Mobile handsets are going through revolutionary changes every day. New models are becoming obsolete within no time when new ones come in. So I think it is not wise to invest in mobile phones nowadays. I have seen people going for second hand mobile sets to cope up with latest trends. But is it wise to use them? There can be many issues: We never know how secure the device is. If it’s fitted with a tracking mechanism or something else your security could be compromised. It is very important in the present scenario as financial transactions are being done through smartphones. We never know the actual source of a second hand mobile; it may be stolen or already part of a crime. So you could be part of a police case unknowingly. Do you use second hand mobile phones?