UleFone S1 Pro

The internal data storage capacity tells you how much space will be left for your multimedia and files. If your phone's internal memory is under 1GB, you will only have enough space for the most basic necessities needed to run the phone. You will be able to upload a few contacts and calendar events. A larger memory capacity of about 16GB is the bare minimum if you want to use all the features your smartphone offers. If you decide to buy a phone with a 32 or 64GB capacity, you may not even need an extra memory card. 128GB or more allows you to carry hundreds of your favourite MP3 songs with you.