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Tech Tutorials | App Reviews & Android Fixes | Fintech Shield Blog
Welcome to the Fintech Shield Blog | Your go-to hub for insightful Tech Tutorials, Unbiased App Reviews, Android Solutions, Windows Solutions and Digital innovation tips. Whether you're a curious user or a seasoned tech pro, we’ve got something valuable for you. Stay ahead in the digital era with our expert-driven guides and updates.
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OxygenOS 16: A Deep Dive into OnePlus’ AI-Powered Liquid Glass Experience
OnePlus has unveiled OxygenOS 16, introducing a stunning Liquid Glass UI, Gemini AI integration, and the all-new Mind Space for smarter personalization. From AI-driven features to improved cross-device connectivity, OxygenOS 16 marks OnePlus’ biggest leap toward an intelligent and fluid Android experience.
Kalyan Bhattacharjee
13 hours ago4 min read


Best File Managers for Android 2025 | Top 7 Apps for Speed & Security
Managing files on Android doesn’t have to be a hassle. Explore our expert-picked list of the 7 best file managers in 2025 to organize, secure, and speed up your device.
Kalyan Bhattacharjee
4 days ago5 min read


Battery Saver Apps: Do They Really Work in 2025? | Tested & Reviewed
Tired of your phone dying too soon? Explore the best battery saver apps for Android in 2025 - tested for real performance and safety. Learn how these apps optimize power, reduce heating, and extend your device’s lifespan effectively.
Kalyan Bhattacharjee
Oct 83 min read


Best Android Open Source Apps (2025) | Free, Safe & Ad-Free Apps
Experience the power of open-source innovation on Android. This guide highlights the best free and privacy-focused open-source apps of 2025 - from media players and messengers to productivity tools - all designed for performance, transparency, and freedom.
Kalyan Bhattacharjee
Oct 63 min read


Stock Android Theme: Get the Clean, Fast & Minimal Android Experience
Experience the purest form of Android with the Stock Android Theme. This guide explains what Stock Android is, its pros and cons, and the top 5 free themes that bring the original Pixel feel to any smartphone. Whether you’re after speed, simplicity, or that signature Google look - this article covers it all.
Kalyan Bhattacharjee
Oct 43 min read


Stock Android – Key Features, Pros & Cons | Pure Google Experience
Stock Android offers a clean, fast, and bloat-free experience - exactly how Google intended Android to be. In this guide, explore its benefits, limitations, and why it remains a top choice for those who value simplicity and performance in 2025.
Kalyan Bhattacharjee
Oct 43 min read


Arattai App – Made in India WhatsApp Alternative by Zoho
Arattai, Zoho’s homegrown messaging app, is making waves as a potential WhatsApp alternative. With data hosted in India, privacy-first features, and smooth performance on low-end devices, it’s gaining attention fast. But can Arattai really compete with WhatsApp? Let’s explore.
Kalyan Bhattacharjee
Oct 23 min read


Stock Android vs Custom ROMs (2025): Pros & Cons Explained
Stock Android offers a clean, fast, and reliable experience, while Custom ROMs unlock endless personalization and features. In this blog, we break down the pros and cons of both, helping you decide which Android experience is the best fit for your smartphone in 2025.
Kalyan Bhattacharjee
Sep 273 min read


Dell Laptops 2025 | XPS, Inspiron, Latitude & Alienware
Discover the best Dell laptops for 2025! From the premium XPS series to budget-friendly Inspiron, powerful Latitude, and gaming-ready Alienware, Dell has something for everyone. Explore top models like the XPS 13 Plus, Inspiron 16 Plus, and Alienware x16 to find your perfect match.
Kalyan Bhattacharjee
Sep 244 min read


Best Free Linux Apps You Should Install Right After Setup
Just installed Linux? Here’s a curated list of the best free Linux apps you should install right after setup. From productivity to multimedia, these apps will supercharge your Linux experience.
Kalyan Bhattacharjee
Sep 194 min read


What is Android GPU Inspector? How to Use It for Better Gaming
Android GPU Inspector (AGI) is Google’s powerful tool to analyze GPU performance on Android devices. In this guide, we’ll explain what it is, why it matters for mobile gaming, and how developers and gamers can use it to reduce lags, optimize graphics, and get better gameplay in 2025.
Kalyan Bhattacharjee
Sep 173 min read


Best Android Phone Cleaner for Old & Low Storage Devices (2025)
Is your Android phone running slow or low on storage? Check out the best Android phone cleaner apps for old devices in 2025 to free up space, reduce lag, and boost performance.
Kalyan Bhattacharjee
Sep 153 min read


Apple Launches iPhone Air: World’s Thinnest iPhone with A19 Pro and iOS 26
Apple has launched the iPhone Air, the world’s thinnest iPhone at 5.6 mm. Packed with the A19 Pro chip, Wi-Fi 7, 48 MP Fusion camera, iOS 26, and 27-hour battery life, it blends futuristic design with flagship performance.
Kalyan Bhattacharjee
Sep 113 min read


Best Custom ROMs for Battery Life & Performance Balance [2025 Tested]
Looking for a custom ROM that delivers both battery efficiency and smooth performance? In this blog, we’ve tested and reviewed the best ROMs of 2025 that strike the perfect balance. From PixelOS and ArrowOS to Evolution X and LineageOS, find out which ROM suits your needs best.
Kalyan Bhattacharjee
Sep 73 min read


AI-Powered Video Editing Apps for Android – 2025 Picks
AI-powered video editing apps are reshaping how creators edit content on Android. In this guide, we explore the top 5 apps in 2025 that save time, boost creativity, and make editing reels, shorts, and professional videos effortless.
Kalyan Bhattacharjee
Sep 25 min read


Gaming on Android 16 with Custom ROMs – What’s New?
Gaming on Android 16 gets a major upgrade with custom ROMs. From smoother frame rates to advanced GPU tweaks, discover how the latest ROMs are reshaping the mobile gaming experience in 2025.
Kalyan Bhattacharjee
Sep 15 min read


AMOLED vs OLED: Which Display Technology is Better?
AMOLED vs OLED displays – what’s the difference? Learn about picture quality, brightness, power efficiency, and durability of AMOLED and OLED screens. Compare their pros and cons to decide which is best for smartphones, TVs, and other devices.
Kalyan Bhattacharjee
Aug 313 min read


Best Battery Manager Apps for Android (2025 Edition)
Running out of battery at the worst possible moment is every Android user's nightmare. From monitoring real-time battery usage to optimizing charging speed and extending overall battery health, the right battery manager app can make a huge difference. In this guide, we’ve curated the best battery manager apps for Android to help you get the most out of your device whether you’re a heavy gamer, multitasker, or just want longer-lasting daily performance.
Kalyan Bhattacharjee
Aug 274 min read


AI Operating Systems: What Happens When Your OS Starts Thinking For You?
Smart Operating Systems are no longer just tools - they’re becoming intuitive companions. With built-in AI, proactive automation, and real-time adaptability, today’s OS platforms are reshaping how we interact with technology. From personalized suggestions to voice-controlled actions, this blog dives into how these intelligent systems are revolutionizing our devices and redefining user experience.
Kalyan Bhattacharjee
Aug 243 min read


Minimalist Android Setup: Themes, Launchers & Customization Guide
Tired of a cluttered Android experience? Go minimalist. In this blog, explore how to give your smartphone a clean, sleek, and distraction-free interface with handpicked themes and lightweight launchers. Ideal for those who value function and simplicity.
Kalyan Bhattacharjee
Aug 233 min read
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