ViewSonic is entering the smartphone market with its ViewPhone 3. The Android 2.3, 3.5-inch handset is far from a speed demon — it's powered by 800MHz ARM 11 processor and 512MB of RAM — but interestingly it does have two SIM slots.
ViewSonic ViewPhone 3: dual SIM cards, Android 2.3, coming in March for $250 | The Verge
ViewSonic ViewPhone 3: dual SIM cards, Android 2.3, coming in March for $250 | The Verge