my PC always converts 9:16 videos to 16:9

[The Boomers !!!]

my PC always converts 9:16 videos to 16:9 when I import from my android or iPhone - how do I prevent this? I attatched a file my phone says is 1080wide x 1920high in 1080p but after a copy & paste or drag & drop my pc changes the properties of the file to be 1920wide x 1080high in 1080p and doesn't appear properly in Premier Pro for editing.

[Peru Bob]

Please use the free MediaInfo and post a screenshot of the properties of your media in tree view:
https://mediaarea.net/en/MediaInfo

Many users are having issues with VFR. If the file is variable frame rate, use Handbrake to convert to constant frame rate:
https://handbrake.fr/downloads.php
Here is a tutorial:
https://www.youtube.com/watch?time_continue=34&v=xlvxgVREX-Y

Shutter Encoder may also be used to convert to Constant Frame Rate:
https://www.shutterencoder.com/en/

[The Boomers !!!]

I'm sorry, this does not explain my problem of importing a file in it's original vertical format in to my PC. Also I'm 3 weeks into learning all this stuff & do not know how to post all the things you ask & and it would take a few days to learn. I just took 2 different  files my phones (both Pixel 4 & iPhone 12) said was 1080wide x 1920high but copied into PC Win 10 & PC properties now said it was 1920wide by 1080high. I then dragged them into Premier Pro & now Premier Pto says they are correct 1080wide x 1920high after changing the sequence settings to 1080wide x 1920high. So I have a solution. Premier pro takes my original 9:16 phone file from my PC copy of 16:9 & reverts it to original 9:16 I atteched below a screenshot of the original in iphone & the PC properties after I copied into my PC. Thanks so much for the reply.

[Ann Bens]

You phone footage might be filmed in protrait but the file is most likely set to landscape.

Post screenshot of clip in MediaInfo in treeview on forum.

[The Boomers !!! · Accepted solution]

Here are the iPhone screenshot & after a copy & paste in to PC, PC properies screenshot. I just took 2 different  files my phones (both Pixel 4 & iPhone 12) said was 1080wide x 1920high but copied into PC Win 10 & PC properties now said it was 1920wide by 1080high. I then dragged them into Premier Pro & now Premier Pto says they are correct 1080wide x 1920high after changing the sequence settings to 1080wide x 1920high. So I have a solution. Thanks for your reply.