For users who want a good budget selfie phone, the A57 is a good option.
OPPO A57 Full Review
Do cameras lose value? - Quora
Why are OnePlus smartphones so cheap compared to Samsung Galaxy and Nexus? - Quora
Oppo Mobile Phone: 10 Best Oppo Mobile Phones in 2024 - Get Unmatched Performance at Unbeatable Value for Money - The Economic Times
With a microscopic camera, comes microscopic disappointments – Oppo F21 Pro
Oppo A57 5G - External Reviews
Oppo: Oppo A57 review: Scores big on camera performance, style - The Economic Times
When is Oppo Find X launching in India and what might be the estimated price? - Quora
OPPO A57 OPPO Pakistan
Full article: The analytics of product-design requirements using dynamic internet data: application to Chinese smartphone market
Oppo A57 Mobile Phone Memory Cards
OPPO A57 ( 64 GB Storage, 4 GB RAM ) Online at Best Price On
OPPO A57 Dual SIM Glowing Black 4GB RAM 64GB 4G LTE - International Version
Is the Itel P55 5G phone worth buying? - Quora
OPPO A57 Review