What is the fine-grained topic of the following text: The Galaxy A20 packs in a 6.4-inch HD+ Infinity-V Super AMOLED display, powered by Exynos 7884 Octa-Core processor, coupled with 3GB RAM, paired with 32GB expandable storage, runs on Samsung One UI on top of Android Pie and is backed by a 4,000mAh battery with 15W fast charging. Only return the topic.
Samsung Galaxy A20 Specifications