Dimensi

Redmi A3: Tinggi: 168,4 mm, Lebar: 76,3 mm, Ketebalan: 8,3 mm, Bobot: 199 gram

Redmi 12C: Tinggi: 168,76 mm, Lebar: 76,41 mm, Ketebalan: 8.77 mm, Berat: 192 gram

Warna

Redmi A3: Midnight Black, Star Blue

Redmi 12C: Graphite Gray, Ocean Blue

Layar

Redmi A3: Layar 6,71 inci, refresh rate 90 Hz, mendukung Night Mode dan DC dimming

Redmi 12C: Layar Dot Drop HD+, 6,71 inci, Refresh rate 60 Hz

Kamera Belakang

Redmi A3: Kamera 8 MP (f/2,0)
Lensa sekunder (auxiliary lens)

Redmi 12C: Kamera utama 50 MP (f/1.8)
Lensa tambahan QVGA

Kamera Depan

Redmi A3: Kamera 5 MP (f/2,2)

Redmi 12C: Kamera 5 MP (f/2,2)