What is obd Port and should I install one in my lodgy stepway rxz. And what is the advantages and disadvantages of obd device. Which one should I install and also I want to lock and unlock my car with my mobile so how I can do it....

What is obd Port and should I install one in my lodgy stepway rxz. And what is the advantages and disadvantages of obd device. Which one should I install and also I want to lock and unlock my car with my mobile so how I can do it.

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