This should not effect your success to parler. If you use a phone just download a web browser and access that way. It is nearly as easy as using the app. I personally don't mess around with my smart phone and the only reason I have one is to use my smart home. I much prefer to use a REAL COMPUTER. One with a real keyboard where you don't mas three keys at once have a real buttons that go down. Have a nice screen that doesn't black out on you all the time. Have a mouse. It much easier and user friendly to use a desk top.
" This should not effect your success to parler. "
Parler losing their hosting service is not going to Affect your access to Parler?
"Have a nice screen that doesn't black out on you all the time. "
Try a modern phone that doesn't black out as long as it sees your face, or detects hand movement.
I prefer the phone to the desktop now. Only use the desktop when I need the traditional desktop screen layout.
As far as I know, no way to install the app on an un-jailbroken iPhone right now. And jailbreaking isn't what it used to be.