Beyond carrier opt-outs (which often have loopholes), you can physically block tracking by toggling airplane mode with WiFi enabled when possible, or using a signal-blocking Faraday bag for your phone during sensitive travel.

> during sensitive travel.

if your location data is continuous, but happens to "switch off" when you're doing something sensitive, then it's like a blaring alarm that this is the period of time that is "sus". It gives any sort of LEA/feds a time period to investigate, and might even be the evidence they need for a search warrant.

Therefore, you should not just hide your signal only when you are doing sensitive things. You should periodically hide it going to groceries, going to the shops etc. You might want to do it regularly, as part of your daily life. Camouflage only works if it cannot be used to tell apart your activities.