Smartphones have become integral to modern life, with over 65% of people in developing areas owning one. They consolidate many essential functions like phone calls, email, schedules and contacts into a single device. While smartphones help people organize their personal and professional lives, some argue they have become compulsory with those without one seen as "not cool". However, smartphones continue to evolve and have seen a 24% rise in sales, showing how important and popular they have become worldwide as an all-in-one tool.