Bringing this post by
@doodles1211 forward:
“A lot of people that have phones, but no cellular service, will use free wifi and download free text apps. Of course they can only text while in the wifi areas.”
TX - TX - Emily Wade, 38, missing after meeting with co-worker, Ennis, Ellis County, 5 Jan 2019
Also, just for reference, here is the article that mentions that Emily uses her phone for texting only:
“Her family says Emily Wade’s bank account hasn’t been touched, that her cell phone, one she only uses for text messaging, hasn’t been used either. They are baffled. So are police and both are asking for the public’s help to bring Emily home.”
Police searching for missing Ennis mother
If it does turn out that Emily’s phone doesn’t have cellular service, wouldn’t it make it difficult (or likely impossible, IMO) to ping it, as the phone wouldn’t be connecting to towers?
They would be able to figure out which WiFi network her phone was connected to at any certain point in time, however, IMO.