Redmi 15 4G vs Vivo iQOO Z9 (India)

The Redmi 15 4G (2025) runs on the Qualcomm Snapdragon 685, while the Vivo iQOO Z9 (India) (2024) runs on the MediaTek Dimensity 7200. By overall MobileRank rating, the Redmi 15 4G leads — 32/100 vs 30/100 (a 2-point difference). Key differences: the Redmi 15 4G has the bigger battery (7000 mAh vs 5000); the Redmi 15 4G has NFC for contactless payments, the Vivo iQOO Z9 (India) doesn't; the Vivo iQOO Z9 (India) is noticeably lighter (188g vs 224g).

The Redmi 15 4G edges out the Vivo iQOO Z9 (India) by just 2 points — the two devices are very close in overall level.
Profile comparison
Category scores
Redmi 15 4G
Performance 0
Display 100
Camera 24
Battery 53
Design 20
Value for money 100
Vivo iQOO Z9 (India)
Performance 0
Display 100
Camera 27
Battery 42
Design 65
Value for money 55
What makes Redmi 15 4G better?
  • Bigger battery: 7000 vs 5000 mAh
  • Higher refresh rate: 144Hz vs 120Hz

  • Longer battery life (53/100 vs 42/100)
  • Better value for money (100/100 vs 55/100)
What makes Vivo iQOO Z9 (India) better?
  • Faster charging: 44W vs 33W
  • Lighter: 188g vs 224g

  • Better camera (27/100 vs 24/100)
  • Better design/ergonomics (65/100 vs 20/100)
Comparison verdict

Comparing the Redmi 15 4G vs the Vivo iQOO Z9 (India), the Redmi 15 4G scores 2 points higher (32/100 vs 30/100). In the "battery" category, the Redmi 15 4G leads (53/100 vs 42/100). In the "value for money" category, the Redmi 15 4G leads (100/100 vs 55/100). In the "performance" category, both devices are on the same level — 0/100. In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Vivo iQOO Z9 (India) and the Redmi 15 4G are nearly equal (27/100 vs 24/100). In the "battery" category, the Redmi 15 4G is a bit better (53/100 vs 42/100). In the "design" category, the Vivo iQOO Z9 (India) significantly outperforms the Redmi 15 4G (65/100 vs 20/100). In the "value for money" category, the Redmi 15 4G significantly outperforms the Vivo iQOO Z9 (India) (100/100 vs 55/100).

Redmi 15 4G: The Redmi 15 4G is a better fit for budget-conscious buyers.
Vivo iQOO Z9 (India): The Vivo iQOO Z9 (India) is a better fit for everyday use.
Specs comparison
Specification Redmi 15 4G Vivo iQOO Z9 (India)
Processor Qualcomm Snapdragon 685 MediaTek Dimensity 7200
AnTuTu 467392
Geekbench Single 466
Geekbench Multi 1396
Display 6.9" IPS LCD 6.7" AMOLED
Resolution 1080x2340 1080x2400
Refresh rate 144 Hz 120 Hz
Battery 7000 mAh 5000 mAh
Charging 33W 44W
Main camera 50 MP 50 MP
Front camera 8 MP 16 MP
RAM 4GB / 6GB / 8GB 8GB
Storage 128GB / 256GB 128GB / 256GB
OS Android 15, HyperOS 2 Android 14, Funtouch 14
Brightness (peak) 1800 nits
NFC yes no
Protection IP64 IP54
Dimensions 171.1×82.1×8.6 mm 163.2×75.8×7.8 mm
Weight 224 g 188 g
Price $135
Camera comparison
Redmi 15 4G
  • Main: 50MP f/f/1.8
  • Front: 8MP
24
camera
Vivo iQOO Z9 (India)
  • Main: 50MP f/f/1.8
  • Front: 16MP
27
camera
Display comparison
Redmi 15 4G
  • 6.9" IPS LCD
  • Resolution: 1080x2340
  • Refresh rate: 144 Hz
100
display
Vivo iQOO Z9 (India)
  • 6.7" AMOLED
  • Resolution: 1080x2400
  • Refresh rate: 120 Hz
100
display
Battery and charging
Redmi 15 4G
  • 7000 mAh
  • Wired: 33W
  • No wireless charging
53
battery
Vivo iQOO Z9 (India)
  • 5000 mAh
  • Wired: 44W
  • No wireless charging
42
battery
Benchmarks
Price and availability
Redmi 15 4G
$135
Vivo iQOO Z9 (India)
Price unknown
Detailed category analysis
performance

In the "performance" category, both devices are on the same level — 0/100.

display

In the "display" category, both devices are on the same level — 100/100.

camera

In the "camera" category, the Vivo iQOO Z9 (India) and the Redmi 15 4G are nearly equal (27/100 vs 24/100).

battery

In the "battery" category, the Redmi 15 4G is a bit better (53/100 vs 42/100).

design

In the "design" category, the Vivo iQOO Z9 (India) significantly outperforms the Redmi 15 4G (65/100 vs 20/100).

value for money

In the "value for money" category, the Redmi 15 4G significantly outperforms the Vivo iQOO Z9 (India) (100/100 vs 55/100).

Frequently asked questions
Which is better: the Redmi 15 4G or the Vivo iQOO Z9 (India)?

The Redmi 15 4G edges out the Vivo iQOO Z9 (India) by just 2 points — the two devices are very close in overall level.

What is the rating of the Redmi 15 4G and the Vivo iQOO Z9 (India)?

The Redmi 15 4G has a MobileRank rating of 32/100, the Vivo iQOO Z9 (India) — 30/100.

Should you choose the Redmi 15 4G over the Vivo iQOO Z9 (India)?

The Redmi 15 4G is a better fit for budget-conscious buyers. The Vivo iQOO Z9 (India) is a better fit for everyday use.