo X21 UD

Nobody owns this yet

Our Take

CPU benches near recent entry-level phones like the Samsung Galaxy A04s

Best for

Strength AMOLED screen

Watch out No Google Play, No more updates

Skip if Heavy gaming or multitasking

6.28″ AMOLED · 60Hz

660 6 / 128 GB

3200 mAh 18W charging

12 MP 12 MP selfie

4G LTE

Compare

Full specifications

Display

6.28″ · Super AMOLED · 1080 × 2280 · 60 Hz · HDR

OLED display

A clean OLED panel — colours pop and sunlight visibility is solid.

Screen size

6.28"

Panel type

Super AMOLED

OLED

Resolution

1080 × 2280 px

Refresh rate

60 Hz

Slow for 2026

HDR

Supported

Protection

Corning Gorilla Glass 3

Performance

Qualcomm SDM660 Snapdragon 660 (14 nm) · 8-core 2.2 GHz · Adreno 512

Basic CPU

Best for calls, messaging, and very light browsing. Avoid heavy multitasking.

Chipset

Qualcomm SDM660 Snapdragon 660 (14 nm)

Current CPU tier

Entry-level

Launch class

Flagship

AnTuTu

143,707

CPU

8-core, 2.2 GHz

GPU

Adreno 512

Process

14 nm

CPU layout

4x Kryo 260 2.2 Ghz + 4x Kryo 260 1.8 Ghz

Software & updates

Android 8.1 (Oreo), Funtouch 4 · 2-year support (brand estimate)

Likely end of life

This phone is past its update window — it still works, but new Android versions and most security patches have stopped.

Operating system

Android 8.1 (Oreo), Funtouch 4

Software support

2 years of updates (brand estimate)

Updates remaining

None — past its update window

Camera

12 MP f/1.8 main · 12 MP selfie

A standard camera setup — sharp in daylight, expect noise in low light.

Main camera

12 MP f/1.8

Front camera

12 MP f/2.0

Main sensor

Samsung S5K2L9, 1/2.55", 1.4µm

Slow motion

Yes, 120 fps

Video

1080p @ 30 fps

Battery

3200 mAh · 18 W wired

Plan to charge daily

Small by today's standards. Plan on charging once a day, twice if you're heavy.

Capacity

3200 mAh

Wired charging

18 W

Slow for 2026

Removable

Memory

6 GB RAM · 128 GB · expandable

RAM

6 GB

Storage

128 GB

Storage type

eMMC 5.1

Expandable

Yes

Connectivity

4G LTE · Wi-Fi 5

4G LTE

Yes

NFC

Wi-Fi

Wi-Fi 5

Bluetooth

5.0

GPS systems

GPS, A-GPS, GLONASS, Beidou, SUPL

USB

Micro-USB 2.0

USB OTG

Yes

3.5mm jack

Yes

IR blaster

SIM

1× Nano-SIM

Network bands

4G works on all four carriers — no 5G

Radio bands decide whether this phone sees MTN, Glo, Airtel or 9mobile towers — and how strong the signal holds indoors.

M MTN

4G works · no 5G No B20 or B7 — weaker indoor signal, and slower speeds where the network is busy.

Works

A Airtel

4G full · no 5G

Full

G Glo

4G works No B28 — signal can get weak indoors and outside the big cities.

Works

9 9mobile

4G full

Full

The bands Nigerian networks use

B3 main band

M A G 9

B7 extra speed

B20 indoor reach

B28 indoor reach

n78 the 5G band

M A

The dots show which network uses each band. ✓ means this phone has it, ✗ means it doesn't.

All reported bands

2G BC0, B2, B3, B5, B8

3G B1, B2, B5, B8

4G B1, B2, B3, B5, B8

Build & Design

2 g · 7.4 mm

Height

154.5 mm

Width

74.8 mm

Thickness

7.4 mm

Weight

2 g

Sensors

Fingerprint (under display, optical) · accelerometer · proximity · compass

Sensors

Fingerprint (under display, optical), accelerometer, proximity, compass

Images and battery life estimates from GSMArena

How it stacks up against the rest.

A few phones around the same price, so you can see what this one does better and what it gives up.

Apple iPhone XS

Trades blows 2 wins 3 losses

Better display tech

Super AMOLED vs OLED panel · 6.28″ vs 5.8″ screen · Tradeoff: 1080 × 2280 vs 1125 × 2436 resolution

20% larger battery capacity

3,200 mAh vs 2,658 mAh battery

Lower benchmark score

144k vs 691k AnTuTu · Entry-level vs Mid-range tier

Less stable camera

No OIS vs OIS · — vs Telephoto · OIS · 1080p @ 30 fps vs 4K @ 60 fps video

No NFC

No NFC vs NFC

Full comparison

Samsung Galaxy S9

Loses on most 1 win 4 losses

Starts with more storage

128 GB vs 64 GB baseline

Lower benchmark score

144k vs 416k AnTuTu · Entry-level vs Lower mid-range tier

Less stable camera

No OIS vs OIS · 1080p @ 30 fps vs 4K @ 60 fps video · 12 MP · f/1.8 vs 12 MP · f/1.5 main

No NFC

No NFC vs NFC

Less protected

None vs IP68 protection

Full comparison

Where to buy

We don't have any listings for this phone yet. Try searching on Konga or Jiji.

Search on Konga Search on Jiji

Similar Phones

How each one compares to the vivo X21 UD.

Older flagship

vivo X21 UD

Full specifications

Display

Performance

Software & updates

Camera

Battery

Memory

Connectivity

Network bands

The bands Nigerian networks use

All reported bands

Build & Design

Sensors

How it stacks up against the rest.

Apple iPhone XS

Samsung Galaxy S9

Where to buy

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