# Why Rooting Still Matters in 2025: A Power User's Perspective

Source: https://blog.ferstar.org/en/posts/why-rooting-still-matters-in-2025/





> I am not a native English speaker; this article was translated by AI.

Android has matured significantly, but for power users, rooting remains a prerequisite for total control over the hardware and software experience. Here is why rooting still matters in 2025.

---

## 1. Bleeding Edge Kernel Features
Manufacturers often use older, stable kernels. Rooting allows me to leverage modern features:
- **BBRv2 Congestion Control**: Significantly improves speeds on cellular networks (noticeable on China Unicom 4G/5G).
- **F2FS Optimization**: Paired with UFS 3.1, it offers noticeable gains in random I/O performance.
- **Zstd Compressed ZRAM**: Offers ~20% better compression than lz4.
- **Custom CPU Schedulers**: Schedulers like EAS (Energy Aware Scheduling) can reduce daily power consumption by ~15%.

I've compiled custom kernels for `xaga` and `RMX3888` devices, enabling many features disabled by OEMs. KernelSU has proven to be more stable than Magisk for these scenarios.

**Tools**: Franco Kernel Manager / UKMM

## 2. Killing "Cloud Control" and OEM Bloat
Manufacturers often push unwanted "optimizations" or ads silently via cloud control. My approach:

```bash
# Freeze system updates
pm disable com.xxx.ota

# Block cloud control domains via hosts
echo "127.0.0.1 cloud.manufacturer.com" >> /system/etc/hosts
```

**Essential Modules**: CorePatch (bypass signature verification), Shamiko (hide root).

## 3. Bypassing Ecosystem Locks
Some banking apps or region-locked games restrict access based on device models. Technically, this involves hooking the `android.os.Build` class:

```java
XposedHelpers.setStaticObjectField(Build.class, "MODEL", "SM-G9980");
XposedHelpers.setStaticObjectField(Build.class, "MANUFACTURER", "samsung");
```

**Modules**: Device Faker / Hide My Applist.

## 4. Automated Bookkeeping (The LSPosed Way)
Accessibility services and OCR are too unstable for automated bookkeeping. LSPosed hooks are the gold standard—hooking directly into the payment success callback:

```java
// Hooking WeChat Pay success callback
findAndHookMethod("com.tencent.mm.plugin.wallet...", "onPaySuccess", 
    new XC_MethodHook() {
        protected void afterHookedMethod(MethodHookParam param) {
            // Extract amount and merchant info directly into the database
            saveTransaction(param);
        }
    });
```

It achieves 100% accuracy and never gets killed by the system because it runs within the app process itself.

**Reference**: AutoAccounting (Open Source).

## 5. System-Wide Ad Blocking
Beyond DNS-based blocking, root allows for:
- **AdAway**: The classic hosts-based blocker.
- **ReVanced**: The essential YouTube and streaming app enhancer.
- **iptables Rules**: Forcefully rejecting ad-domain traffic at the kernel level.

```bash
# Reject ad domains via iptables
iptables -A OUTPUT -d ad.xxx.com -j REJECT
```

## 6. Underclocking and Undervolting for Longevity
Every SoC is different. On my Snapdragon 8 Gen2:

| Metric | Factory Settings | Undervolted | Improvement |
|:---|:---|:---|:---|
| Big Core | 3.2GHz @ 1.05V | 3.2GHz @ 0.98V (-70mV) | ~18% Battery Life |
| GPU | 680MHz @ 0.90V | 680MHz @ 0.85V (-50mV) | 2-3°C Cooler |

**Method**: Modify the kernel device tree voltage table or use Franco Kernel Manager for real-time tuning.

## 7. Bypassing Thermal Throttling & Charging Mods

### Thermal Control
OEMs are often too conservative, throttling at 45°C. I increase the threshold to 55°C:

```bash
# Modify thermal trip points
echo 55000 > /sys/class/thermal/thermal_zone0/trip_point_0_temp
```

### Smart Charging
For devices always plugged in, I limit the charging current and capacity:

```bash
# Limit charging current to 2A
echo 2000000 > /sys/class/power_supply/battery/constant_charge_current_max

# Stop charging at 80%
echo 80 > /sys/class/power_supply/battery/charge_control_limit
```

**Module**: ACC (Advanced Charging Controller).

## 8. Termux: The Full Linux Experience
Without root, Termux is isolated. With root, it becomes a complete mobile server:

```bash
# Install a full Debian distro
proot-distro install debian

# Network packet analysis
tcpdump -i wlan0 -w capture.pcap

# Flash custom kernels directly
dd if=/sdcard/custom_boot.img of=/dev/block/by-name/boot
```

---

## Conclusion
In 2025, rooting is still a necessity for me. It’s about **performance extraction, privacy protection, and functional expansion**. While there are risks like warranty loss or app detection, the journey of tuning the system is where the learning and fun reside.

My strategy: **Keep the primary device conservative, but never stop tinkering with the secondary ones.**