The Google Pixel 4 was announced in 2019, October 15 With 5.7 inches, 80.7 cm2 (~79.8% screen-to-body ratio) P-OLED, 90Hz, HDR, Powered by Qualcomm SM8150 Snapdragon 855 (7 nm) and running Android 10, upgradable to Android 13, the device delivered smooth performance and multitasking capabilities. while the Li-Po 2800 mAh, non-removable ensured long-lasting usage.