1. Essential or required attributes, qualities, or components that something must have to function properly or meet specific requirements
The necessary features of a good smartphone include a reliable battery and clear display.
As características necessárias de um bom smartphone incluem bateria confiável e display nítido.
2. Fundamental elements or specifications that are indispensable for a particular purpose
Security and user-friendly interface are necessary features for any banking application.
Segurança e interface amigável são características necessárias para qualquer aplicação bancária.