Can cellphone towers triangulation work in 3D or is it 2D only (e.g. longitude/latitude)


So,

Most of us understand that cellphone towers are constantly listening for cellphone broadcasts and we also know that triangulation is possible (even retro-actively, as connection records are permanent) by basically using the different signal strengths from your 3 nearest cellphone towers.

Q: Does triangulation, in 2020, allow for 3 dimensional (height) location tracking? (E.g. if your device is located on the ground floor or at the 84th floor)

My guess is no, but I would not be surprised if I’m missing something.