What is the fine-grained topic of the following text: Google Pixel 2 to feature a 5-inch Full HD Display whereas Pixel 2 XL has a six-inch, QHD+ display in an 18:9 aspect ratio both Powered by Qualcomm Snapdragon 835 Processor.4GB of RAM, either 64GB or 128GB of storage, and 12-megapixel primary rear cameras, along with front-firing stereo speakers. Only return the topic.
Google Pixel 2 and Pixel 2 XL specifications