Compare Mobile Phones Side-by-Side

The OnePlus Ace 7 Pro is the stronger phone on the numbers that matter most day to day. Its larger 6.78-inch display with a 185Hz refresh rate should feel smoother than the Nokia’s already-fast 144Hz panel, and the extra RAM gives it more breathing room for multitasking and heavier apps. The biggest gap is battery: 9000mAh versus 5000mAh is not a small difference, and that alone makes the OnePlus much easier to recommend for gaming, travel, or long days away from a charger.

The Nokia X400 5G is not weak, especially with a 144Hz display, Qualcomm hardware, and 8GB of RAM, but it feels like the more modest choice here. Unless it is priced much lower or you specifically prefer Nokia, the Ace 7 Pro looks like the phone with more longevity and fewer compromises. Based on these specs, OnePlus has the clearer advantage.