Compare Mobile Phones Side-by-Side

The OnePlus Ace 7 Pro looks like the more ambitious phone here. The jump from a 120Hz to 185Hz display is not something everyone will fully appreciate, but for fast scrolling and high-refresh gaming, it gives the Ace 7 Pro the clear edge. The much bigger difference is battery capacity: 9000mAh versus 5000mAh is massive, and that alone makes the Ace 7 Pro feel like the safer pick for heavy users.

The OnePlus Ace 4 is not weak — it has the same screen size, the same 12GB of RAM, and a perfectly respectable 120Hz display. But based on these specs, it feels like the more standard option, while the Ace 7 Pro is built for people who push their phone harder and want more endurance.

Unless the Ace 4 is significantly cheaper, the Ace 7 Pro is the one I’d lean toward. Its battery advantage is too large to ignore, and the faster display gives it a more premium feel.