Having dual SIM card on one mobile phone is not a problem anymore. People who live in Indonesia sometimes has more than one SIM card due to different network signal of each place. One of dual SIM card mobile phone with Android OS is LG Optimus Dual SIM P698.
LG Optimus Dual SIM P698 has some good features :
3G 900/2100 MHz ,GPRS/EDGE
Processor 800 MHz, GPU Adreno 200, Qualcomm MSM7227T chipset