I want to buy a suitable mobile phone now, and I am infatuated with BBK vivo S3 and Dowell iEva D3. I don't know which performance is better, ask for guidance!

Mobile phone function:

Support frequency band 2g: GSM 850/900/1800/1900 MHz; 3G:WCDMA2 100

Network connection support: 3G network HSDPA 7.2 Mbps；; ; GPRS/2G network edge

Operating system: Android OS 2.3.5 ROM: 512MB RAM: 512MB CPU frequency: 800MHZ.

Optional colors: snow white/fog gray (other colors to be determined)

Inches:115.8x62x11.8mm (standard height).

Single screen: 3.5-inch capacitive touch screen, 3.5-inch display HVGA, 320×480.

Battery: BK-B-46 capacity: 1500 mah.

Standby/talk time (depending on network quality)

Talk time: GSM≤8 hours, WCDMA≤6 hours.

Standby time: GSM≤4 10 hour WCDMA≤4 15 hour.

MP3 playback time: external playback: ≤20 hours; Headphones: ≤30 hours.

Main camera: 500W pixel sub-camera: 30W pixel TF card: can support up to 32G.

Built-in third-party software: social communication (QQ20 1 1, Sina Weibo, Renren), music communication (QQ music), game communication (Zuma season), movie communication (Youku, Sohu video), reading communication (ViVa reading), information communication (Netease News) and iReader (Palm).

Functions: dual card dual standby, HS USB 2.0, support for Wi-Fi/WAPI, GPS and AGPS, automatic screen locking, pattern locking, SIM card locking, menu upgrade, account management, Baidu search, SMS encryption, SMS group sending, SMS font size setting, Bluetooth (2. 1), gravity acceleration sensor application, light sensing control, infrared proximity sensing. Incoming call firewall-unlimited number), synchronization assistant, energy-saving assistant, flashlight, incoming call photo, theme change, holiday lock changer wallpaper (similar to holiday wallpaper change), total recall, number attribution query (supporting online update), weather query, FM radio, e-mail, STK value-added, TF card interface, camera (supporting autofocus and flashing LOMO special effects), music player and alarm clock.