In this generation, not at all. iPhone 6 SOC is very old for today's high graphics games like Genshin Impact etc & But you can still play some low end games. But wouldn't suggest IPhone for gaming.

The game also scales beautifully. On iPhone 11, Call of Duty: Mobile takes full advantage of the A13 Bionic chip, using a customized color-grading algorithm to deliver richer colors and deeper contrast.

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