Default swap file question

They say using a swap file will degrade your sdcard now my question is the g2 doesn't have an external sd card does it have an internal sd card or just split the memory into separate patron partitions one for system and one for sd card and if so will or still degrade it using a swap file
Thanks Rob
Rocking Cloudy's G3 ROM with simple kernel on my G2 now referred to as my g3 mini
Clean ROM and elementalx kernel on nexus 7
Lg g3 running stock rooted with xposed
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