Ques. I want to have an earphone which works with laptop plus mobile phone but I am confused whether one will work with another? Please help.
Ans. Any headphones with an inbuilt mic and having only a single output/input jack will work will with your phone. But the only problem will be that the mic will not work when connected to the laptop (will work on some Lenovo laptops) if your laptop has an inbuilt mic then not a problem.
Some examples: Philips SHE3595BK/00 Headset http://www.flipkart.com/item/ACCDCUJ8SM6WHSTH
Nokia WH-208 In-the-ear Headset http://www.flipkart.com/item/ACCDK2G5PGREPWBS
Sony MDR-EX110AP/BQE EX Monitor In-the-ear Headset http://www.flipkart.com/item/ACCDNGPRKHFWPFAN
Do remember that sometimes the Headphones of competing mobile brands like Samsung and nokia do not work with each other so be advised to read reviews on flipkart before buying anyone to be sure of compatibility.