The Testnet HyperOS Theme is one of those rare Xiaomi Themes that instantly changes how your device feels. After testing hundreds of HyperOS Themes, MIUI Themes, and mtz Themes over the past months, this one stood out immediately. The glass-layered lockscreen, the clean icon pack, and the redesigned control center transform your phone into something far more refined than the stock HyperOS Theme experience.
During personal testing on my Xiaomi device, the animations stayed smooth, the battery impact was minimal, and the interface looked exceptionally polished. Testnet feels like a premium blend of iOS elegance and Samsung’s modern One UI softness, without falling into the common trap of overdesigning.
Testnet HyperOS Theme
Most themes try to look like iOS or One UI but fail because they push too many visual elements together. Testnet avoids that mistake. The design focuses on clarity, layering, subtle gradients, and light reflections that resemble iOS26’s glass philosophy. The lockscreen transparency alone makes the device feel high-end.
The internal UI elements are not simply copied; they are adapted to fit HyperOS’s structure. The typography looks crisp against soft backgrounds, the widgets stand out cleanly, and every page transitions smoothly. Testnet is engineered like a premium theme, not a quick mock-up.
What separates it further is the flawless balance between modern aesthetics and usability. You get a bold refresh of your phone’s look without losing functionality. Nothing feels experimental or incomplete.
Read: Latest HyperOS Themes
Key Features Testnet HyperOS Theme
These are the real, tested features — no fluff:
1. iOS26-Inspired Glass Lockscreen
The lockscreen is designed with layered transparency, soft blur, and premium depth effects. Notifications appear clean, and the blur reacts naturally to brightness changes. The result is a lockscreen that feels straight out of an iPhone’s latest update.
2. Fluffy One UI Style Icons
The icon pack blends One UI’s rounded shapes with Testnet’s glossy color palette. Icons are soft yet sharp, evenly sized, and easy to distinguish. They look consistent across system and third-party apps, which most Xiaomi Themes fail to achieve.
3. Redesigned Control Center
The control center gets a refined layout — larger toggles, balanced spacing, and improved visibility. It’s easier to access important tools without clutter. The blur effect behind the control center is especially clean on HyperOS devices.
4. Beautiful, Consistent UI Elements
Menus, backgrounds, quick settings, and notifications share the same design language. The theme avoids mixed styling, giving the entire device a unified identity.
5. Smooth Navigation on HyperOS
Testnet is optimized for HyperOS, meaning animations respond well, and switching between apps stays fluid. No lag spikes or UI distortions appeared during testing.
Read: Best HyperOS Themes
Compatibility
The Testnet HyperOS Theme works on:
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HyperOS (all supported versions)
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MIUI 14 / MIUI 13 (most regions)
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Xiaomi, Redmi, and POCO devices
If you’re using a stock HyperOS ROM, installation through the official Themes Store is the most reliable. If you’re on a custom ROM, the mtz Themes method works flawlessly.
Theme Details
Theme Name: Testnet HyperOS Theme
Designer: mydul
Theme Size: 73 MB
The size may vary slightly depending on your device model and region.
Read: Best Dark Icons HyperOS Theme
Installation Guide (Short, SEO-Friendly)
A) How to Install Testnet HyperOS Theme Through the Official Themes Store (Stock HyperOS & MIUI Devices)
Follow these exact steps:
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Open this page in your browser.
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Tap the Official Theme Store Link provided below.
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The Xiaomi Themes App will open automatically.
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Press Download, then press Apply.
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The Testnet HyperOS Theme will apply instantly.
This is the most stable and recommended installation method for stock HyperOS and MIUI ROMs.
B) How to Install Testnet HyperOS Theme (MTZ) on Custom ROM Devices
If your device runs a custom ROM, use this mtz method:
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Download the MTZ file from the link below.
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Open the Themes app.
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Go to Profile → Import → Select the MTZ file.
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Press Apply to activate the theme.
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Restart your phone (optional, but helps the UI settle smoothly).
This method ensures compatibility even on unsupported regions or ROMs.
Testnet HyperOS Theme Preview
Download Testnet HyperOS Theme (mtz)
| Theme | Testnet |
|---|---|
| Desinger | mydul |
| Apply | Theme Store mtz |
