OEM advertising has undergone a rapid transformation. What began with simple preinstalled apps and alternative app stores has evolved into a sophisticated, multi-layered ecosystem of device-integrated ad formats embedded directly into system UI, OEM browsers, search surfaces, and first-party apps. Today, OEM inventory has become a strategic channel for mobile marketers, bridging app discovery, user acquisition, and on-device engagement within the manufacturer’s ecosystem.

From Preloads to Alternative App Stores: The First Generation of OEM Ads

The earliest OEM advertising formats were defined by static factory preloads and basic featuring inside alternative app stores. Preload campaigns placed app icons on the device before a user even turned it on, ensuring high visibility from day one. Industry documentation from Digital Turbine and AppsFlyer describes these placements as “first-touch” formats that positioned an app at the heart of initial device onboarding.

At the same time, major manufacturers launched their own app stores, including Huawei AppGallery, Xiaomi GetApps, and Samsung Galaxy Store. These stores offered early OEM ad formats such as search ads, featured listings, and app-store banners. Although powerful at the time, these formats largely remained siloed within a single storefront.

This era marked the foundation of OEM advertising, but the ecosystem was only beginning to expand.

The Shift to On-Device & Dynamic Formats

As mobile competition grew, OEM partners introduced dynamic and contextually timed formats that extended far beyond static preloads.

A major turning point was the adoption of dynamic preloads, including Google Play Auto Install (PAI), which downloaded apps during the device setup flow. Industry case studies describe these placements as high-intent moments that outperform traditional installs by leveraging the user’s onboarding journey.

On-device partners such as Digital Turbine advanced the model further with SingleTap™, enabling frictionless app installation directly from ads across the mobile web and apps, powered by OEM software embedded at the system level. This innovation bypassed friction points in traditional app-store flows, improving conversion rates and install velocity.

Simultaneously, OEM ecosystems expanded placements across smart folders, OEM browsers, system apps, and lock screens, providing consistent visibility across daily interactions, not just during device activation. REPLUG’s 2025 OEM guide highlights formats such as browser ads, lock-screen cards, notifications, and recommendation folders that allow marketers to reach users through built-in device surfaces.

These UI-level integrations signaled a shift from single-point placements to ongoing, lifecycle-driven advertising.

Fully Integrated OEM Ecosystems: The New Era of Device-Native Advertising

The latest phase of OEM advertising is defined by ecosystem-wide, multi-surface ad platforms that integrate directly into the manufacturer’s system UI and first-party apps.

Huawei Petal Ads is a prime example, connecting ad delivery across AppGallery, Petal Search, Huawei Browser, and lock-screen surfaces. This cross-surface orchestration aligns ad formats with user intent, device behavior, and first-party data within a closed ecosystem.

Xiaomi’s system-level advertising framework (MSA / HyperOS System Ads) takes a similar approach, enabling ads in built-in system apps, lock screens, notification panels, and theme interfaces. Independent tech publications confirm that these ads originate from an OEM-controlled system service, illustrating how deeply OEM placements have become embedded within the OS layer.

Additionally, OEM-focused agencies highlight broader portfolios that now include:

• Dynamic preloads
• App-store advertising
• Lock-screen placements
• Notification-based engagement
• “-1 screen” feed ads
• Interstitials within OEM apps
• Browser-based placements
  

These formats form a device-native advertising environment, where OEMs provide consistent visibility from first boot through daily usage, far beyond what traditional in-app channels can offer.

What This Evolution Means for Marketers

OEM advertising is no longer a niche channel. It has matured into a fully integrated ecosystem that offers:

1. High-intent placements
Ads now appear during device setup, search, browsing, and daily UI interactions — reaching users at meaningful moments.

2. Cross-surface orchestration
Integrated platforms like Petal Ads unify placements across search, browsing, app discovery, and lock screens.

3. Deeper device-level engagement
System UI surfaces provide exposure that traditional app networks cannot replicate.

4. Competitive performance economics
OEM formats often deliver high engagement and competitive acquisition costs, especially in Android-dominant markets.

5. Strategic alignment with emerging markets
OEM-driven ecosystems are strong in Asia, MENA, Africa, and Latin America, regions where new users are primarily mobile-first.

Conclusion

OEM advertising has evolved from straightforward preinstalled apps to a robust ecosystem of device-native, cross-layer advertising solutions. Modern OEM platforms connect app discovery, install acceleration, and on-device engagement within unified, system-level environments.

As mobile platforms face increasing privacy changes and attribution challenges, OEM advertising provides a differentiated path to reach users directly within the device ecosystem. For brands focused on sustainable mobile growth, OEM inventory is no longer supplemental, it is becoming a core pillar of performance strategy.