Where is the best place or platform to resell a iPhone 16 that is totally brand new?

Carousell?

Mistermobile?

The neighbour mobile shops

1) Sell as soon as possible - the price will drop as time goes. The price is also dependent on several factors like the color, whether it's a local set (or import etc.), warranty remaining etc.

2) Check carousell / mobile shops - a lot la - you can check the mobile shops on carousell too. I sometimes check - https://www.carousell.sg/u/gadgetaffair/ - just chat with them.

3) The price won't be closed to official selling price coz logically if one wants to buy from official Apple shop - saving $100-$200 by buying from carousell/mobile shop is not worth the risk compared to the price the iphone itself. Unless you are selling to someone who hasn't researched enough/urgent to get phone.