Porting ios game to android

Hi. I have to port existing ios Unity game to Android platform.
Now I need to make estimate how long will it take to port.
Game uses some resources from StreamingAssets folder.
Could you tell me what problems can I get during porting?
How long does it usually take to make such port?
I know it’s really depends on kind of the game but could you share your experience?

I believe it really depends on what you’ve done in your game.

Here, we made an application for iOS and it was running without any modification on Android.

The main problem we met : it’s easy to test performances on iOS because there are only a few different devices. But there are a lot of different Android devices, and there are on average less powerfull as iOS devices.

In our case, our game wasn’t running as smoothly on most Android devices that it did on iOS devices.