Do you know how to use Panorama Feature on your smartphone? If you don't, I suggest to learn it immediately.
It's a useful feature in capturing landscape. Like you can see on the above picture of Klara Beach, Lampung Province, Indonesia.
The landscape is too wide to be handled by common camera lens, even the wider smartphone camera. Just make sure there is nothing that block the camera and keep the handling hand as steady as possible to avoid blur.
The camera will take care the rest.