Agreed. It would be strange for a card to impact the boot sequence. But since it replicated on New phone that is pretty telling. Where did you get the card? My sandisk ultra 64gb I've have for probably 2+ years. Used on my moto bionic and now on the Note 3. Never an issue. Got mine from amazon.
Be very wary of cards from ebay. To many stories like yours
I got my card from Best Buy when I got my Galaxy S4. Not weird files on the card, basically what was on my S4, as I just took it from the S4 and inserted on the N3. And it was working fine on the S4.
Pictures, family movies, and school documents (pdf, .txt) and some apps moved to sd card.
Of course I moved the apps from my previous S4 to phone so my sd card had no apps, but I didn't format it. Don't think that's the problem, probably the card.
I found an interesting review on Amazon by SkinCare CEO : " To all those who purchased this card due to all the great reviews.... and then used it in a Galaxy S4 (GS4) smartphone for storage, the solution to the problem is not one you can solve without returning the card to SanDisk for a replacement under warranty. Believe me I tried everything that the Google searches returned as solutions... formatting as exFAT, formatting in the GS4 then copying data to the card while in the phone etc.... nothing worked... and so now please stop pulling out your hair and hopefully you will get the same result which I hope to get soon (just RMA'd and will send it back tomorrow for a free replacement under warranty).
The problem (As confirmed from the SanDisk customer support rep when I asked specifically asked him):
- When used in the GS4, this card will unmount itself inadvertently (may be true only for cards manufactured before the ROM patch described below was implemented in manufacturing). This can cause the data to become corrupt (luckily was not my experience) and / or can be very frustrating as most of us are saving 13 MP camera pictures to the card (or MP4 movies that stop in the middle of the movie) and it unmounts when you view the picture in the gallery or worse, right when you take the picture (this was the issue I experienced).
- SanDisk knows about this issue. Again, SANDISK KNOWS ABOUT THE ISSUE AND WILL REPLACE YOUR CARD. Call them (info below) and they WILL take care of it under warranty. They have a good name for a reason and they want to keep it. (sorry SanDisk about the 1 star, but I thought it was the way to get the message out to those searching for a solution)
- The customer rep told me that SanDisk tried to work with Samsung to resolve the issue but Samsung refused to acknowledge a problem exists with this card and some of their phones (especially their flagship GS4 phones).
- The customer rep told me that to their knowledge the card works fine in regular cameras (not Samsung GS4 phones with cameras, obviously) and even worked fine in some phones from HTC etc. that could accommodate the 64 GB cards. Hence the 5 star ratings from others.
- The solution SanDisk came up with was to write a patch into the ROM of the card itself to specifically address the issue on Samsung GS4 phones (and maybe other Samsung phones like the GS3). I was assured that the new card I would get would work flawlessly. will see in about 3 weeks.
- I purchased my card from Amazon June 2013, so the ones currently being manufactured and the one I should get will have the new patch. However, as SanDisk manufactures in batches (like most of the industry), old batches of "unpatched" cards obviously exist in warehouses.
- I asked about a software patch I could download and was told it's not possible... hence the "hard coded patch" in the card's ROM
So... how to take care of the problem....
After speaking with the SanDisk US customer support (link and info below), this is what I learned and did.
Go to the SanDisk site
1)
SanDisk Contact Information
2) call consumer products support (this is the US no.) 1-866-SANDISK (726-3475)
3) Tell them that the card is unmounting itself in your GS4 (I assume this is also a problem experienced by GS3 owners too)
4) They will then confirm your information, approve your return (10-15 min approval window by mine was basically instantaneously), and then send you emails with a UPS return label and instructions.
5) BTW, they also asked if I had a magnifying glass to ID the serial no. on the card, but I didn't and couldn't read it myself (those numbers are super small printed into the plastic... don't believe me? take a look yourself.) I told the rep I couldn't read them and he said no problem, they would process without the serial no. I assume this is because they send you a new replacement card only when they receive your card you send in. Makes sense.
Well, that's it. Problem (hopefully) solved. Let's see in 2-3 weeks. The rep was super nice about it and seemed like they were all too familiar with the problem. KUDOS TO SANDISK FOR TAKING CARE OF IT... however, it would be nice if there was some type of communication / notice of the issue besides Google info sources, forums etc. I spent hours, maybe a couple of days total hours worth, thinking it was an issue with my phone / my data transfer. oh well, that's how it goes.
I really hope that this review helps some of you out there with the same problem as me. GOOD LUCK!!