How can I export contact groups? When I export my Android phone's contacts via a VCF file, it seems the contact groups are not indicated in the VCF (and are thus lost if I only import that file).
I see a lot of apps for exporting and importing contacts, but none whose name suggests it will export my contact groups as well.
My questions:

Is there a way for me to export my contacts together with the contact groups?
Is there a way for me to export just my contact groups (i.e. which contact belongs to which group)?
Can I import just-contact-groups &quot;onto&quot; a set of contacts without contact groups (the result of a previous import-export without contact groups)?

Notes:

I don't have a Google account (and won't get one).
In case it matters - the phone from which I'm exporting is a Xiaomi RedMi 3S (Android 6.0.1, MIUI 10).
This question is related, but I don't care about exporting to a VCF specifically; and Android has changed over the years; and the answer there regards a Google account.
This answer is based on beeshyams's comment.

Download &amp; install the SA Contacts Lite application; it is available on places where you don't need an account, e.g. via APKPure.com.
Start the app.
In Settings:
3.1 enable Export All Fields.
3.2 Disable Export Photos.
3.3 Enable Merge Duplicates.
Click Export, then Start.
A format selection dialog will come up. Enable Backup and disable everything else; press Next.
An account selection dialog will come up (= the account whose contacts you want to export). Typically you'll want to enable just the default account. Press Next.
Select the range of contacts to exprot - probably all of them, so just press Next.
Wait for the app while it's `preparing to export contacte
Select the destination for the export - typically just a file on the device's storage somewhere.
Patiently wait for the duplicate merge and actual export to occur. I have no idea why it takes so much time, given how there's so little data.
Choose a way to save the output file; &quot;SD Card&quot; is safe, but there are also options to send it to your Dropbox/Box/Google Drive account or to email you the file.
Ensure the output file is actually placed at/sent to your chosen location.

Then, you can import your group associations as described in discussed in this question.