In your opinion, what is the ideal smartphone that was made up until now? And what makes it perfect?

The Samsung Galaxy S7 Edge is awasome Smartphone i ever seen. it has great and amazing curved display and also with bended screen like a flexible plate inside and outside.Premium designGreat CameraFinegerPrint MagnetCartonish UI

i think the iPhone the best ,and the most important thing about it is the security 

I have experience using smartphones with android and iOS operating system, respectively. Each have different quality that only available to each flagship. I am currently using Sony Xperia Z5 Premium. It was a great phone in my opinion.  In my opinion, The ideal smartphone is different on each consumers. As long as it caters the user needs and requirements. It should be durable have long battery life and processor power depends on the user usage. 

In my opinion, I will say , OnePlus 3T is good , the cost also low, and samsun galaxy S7 i s good

htc 10 and iphone 5s is the best smartphone in my view both have very beautiful design 

Moto G 4 best specifications for the price you pay and its a pretty durable phone. I myself have one

Samsung S7 Edge , first phone to have curved edge screen ,Android OS , finger print , LTE network , back Camera 12 MP & phone is very fast

Samsung galaxy edge (elegent curved design+glass and matel finish)

Smart phone should fullfill customer's expectaions like software, screen size, Storage capacity, Processer speed and battery life. This will be differ from each other models.

In my opinion the best smart phone is that which suites or fulfill your need/ requirements with an ease. for some it's android for some it's ios and for others it can be blackberry. so it totally depends upon your own needs and pocket.  Now a days you shouldn't be smart enough to handle a smart phone it's not meant or made for smart people rather made for every generation till date.