“It’s basically a texting app. You’ll need cell service to get Signal, so just use a prepaid SIM bought with cash. After that, don’t use cell again. Only use it over public Wi-Fi. Also download a VPN from Private Internet Access. Pay for it with a gift card you buy with cash. Keep Wi-Fi turned off when you are not actively using it. In fact, keep the phone turned off when you are not using it.
