An ebay search for GrapheneOS, https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2047675.m570.l1313&_nkw=+GrapheneOS&_sacat=0
Compatible with Android apps. Has no google apps or services. You can install apkpure installer and then it’s easy install of any app in the apkpure store, https://apkpure.com/. They have the parler app. In fact, they have most apps that are in the google play store.
Graphene is only compatible with the Pixel line of phones made by/for google. Good kick in the nuts to google to use their phones but not have one single byte of google code on it.
We have a cheap ZTE chinaphone that updates broke on so we’re 3-4 OS updates behind.
Your link goes to an article that has a link to volla kickstarter but it didn’t go anywhere and was cancelled, https://www.kickstarter.com/projects/volla/volla-phone-freedom-through-simplicity-and-security
If you want a brand new phone and don’t mind not being able to install Android apps, this is your best bet, https://puri.sm/products/librem-5/
Librem 5 $799
Librem 5 USA, $2999
“”” Librem 5 USA, a premium version of the Librem 5 phone that focuses on security by design and privacy protection by default with a secure supply chain and electronics Made in USA. Outfitted with hardware kill switches and specially designed hardware, you are in control of the flow of information. “””
Still has all the basics; call, text, camera, docs, web browser, files etc.
List of apps; https://tracker.pureos.net/w/pureos/mobile_optimized_apps/
My wife uses fb messenger to communicate with co-workers and supervisors. She also has a paycheck app. She uses facebook games on the phone. No Librem 5 for us. I’m going to make the swap to a Pixel 3 or 4 with GrapheneOS. That way she can use her Android apps. She has the phone most of the time anyway. I’ll grab it if I’m going on a trip to somewhere further than the grocery store. Tractor Supply for instance is a half a day round trip. We live in a rural area.