Burner app uses yer ph 2 call but replaces # with burner #… when u use it, it’s like yer burner called u…
… it’s not VOIP like Nextplus, Textnow, etc
So calling uses cell ntwk, not internet… incoming calls, gotta b fast & press 1, but outgoing, no issues…
TBH, don’t think it’s detectable …
U can get TextNow SIM card & throw it in an old phone…
… cheap burner… but physical phones have risks… can be lost, & wrong person can find them…
I had plan 2 convert old ph 2 bike
GPS, then throw SIM card in it … my burner hidden in plain site… but burner app= way 2 convenient… all my faves numbers hidden behind firewall…