SMARTCASH SUPPORT PORTAL

Default Location

open your wallet -> help -> debug window -> datadir

check what it says there

Windows

Go to Start -> Run (or press WinKey+R) and run this:

%APPDATA%\smartcash

SmartCash's data folder will open. For most users, this is the following locations: 

C:\Users\YourUserName\Appdata\Roaming\smartcash 

"AppData" and "Application data" are hidden by default.

You can also store SmartCash data files in any other drive or folder.

If you have already downloaded the data then you will have to move the data to the new folder. If you want to store them in D:\SmartCashData then click on "Properties" of a shortcut to smartcash-qt.exe and add -datadir=D:\SmartCashData at the end as an example:

"C:\Program Files\SmartCash\smartcash-qt.exe" -datadir=d:\SmartCashData

Start SmartCash, now you will see all the files are created in the new data directory.

Linux

By default SmartCash will put its data here:

~/.smartcash/

(or just copy and paste my commands below)

cd ~/.smartcash/

You need to do a "ls -a" to see directories that start with a dot.

If that's not it, you can do a search like this:

find / -name wallet.dat -print 2>/dev/null

Mac

By default SmartCash will put its data here:

~/Library/Application Support/smartcash/

   Oper finder ==> Press combine: Shift +Command+G==> input ~/Library/Application Support/smartcash

P/s: some Mac system will hidden file and need to config tho show it

follow this guide 

https://ianlunn.co.uk/articles/quickly-showhide-hidden-files-mac-os-x-mavericks/