How do I export all contacts (names and phone numbers) to a text file on SD card offline? How do I export all contacts (phone, SIM) with phone numbers to a text file on SD card? Without Google, without connected computer, without network. Just save everything to a text file.
It is function integrated into build-in Contacts app.


Open Contacts
Switch to "Contacts" tab
Press the tree-dots button at the bottom
"Import/Export"
Export to storage
Check all checkboxes
Check file like 00002.vcf


This is a vCard file. One can manually open it in a text editor and search for contact names and phone numbers even if no special program for vCard is installed.