To send media / file / audio to contacts, please
follow below steps:
Open imo
> open the chat box of your selected contact
> Click the "+" button
> Gallery / File
> select media / audio / file and send.
By the way, if you want to save media / file
sent by contacts, you can long press on the
selected files and download. They will be saved
in your phone folder.
Tips:
Please backup important chats and files time
to time. Imo keeps chat history for last 90 days.