Compare to

Compare the full technical characteristics of the phone. Side by side specifications.

vivo X21 UD
March 01, 2018	Released:
Android 8.1 (Oreo), Funtouch 4	Operating System:
Black, Ruby Red	Colors:
X21UD A	Models:
4G, 3G, 2G	Network Speed:
Display
6.28 inches, 98.4 cm² (85.2% screen-to-body ratio)	Size:
1080 x 2280 pixels, 19:9 ratio (402 ppi density)	Resolution:
Super AMOLED	Type:
Corning Gorilla Glass 3	Protection:
Body
154.50 mm	Height:
74.80 mm	Width:
7.40 mm	Thickness:
156.20	Weight:
	Foldable:
No	Water Resistant:
Glass front (Gorilla Glass 3), aluminum back, aluminum frame	Material:
Hybrid Dual SIM (Nano-SIM, dual stand-by)	SIM:
Rear Camera
2	Number of Cameras:
12 MP, f/1.8, 1/2.55″, 1.4µm, dual pixel PDAF 5 MP, f/2.4, (depth)	Camera Resolutions:
1080p@30fps	Video Resolution:
LED flash, HDR, panorama	Features:
Front (Selfie) Camera
12 MP, f/2.0, (wide), 1/2.8″, 1.28µm	Camera Resolutions:
1080p@30fps	Video Resolution:
	Features:
Battery
Li-Ion 3200 mAh, non-removable	Battery Capacity:
Fast charging 18W	Charging:
Hardware
Qualcomm SDM660 Snapdragon 660 (14 nm)	Chipset:
Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)	Processor:
Adreno 512	GPU:
128GB 6GB RAM	Memory:
microSDXC (uses shared SIM slot)	Memory Card Slot:
Fingerprint (under display, optical), accelerometer, proximity, compass	Sensors:
FM radio	Radio:
Yes	Audio Jack 3.5 mm:
	Other:
Network & Connectivity
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot	Wi-Fi:
5.0, A2DP, LE	Bluetooth:
microUSB 2.0, USB On-The-Go	USB:
Yes, with A-GPS, GLONASS	GPS:
No	NFC:
LTE / HSPA / CDMA / GSM	Technology:

Phone comparisons Tool | Compare Specs

If you're trying to pick a new phone and feeling overwhelmed by the endless choices out there, Flagship Legends – Compare Phones has your back!
It's basically your personal assistant for smartphone shopping, without all the confusing tech jargon.

Compare phones by brand, model, and release date
Check detailed display info: screen size, resolution, and protection
Explore body specs like dimensions, weight, and materials
Review camera details: number of cameras, megapixels, and video recording
See battery specs: capacity, charging speed, and wireless support
Find hardware specifics: chipset, memory options, and additional features
View connectivity: Wi-Fi, Bluetooth, and network compatibility

You just pick two phones you're interested in, and boom—side-by-side, it clearly lays out all the important stuff like screen size, camera quality, battery life, and even fun extras like water resistance or how good they are for gaming. It also highlights unique features of each phone so you can quickly see what makes each one special. And if you're still unsure, there are easy-to-watch video comparisons and reviews right there to help you make your decision.

+ Read More