Pretty much what the title says. I'm a portrait photographer and when I export photos from lightroom and/or photoshop and download them on my phone from google drive, the photos on phone appear warmer and a bit more saturated even than they were on lightroom/ photoshop. I have the export settings set to sRGB so I'm not sure what's wrong?
Your iPhone isn't perfectly matched to your computer. I'm not an expert, so I can't tell you how to calibrate either the iPhone or the computer monitor so that they will match perfectly. Maybe a web search will give you some ideas.