Is vivov3 better or x20 better?

Introduction of main parameters of vivo V3:

Operating system: Funtouch OS 2.5. 1 (based on Android5. 1).

Screen: 5.0-inch TFT display with resolution of 1280*720.

Photographing: 800W pixel front FF camera, 1300W PDAF rear camera.

Processor: Qualcomm Snapdragon? 64-bit (MSM8939) eight nuclear 1.5GHz processor

Appearance size:143.6× 71× 7.5mm.

Battery capacity: 2600mAh, non-removable battery.

Weight:138g

Network Type: Dual Nano Card

Network Support: Mobile 2G, 3G, 4G, Unicom 2G

Body memory: 3G RAM+ 16G ROM.

Extended storage: maximum support 128G Micro SD card.

Video recording: MP4 (maximum support for 720P recording)

Connection: WiFi/WAPI, bluetooth, GPS, USB, OTG.

Sensors: gravity sensor, proximity sensor, photosensitive sensor, etc.

X20 Introduction of main parameters:

Operating system: Funtouch OS 3.2 (based on Android7. 1. 1).

Screen: 6.0 1 inch Super AMOLED full-screen with resolution of 2 160* 1080.

Photographing: 2x1200 w (24 million photosensitive units) +500W rear camera; Front 2x1200w (24 million photosensitive units)+soft light.

Processor: Qualcomm Snapdragon? 660 eight nuclear 2.2GHz 64-bit processor

Appearance size:155.85mm * 75.15mm * 7.2mm.

Battery capacity: 3245mAh, non-removable battery.

Weight:159g

SIM card specification: dual Nano card

Network Support: Mobile Unicom Telecom 2G, 3G, 4G

Body memory: 4g RAM+64grom (128G for X20 Ultimate Edition)

Extended storage: up to 256G memory expansion is supported.

Connection: WiFi/WAPI, bluetooth, GPS, USB, OTG.

Sensors: gravity sensor, proximity sensor, photosensitive sensor, electronic compass, gyroscope, etc.