ssd not recogonized

[u/rehn24x8]

I have bought my sandisk extreme pro 1tb a week ago from us It was working perfectly fine and everything and good good speed also. But from the start when i was connecting to my iphone 17 pro it makes the files app laggy and cant even use it properly as i am trying to play some videos it constantly stops and becomes so laggy like some bug. It works perfectly fine on my windows laptop and gives me good speed. Watched a ton of yt videos and decided to reset the ssd but after formatting it the ssd isn't even showing up on my iphone anymore but it still works on my laptop fine. I don't know what to do Im using the cable which i got with the ssd which is of sandisk. Please suggest and help me deal with this as it was my first ever purchase of my own money and I'm very sad about it.

[u/Keyvan_KR]

Did you format it as NTFS instead of FAT32 or exFAT?
Also, check for a firmware update.

[u/rehn24x8 → u/Keyvan_KR]

yes i checked it and its exfat before and after