SenseCAP S2105 sensor used as a portable on-site extraction data sensor

I intend to use a single SenseCAP S2105 as a portable sensor that I can move from place to place and extract data while on-site for short periods of time. I don’t need it to be left in place permanently transmitting data through a network.

Do I still need to connect the sensor to a LoRaWAN network? Is it enough to just connect it to my phone via bluetooth to extract the data on-site using the app?

Thanks ahead!