ARM-based CPUs dominate smartphones due to their energy efficiency and compact design tailored for mobile use. Virtually all modern smartphones—from Android flagships to iPhones—rely on ARM architecture processors rather than x86 types common in desktops or laptops.

Why ARM Rules Smartphones

ARM CPUs excel in low-power consumption, crucial for battery life in always-on devices. Manufacturers like Qualcomm (Snapdragon), Apple (A-series), MediaTek (Dimensity), and Samsung (Exynos) all build on ARM cores such as Cortex-X or Cortex-A series. This setup delivers high performance for gaming, AI tasks, and multitasking while sipping power—unlike power-hungry x86 chips.

Imagine your phone as a marathon runner: ARM keeps it sprinting through a full day without needing a recharge pit stop, powering everything from camera processing to app launches seamlessly.

Top Examples in 2025 Devices

Here's a quick rundown of leading ARM-based mobile CPUs as of early 2026:

Processor| Maker| Key Cores| Found In
---|---|---|---
Snapdragon 8 Gen 3| Qualcomm| 1x Cortex-X4 (3.3GHz) + A720/A520| Galaxy S24, OnePlus 12 1
Dimensity 9300| MediaTek| 1x+3x Cortex-X4 + A720| Various mid-to-flagship Androids 1
Exynos 2400| Samsung| 1x Cortex-X4 + A720/A520 (10-core)| Galaxy S24 series (some regions) 1
Tensor G4| Google| 1x Cortex-X4 + A720/A520| Pixel 9 lineup 1
Apple A18 (est.)| Apple| Custom ARMv9| iPhone 16/17 models 3

These octa-core (or more) setups balance speed and efficiency, with ARM's licensing model letting companies tweak for specific needs.

Other Types? Rare Exceptions

x86 CPUs (like Intel/AMD) are almost never in phones—too bulky and inefficient for pockets. RISC-V is emerging experimentally (e.g., some Chinese prototypes), but ARM holds over 99% market share. No mainstream phone uses CISC-dominant chips; it's all ARM for that perfect mobile blend.

Quick Market Trends

  • Flagships : Snapdragon leads Android premium segment; Apple customizes for iOS optimization.
  • Mid-range : Snapdragon 6/7 Gen or Dimensity 8xxx series keep costs low.
  • 2025 Shift : Expect more AI-focused NPU integration in ARM chips amid rising on-device processing demands.

TL;DR : ARM CPUs are by far the most likely (and only practical) type in smartphones, powering top devices with efficiency and power.

Information gathered from public forums or data available on the internet and portrayed here.