How to get a 250 gb sd card working

[AC Question]

Ok so I have a HTC One A9 and recently got a 250 gb micro SD card but my phone won't accept it how do I get my phone to accept it

 

[ManiacJoe]

Check the requirements of your phone.
Most likely the card is too big.

 

[Rukbat]

Thge HTC spoecs call for it to accept a "32/64GB" card, but I suspect that was written before SDXC was finalized, and the phone may not be able to use any card larger than 32GB. (If it can use a 64GB card, it should be able to use any card up to 2TB, since 64GB-2TB use the same technology and format. HTC may have anticipated this one incorrectly.)