This is dual sim as I imagine it. Based on the previous other Amazon Customer Reviews I ventured after I was very unhappy with the samsungduos B7722i (the dual sim function was very impractical) to the Cynus T 1, although I was excited because of the unknown producer name, making me because expected. But all respect, so the dual sim makes fun. And the phone, speak smartphone features are really great for the price. I'm very satisfied and would buy it immediately. Still looking for the possibility of the speed dial keys, but that's all what I miss degrees. Otherwise, great handling and menu navigation.