Hi @electrotounes Seems to be a Tunisian site you have linked. Anyway the A12 is certainly more powerful and faster,uses greater energy efficiency and the camera has a bit better resolution. The A12 is also the only one to support Fast charging. A comparison here https://nanoreview.net/en/phone-compare/samsung-galaxy-a12-vs-samsung-galaxy-a02
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My Device- S21 Ultra 5G ( SM-998B/DS ) CSC= BTU , 12GB/256GB
One Ui 4.0,Android 12 Official Version.