I had problems getting my 32GB microSD card to be recognized by my Samsung Core Prime phone (which I think is a great phone dollar for dollar¹) and then resolved the issue.
What I did to resolve the problem:
- Turned off phone
- Removed cover AND battery.
NOTE: When it didn’t work, I hadn’t removed the battery. I don’t know if this was the ultimate resolve, but I did remove the battery on the attempt which worked.
- Finally, I assured the mSD card was fully inserted – all the way.
Through the two differences; removing battery and assuring full insertion, the phone recognized the mSD card upon the next boot. I didn’t need to format or do anything else; the mSD card was completely prepared an ready for use.
Formatting Your MicroSD card
I don’t know about all brands and whether some require formatting, but mine is a PNY 32GB, 90MB/s, 4K Ultra HD, Turbo Performance mSD card. And “No” it didn’t come with flame analyzers – LOL, per the movie “My Cousin Vinny” as can be viewed at IMDB, the Internet Movie DataBase