Redmi note 9 pro vs a31 July 8, 2019 16 32 64 128 Redmi note 9 pro vs samsung a31 Galaxy a31 vs redmi note 9 pro Xiaomi redmi note 9 pro vs samsung a31 Oppo a31 vs redmi note 9 pro Redmi note 9 vs a31 Redmi note 9 pro vs redmi 9a