Introduction Dear friends, recall the starting era of basic cell phones or mobile phones when we were excited and  happy to get  voice calls or SMS from   family members, relatives, friends, business partners, etc. during our movement because wireless cellular phones were really a boon for communication when we were away from landline phones. Advancement in technology and our ambitions made a step further when we got the smart phone in our hand.  With the help of smartphones, we can do much more than voice and SMS. Now we are connected worldwide with the internet, social media, GPS, financial online transactions, e-commerce platforms, fitness & other apps, and much more. Now with the introduction of Artificial Intelligence (AI)  in smartphones, this small device has become a good advisor for people. In each and every field and round the clock, smartphones are our well-wishers which  are alerting us if weather is abnormal, if the phone is lost, if your heartbeat , sleep pattern,  im