Android Developer Options: The Hidden Settings Menu and What It Does

Published 2026-10-16 · Marion Phone Repair

Android has an entire settings menu that is hidden by default — Developer Options. Originally intended for app developers to test and debug software, it contains settings that are genuinely useful for regular users: speeding up animations to make the phone feel faster, keeping the screen on while charging, forcing apps to use the GPU for smoother performance, enabling USB debugging for file transfers and screen mirroring, and more. Here is how to turn it on and which settings are worth changing.

How to enable Developer Options

The process is the same on virtually every Android phone, though the exact menu path varies slightly by manufacturer:

Stock Android and Google Pixel

1. Open Settings
2. Tap About Phone
3. Find Build Number
4. Tap Build Number 7 times. After the first few taps, you will see a countdown (You are now 3 steps away from being a developer)
5. Enter your PIN or password when prompted
6. You will see a message: You are now a developer
7. Go back to the main Settings screen — Developer Options now appears under System

Samsung Galaxy

1. Open Settings
2. Tap About Phone, then Software Information
3. Tap Build Number 7 times
4. Enter your PIN or password
5. Developer Options appears at the bottom of the main Settings screen (or under Settings, Developer Options)

Other manufacturers

The build number is always in Settings, About Phone (sometimes under Software Information or Version). Tap it 7 times. On Xiaomi, OnePlus, and Oppo phones, the Developer Options menu appears under Settings, Additional Settings or Settings, System. On Huawei, it appears under Settings, System and Updates.

Settings worth changing

Animation scale (make the phone feel faster)

This is the most popular Developer Options tweak. Android uses animations for every transition — opening an app, going back to the home screen, switching between apps. By default, these animations play at 1x speed. Reducing them makes everything feel significantly snappier:

1. In Developer Options, find these three settings: Window Animation Scale, Transition Animation Scale, and Animator Duration Scale
2. Change all three from 1x to 0.5x
3. Every animation now plays at double speed. The phone is not actually faster — it is doing the same work — but the reduced animation time makes every action feel more responsive
4. You can also set them to Animation Off (0x) to eliminate animations entirely, but this can make the interface feel jarring. 0.5x is the sweet spot for most people

Stay Awake (screen on while charging)

When enabled, the screen never turns off while the phone is plugged in and charging. This is useful when you are using the phone as a desk clock, a recipe display while cooking, a music controller, or any situation where you want to see the screen without repeatedly tapping it. The setting only applies while charging — unplugged, the normal screen timeout still works.

USB debugging

USB debugging allows your phone to communicate with a computer through a USB cable using the Android Debug Bridge (ADB). You need this enabled for:

• Screen mirroring tools: Apps like scrcpy (free, open source) let you mirror and control your phone screen on your computer. Requires USB debugging
• Advanced file transfers: ADB push and pull commands can transfer files to areas of the phone's storage that the normal file transfer mode cannot access
• Sideloading apps: Installing APK files from your computer onto the phone via ADB
• Recovery and repair: If your phone gets stuck in a boot loop or has a software problem, ADB can be used to push updates, clear caches, or reflash the system from a computer

When you first connect the phone to a computer with USB debugging on, the phone displays a prompt asking you to authorize that specific computer. Always check the fingerprint matches and only authorize computers you trust. USB debugging gives the connected computer significant access to your phone.

Force 4x MSAA

MSAA (Multisample Anti-Aliasing) smooths jagged edges in games and OpenGL ES apps. Enabling this forces 4x anti-aliasing in apps that use OpenGL ES 2.0, which can make games look smoother and reduce the staircase effect on diagonal lines and edges. The trade-off is higher GPU usage, which means more battery drain during gaming and potentially lower frame rates on older or less powerful phones. On flagship phones with powerful GPUs, the impact is usually minimal.

Show surface updates (debugging tool)

This setting flashes areas of the screen that are being redrawn. It is meant for developers optimizing their apps, but it can help you understand why your phone seems slow — if large portions of the screen are constantly being redrawn (flashing constantly), an app or a widget is doing unnecessary work and consuming battery and CPU resources. Turn this off after checking — the constant flashing is distracting during normal use.

Background process limit

By default, Android manages background processes automatically, keeping recently used apps in memory and killing them when memory is needed. The Background Process Limit setting lets you manually control how many apps stay in the background. Options range from Standard Limit (Android manages it) to No Background Processes (apps are killed immediately when you switch away). This is useful on phones with limited RAM (3 or 4 GB) where too many background apps cause the phone to slow down. However, setting it too aggressively means apps take longer to resume because they have to restart from scratch instead of loading from memory.

Default USB Configuration

When you plug your phone into a computer, Android defaults to Charging Only mode — you have to pull down the notification and change it to File Transfer every time. In Developer Options, you can change the Default USB Configuration to File Transfer (MTP), so the phone automatically enters file transfer mode when connected to a computer. This is a small convenience that saves a few taps every time you connect to transfer files.

Settings to leave alone

Developer Options also contains settings that can cause problems if changed without understanding what they do:

• OEM Unlocking: Allows the bootloader to be unlocked, which is a prerequisite for installing custom ROMs. Enabling this weakens the security model of the phone and can void your warranty. Do not enable unless you specifically intend to unlock the bootloader
• Mock Location: Allows apps to fake your GPS location. This is for testing location-based apps during development. Enabling it for regular use (to fake your location in games or social apps) can get your accounts flagged or banned
• Aggressive Wi-Fi to Mobile Data Handover: Forces faster switching from Wi-Fi to mobile data, but can cause unnecessary mobile data usage and increased battery drain
• Logger buffer sizes: Increasing these consumes more RAM for log storage. Leave at default unless you are actively debugging a specific problem

How to disable Developer Options

If you want to hide the menu again:

1. Open Settings, Developer Options (or Settings, System, Developer Options)
2. Toggle the switch at the top to Off
3. This disables all Developer Options settings and hides the menu. Your changes (like animation scale) revert to defaults when you turn it off
4. To re-enable later, tap Build Number 7 times again — your previous settings are not saved

Phone settings help in Marion

If your Android phone feels slow and you want help optimizing performance settings, or if you enabled a Developer Options setting that is causing unexpected behavior (screen flashing, apps crashing, USB not connecting properly), Marion Phone Repair can diagnose the issue and configure your phone's settings for the best balance of performance and battery life.