Actually i had placed an add to sell my mobile in olx but no one respond as well eventually one of the scammer ask my mobile number to chat with me in whatsapp regarding phone details and i gave my number to him after few seconds he started chating with me and asked my mail id and bank account details but i did not share my details with him because i realise that he is a cheater so please dont trust these kind of messages and please dont share your details with anyone.