A mobile phone is a communication device, often also called as cell phone. It is a device mainly used for voice communication. Worlds first ever mobile phone was demonstrated way back in 1973, by the Motorola. That mobile phone weighed around 2 kilograms. Since then mobile phones have evolved in technology and shapes. They have become smaller, slimmer and more useful. Today mobile phones are available in various shapes and sizes, Phones having wide range of advance functions and large computing abilities are called smart phones. They have an edge over other conventional mobile phones, which are used only for voice communication. Of course mobile phones are a boon given to the number of useful purposes they are used for like internet, voice or video chat, Today every mobile phone user has a social media account, which he manages from his mobile phone. It helps him/her to remain connected to family and friends as well as other dignitaries like politicians, actors, cricketers etc. But despite all the advantages, mobile phones could sometimes be annoying too. The use of mobile phones for various purposes. Also, every form that we fill today has a mandatory column asking to provide the phone number. Today the number of a common mobile phone user is available with many marketing agencies whose main aim is to sell their product. This loop hole in privacy has led to unwanted and People get annoying calls from insurance agents, marketing executives, etc, trying to sell their products to the mobile phone user, who is not at all interested. In the end it would be more appropriate to say that mobile phones are both a boon and a bane. They are a boon when used appropriately and within limits but could be bane when they are used with mala fide intentions. Even a useful gadget as a mobile phone could be well annoying when it is used with the bad intention of deceiving someone, trailing him/her inappropriately on social media and other accounts. It is one of the prime significance of mobile phones. You can instantly connected to the person you want to convey an important message or to have a casual chat. Distance too does not matter and even people situated on two extremes of world can be connected within seconds. There are a variety of applications available on mobile phone which helps the students to learn and evolve their skills. there are a number of online free tutorials available for the children and other willing audience. Use of mobile phones for various purposes has resulted in compromising the privacy of the user. Today anyone could easily access the information like where you live, who are your friends and family, what is your business, where is your house etc; by just easily browsing through your social media account.