The better solution is do not use a phone. Using a phone requires using a mobile browser. One of the worst "apps" of them all. If it is Firefox, then one needs to block a ton of telemetry. It is constantly trying to determine if it can reach the internet and then trying to access "location.services.mozilla.org" amongst numerous other domains. Mozilla partners with Google. They share data.
Not true. Sent from desktop Firefox on my GNU/Linux phone.