In re: A recent suggestion doing the rounds on social media that prospective grooms need to seek call record data of ladies before marriage.

Accessing call record data of ladies before marriage could have made sense earlier - mobile phone employees tend to share data for a the right price.

However today, you need WhatsApp records which are very expensive to hack even assuming they were preserved.

Further, one should not forget that many ladies change their mobile numbers when their parents start looking for grooms.