ASUS Zenfone 9 is without question a flagship in the true sense of the word, a top phone not only when we analyze it as a compact one, but in general. ASUS Zenfone 9 comes with an updated design, with the most powerful current chipset in the Android world and with better autonomy. Otherwise, the dedicated photo sensor with optical zoom is still missing, as well as wireless charging and the memory card slot, the last element being truly exotic for the vast majority of top smartphones.