Hello, my relative does not know how to use a computer. She also does not use the internet. She only wants a device that can easily make and receive phone calls. According to her, there is no need of a camera. However, she wants me to install some songs for her. In this case, is 16GB enough? Is it better to buy a 32GB 6s/6splus for her? I recall reading some posts suggesting not to buy the 16GB version. However, I suppose those suggestions are for those who take lots of photos and use the internet, etc.