Friends,
Just to make you cautious :
DJI Mavic Mini drone requires a smartphone based app to fly it (DJI FLY) . However, this app is not installable in any smartphone. it requires a 64 bit android version 6 or above to fly it. Without checking with your phone, it is useless to buy the drone, unless ready to spend another 15 - 20 k on a new phone.
However, a third party app (Litchi) is available on payment basis which can also fly the drone..This is installable in normal 32 bit android phones.