vivo iQOO Z3 vs iQOO Z7 (China): A Detailed Comparison

The vivo iQOO series consistently delivers impressive value in the budget smartphone market. Today, we're pitting two contenders against each other: the iQOO Z3 and the newer iQOO Z7 (China). Which one offers the best bang for your buck?
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🏆 Quick Verdict

The iQOO Z7 (China) is the clear winner thanks to its significantly faster charging (120W vs 55W), a more efficient chipset, and likely camera improvements. While the Z3 remains a solid option, the Z7's advancements make it a compelling upgrade for most users.

PHONES
Phone Names vivo iQOO Z3 vivo iQOO Z7 (China)
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 2100HSDPA 850 / 900 / 2100
4G bands1, 3, 4, 5, 8, 38, 40, 41 - India1, 3, 5, 8, 28, 34, 38, 39, 40, 41
5G bands77, 78 SA/NSA - India1, 5, 8, 28, 41, 77, 78 SA/NSA
SpeedHSPA, LTE, 5GHSPA, LTE, 5G
TechnologyGSM / CDMA / HSPA / CDMA2000 / LTE / 5GGSM / CDMA / HSPA / CDMA2000 / LTE / 5G
 1, 28, 41, 77, 78 SA/NSA - ChinaCDMA2000 1x
Launch
Announced2021, March 252023, March 20
StatusAvailable. Released 2021, April 01Available. Released 2023, March 24
Body
Dimensions164 x 75.3 x 8.5 mm (6.46 x 2.96 x 0.33 in)164.6 x 75.8 x 8.8 mm (6.48 x 2.98 x 0.35 in)
SIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight185.5 g (6.56 oz)201.5 g (7.13 oz)
Display
Resolution1080 x 2408 pixels, 20:9 ratio (~401 ppi density)1080 x 2388 pixels (~395 ppi density)
Size6.58 inches, 104.3 cm2 (~84.5% screen-to-body ratio)6.64 inches, 106.8 cm2 (~85.6% screen-to-body ratio)
TypeIPS LCD, HDR10, 120HzIPS LCD, 120Hz, HDR10
Platform
CPUOcta-core (1x2.8 GHz Kryo 475 Prime & 1x2.4 GHz Kryo 475 Gold & 6x1.8 GHz Kryo 475 Silver)Octa-core (1x2.7 GHz Cortex-A78 & 3x2.4 GHz Cortex-A78 & 4x1.8 GHz Cortex-A55)
ChipsetQualcomm SDM768 Snapdragon 768G 5G (7 nm)Qualcomm Snapdragon 782G (6 nm)
GPUAdreno 620Adreno 642L
OSAndroid 11, Funtouch 11.1 (International), OriginOS 1.0 for iQOO (China)Android 13, OriginOS 3
Memory
Card slotmicroSDXC (uses shared SIM slot)No
Internal128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
 UFS 2.2UFS 2.2
Main Camera
Dual-64 MP, f/1.8, (wide), 1/1.97", 0.7µm, PDAF, OIS Auxiliary lens
FeaturesLED flash, HDR, panoramaDual-LED dual-tone flash, HDR, panorama
Single16 MP, f/2.0, (wide)16 MP, f/2.5, (wide)
Triple64 MP, f/1.8, 26mm (wide), 1/1.97", 0.7µm, PDAF 8 MP, f/2.2, 120˚, 16mm (ultrawide), 1/4.0", 1.12µm 2 MP (macro)-
Video4K@30/60fps, 1080p@30/60fps, gyro-EIS4K@30fps, 1080p@30fps
Selfie camera
FeaturesHDR-
Single16 MP, f/2.0, (wide)16 MP, f/2.5, (wide)
Video1080p@30fps1080p@30fps
Sound
3.5mm jack YesYes
35mm jackYesYes
Loudspeaker YesYes
Comms
Bluetooth5.1, A2DP, LE, aptX HD5.2, A2DP, LE, aptX HD
NFCNoYes
PositioningGPS, GLONASS, GALILEO, BDSGPS, GLONASS, GALILEO, BDS
RadioNoNo
USBUSB Type-C, OTGUSB Type-C 2.0, OTG
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Features
SensorsFingerprint (side-mounted), accelerometer, gyro, proximity, compassFingerprint (side-mounted), accelerometer, gyro, proximity, compass
Battery
Charging55W wired120W wired
Type4400 mAh5000 mAh
Misc
ColorsAce Black, Cyber Blue, SilverBlack, Blue, Orange
ModelsV2073AV2270A
PriceAbout 220 EURAbout 220 EUR

vivo iQOO Z3

  • Reliable performance
  • Good value for money
  • Decent display
  • 5G connectivity

  • Slower charging
  • Older chipset
  • Potentially less impressive camera

vivo iQOO Z7 (China)

  • Significantly faster charging (120W)
  • More efficient and powerful chipset (Snapdragon 782G)
  • Likely improved camera performance
  • Modern design

  • Potentially slightly higher price
  • Availability may be limited outside of China

Display Comparison

Both phones likely feature a similar 6.44-inch AMOLED display with a 120Hz refresh rate, offering smooth visuals. However, the Z7 might have slightly improved color accuracy or brightness due to newer panel technology. Expect FHD+ resolution on both.

Camera Comparison

While specific camera specs are needed, the iQOO Z7 (China) is expected to have improvements in image processing and sensor technology. The 782G's ISP (Image Signal Processor) is likely more advanced, leading to better low-light performance and overall image quality. Both likely feature a 64MP main camera.

Performance

The Snapdragon 782G in the iQOO Z7 (China) is a noticeable upgrade over the Snapdragon 768G in the iQOO Z3. The 782G's newer architecture and 6nm process offer better efficiency and performance, resulting in smoother multitasking and gaming. Expect better thermal management on the Z7 as well.

Battery Life

The iQOO Z7 (China)'s 120W charging is a game-changer. It can likely charge from 0% to 100% in under 20 minutes, a significant advantage over the Z3's 55W charging. Battery capacity is likely similar (around 4500-5000mAh) on both devices, meaning the Z7 offers significantly faster top-ups.

Buying Guide

Who should buy the vivo iQOO Z3? Those on a very tight budget who prioritize a reliable, if slightly older, processor and don't need ultra-fast charging. Who should buy the vivo iQOO Z7 (China)? Anyone seeking a modern, fast-charging, and likely better-performing phone within a similar price range.

Frequently Asked Questions

❓ Is the iQOO Z7 (China) worth the upgrade from the iQOO Z3?
Yes, the iQOO Z7 (China) offers significant improvements in charging speed, performance, and likely camera quality, making it a worthwhile upgrade if your budget allows.
❓ Where can I buy the iQOO Z7 (China)?
The iQOO Z7 (China) is primarily available in China. International availability may be limited, but you might find it through online retailers specializing in imported devices.