How to fully back up a phone's content to a PC, possibly for restoring on a similar phone I have an LG X-charge phone whose screen is broken, but still functional. I purchased a replacement screen module, but before going ahead on the "open heart surgery", I want to fully back it up. I have another X-charge which is not in use.

I'd like to make a backup on my PC and restore it to the fixed phone, if necessary, or the new phone, if the first one dies.

Can I transfer all of the content of the broken phone to the other one? By "all" I mean all media files, messages history, call history, applications, etc. IOW, make a full, restoreable, copy (to whatever extent possible) of the broken phone.

Also, it will be great to be able to access data from the backup (images, messages) on my PC.

Oh, yeah - and preferably, this should be a free solution.
LG provides different Software (or maybe just different names)
- LG-Bridge
- LG PC Suite
- LG Mobile Switch
- LG ANDROID BACKUP  

For experts also there is LGUP flash tool which may shipped with qualcomm factory loader, with this you may able to create/restore full partition dump, root the device without data loss, or install TWRP via EDL mode