Motorola Droid 4 :: 32 GB Micro SD Corrupt?

"Do 32 Gb micro SD cards actually work reliably in DROID4?"I just switched carriers and my son and I ended up both with DROID4 phones and 32 Gb micro SD cards (SANdisk). On the first day, I experienced several freezes of my phone when doing things which used the SD card. In particular, taking pictures and sending some pictures via text (well, MMS) message. By freeze, I mean the screen would go blank but if someone texted me, the phone will still buzz but nothing I could do short of power cycling (power + volume down for 10 seconds) would make the phone respond again.

The other issue I had is I connected a USB cable from a windows 7 laptop to the phone. The phone showed up as drives E, F, and G. E had some motorola software, F, was the phone internal storage and G was the micro SD card. I tried to copy a folder containing some pictures and music from my old phone over. After the first 2 out of a few hundred files copied, windows explorer stopped responding and the phone was frozen too. Waited for hours and it never came back. So, reboot phone, reboot computer. Phone says SD card is bad and I need to format it. So I did. Tried again and got the same results. Then I tried taking the card out of the phone and putting in the computer with the USB adapter that came with the card. Computer says card is corrupt and needs formatting. So... format on the computer. Then I copied all the pictures and music over that I wanted. No problems. Put the card back in the phone. Phone says card is corrupt and needs formatting. Told it to format and the phone froze again.So after getting frustrated I tried putting an old 8 Gb card in the phone after formatting on the computer (FAT32). I was able to connect phone to computer with USB and copy all my files over to the SD card, no problems. Haven't had any more issues. That made me think that perhaps I just had a bad 32 Gb card so I called verizon and asked them to send a replacement which is supposedly in the mail.

That all consumed a day. After all that my son starts taking pictures on his identical phone. And... he starts getting some freezes on his phone. This leads me to ask the question "do 32 Gb micro SD cards actually work on DROID4?". Related to this, what allocation size do folks use if they format the card on a PC before putting in this phone?I really don't have time/energy to keep messing with the phone but would like the larger storage. However I am forced to wonder if these phones just don't play well with 32 Gb cards as I find the chances of both my son and I getting bad new in the box cards to be unlikely.