Please download REDtoolbox, install and license with the key provided.

https://www.redcatch.at/redtoolbox/#download

1) Start REDtoolbox and select "PPK & Geotagging"

2) Choose 360 camera add-on as device

3) In Image tab, choose the folder containing the images 

4) after successfully loaded, the number and time span of the images are shown

5) Now choose ROVER tab, to select the *.000 logfile (recorded on Smartphone)

6) Once loaded a success message is displayed and the file displayed

7) Switch to Output tab and select your preferred output type. After selection, hit RUN

8) Check the output by switching trough Statistics and Map

9) Open the output folder and open the *_raw.txt file with an editor