Backup of mobile phone text messages generates bak files. How do I browse them?

The bak files backed up by the program generally cannot be browsed directly. If you really want to see it, you can try text software, Notepad, UE, etc., but there is little hope.

Generally, backup files are imported through the original generation program. That is to say, what software did you use to back up the data? You can then import it through that software and view it.