Most mobile devices and tablets that are of any count state that the limit to their sd storage is 32GB...but on a few of those they can and do read sd cards that are in fact larger than this.  I would suggest anyone that thinks they need space beyond those stated limits of their device do a quick search on line for their particular MAKE and Model cellphone or tablet to see what size SD's others have been successful at using. Once you have found out and that you can in fact use such an SD...go and search online for HDD Raw Copy Tool from HDD GURU...and it will allow you to make an image of your old SD to apply to the new SD and/or even make a backup of one's SD.  Since the SD drives are different sizes when this image is applied to the larger...you will need to use a partition manager, such as MiniTool partition wizard (which is free for home use) and resize the partition of the larger drive.  This will allow you to take advantage of the whole drive space. I love the upgrade and added space...can't go wrong with this price for a class 10 SD of this size.