Even a FLOSS-only smartphone cannot protect you from all the surveillance concerns, like remote location tracking using Silent SMS: > In Germany in 2010 almost

Even a FLOSS-only smartphone cannot protect you from all the surveillance concerns, like remote location tracking using Silent SMS: > In Germany in 2010 almost half a million "silent SMS" messages were sent by the federal police, customs and the secret service "Verfassungsschutz" (offices for protection of the constitution). These silent messages, also known as "silent TMS", "stealth SMS", "stealth ping" or "Short Message Type 0", are used to locate a person and thus to create a complete movement profile. They do not show up on a display, nor trigger any acoustical signal when received. Their primary purpose was to deliver special services of the network operator to any cell phone. The mobile provider, often at the behest of the police, will capture data such as subscriber identification IMSI. Source: https://en.wikipedia.org/wiki/SMS#Silent_SMS https://en.wikipedia.org/wiki/SMS#Silent_SMS