What is a reliable inexpensive device or method I can use to record conversations & messages off of cell phones? This is for consensual legitimate record keeping & not bugging conversations. Thanks.
Many cell phones already have the capability to record conversations (certainly my old Nokia phone from 4 years ago did), as long as they have sufficient memory storage. I can find several such applications for Android, and there are probably several iPhone apps for that task.
The recordings can be dumped to computer for processing/archive.
Si
From the cell phone, you could also conference into a service like freeconferencecall.com which will record the conversation for you.