If you have multiple mobile devices, like smartphones, tablet PCs, and some kinds of other gadgets, of course, the presence of storage media is very important. There are several types of memory cards that can be used, such as microSD, MMC, and some other media storage. For some types of gadgets, the need for a memory card is very important, where appropriate capacity will provide comfort if you are storing files in large enough quantities. Like for example if you have a tablet PC that supports modern applications, the function of a large enough memory card is needed.
Usually for a few gadgets, the need for adequate memory card is about 16 GB and 32 GB. Both have very adequate capacity if later used for storing some music files and other multimedia, such as video and streaming. But if you have a gadget with features that are not complete, then you can install with some applications, by first installing additional memory via the external port.
But if you do not want to add a memory card for a while, you might be able to choose a gadget that is equipped with sufficient memory card, such as 16 GB, of course, these gadgets have been equipped premises at any time if external port you need additional memory.