Nothing compares to the Punkt MP01 and MP02 IMO. I've had the MP01 for years and it's fantastic, the only issue has been with service and I imagine that would be resolved with the MP02 and 4g. https://www.punkt.ch/en/products/mp02-4g-mobile-phone/
There's also the Lightphone and forthcoming Lightphone II.
That being said, these won't really address privacy concerns per se. They don't support signal or other encrypted messaging (the lightphone II may in the future???). So the only way they would be more 'private' would be due to the fact that you'll use your phone for less and in so doing, share less data. Your texts and calls will still be pretty visible if that's a concern.
There's also the Lightphone and forthcoming Lightphone II.
That being said, these won't really address privacy concerns per se. They don't support signal or other encrypted messaging (the lightphone II may in the future???). So the only way they would be more 'private' would be due to the fact that you'll use your phone for less and in so doing, share less data. Your texts and calls will still be pretty visible if that's a concern.