Compare
realme NARZO 100x 5G vs vivo Y21 5G
Same price. Here is what actually separates them.
Which one should you buy?
Same price: both start at ₹20,999 in India, so this comes down to what you get for it.
- The realme NARZO 100x 5G has the bigger battery: 8,000 mAh against 6,500 mAh.
- The realme NARZO 100x 5G has the better screen on paper: smoother (144Hz against 120Hz).
- The Y21 5G is the lighter phone: 209 g against 224 g.
Which to buy
Get the realme NARZO 100x 5G for the bigger battery and the smoother screen. Get the Y21 5G for the lighter build.
Every spec, lined up
Better on paper
Display
Specrealme NARZO 100x 5GY21 5G
Size
6.8 inches
6.74 inches
Panel
LCD
LCD
Resolution
1570 x 720 (HD+)
1600 x 720 (HD+) (better)
Refresh rate
144Hz (better)
120Hz
Peak brightness
1,200 nits
1,200 nits
Protection
Panda 1681
Not listed
Performance
Specrealme NARZO 100x 5GY21 5G
Chipset
MediaTek Dimensity 6300
Dimensity 6300
CPU
Octa-core, up to 2.4GHz
Octa-core, up to 2.4GHz
GPU
Mali-G57 MC2
Not listed
RAM
4GB, 6GB
4GB, 6GB
Storage
64GB, 128GB, 256GB
64GB, 128GB
Software
realme UI
OriginOS 6, Android 16
Camera
Specrealme NARZO 100x 5GY21 5G
Rear cameras
50MP main
50MP main (f/1.8) + 0.08MP auxiliary (f/3.0)
Front camera
8MP (f/2.0)
5MP (f/2.2)
Video
1080p at 30fps (rear), 1080p at 30fps (front)
Not listed
Battery
Specrealme NARZO 100x 5GY21 5G
Battery
8,000 mAh (better)
6,500 mAh
Wired charging
45W (better)
44W
Build and connectivity
Specrealme NARZO 100x 5GY21 5G
Network
5G, 4G LTE
5G, 4G
SIM
Dual nano SIM
Dual nano SIM (hybrid microSD slot)
Wi-Fi and Bluetooth
Wi-Fi 5, Bluetooth 5.3
Wi-Fi (2.4GHz, 5GHz), Bluetooth 5.4
NFC
No
No
Dust and water
IP65
IP65
Weight
224 g
209 g (better)
Thickness
8.8 mm
8.39 mm (better)
Colours
Flash Orange, Midnight Black
Champagne Gold, Midnight Blue
Availability
Specrealme NARZO 100x 5GY21 5G
Launch in India
15 Jul 2026
25 Mar 2026
Status
On sale
On sale
Versions and prices
realme NARZO 100x 5G
- 4GB + 64GB₹20,999
- 4GB + 128GB₹22,999
- 6GB + 128GB₹25,999
- 6GB + 256GB₹28,999
Y21 5G
- 4GB + 64GB₹20,999
- 4GB + 128GB₹23,999
- 6GB + 128GB₹27,999
Prices in India as we last checked them. Sales and bank offers change them often, so check before you buy.
