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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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Best Android Cleaner Apps That Actually Work (2025 Tested List)
Most Android cleaner apps promise miracles but deliver ads. In 2025, we tested dozens and found five that actually improve speed, clean junk, and free up space. From Files by Google to SD Maid, here’s what works—and what doesn’t.
Kalyan Bhattacharjee
Jun 13 min read


Best VPN Apps for Android in 2025 (Free & Paid Options)
Struggling to find a reliable VPN for your Android phone in 2025? Here’s your complete guide to the best free and paid VPN apps tested for speed, security, and value.
Kalyan Bhattacharjee
May 303 min read


Brain-Computer Interfaces: The Rise of Thought-Controlled Tech
What if you could type, control devices, or play games using just your mind? Brain-Computer Interfaces are making that a reality in 2025. From Neuralink’s implants to OpenBCI’s wearables, discover how thought-controlled tech is reshaping the future.
Kalyan Bhattacharjee
May 293 min read


10 Must-Have Free Windows Apps in 2025 (That Pros Actually Use)
Looking to upgrade your Windows setup without breaking the bank? Here are 10 free apps trusted by professionals in 2025 — from productivity boosters to security essentials.
Kalyan Bhattacharjee
May 283 min read


Windows 12 Leaks: UI Redesign, AI Features & Expected Release Date
Windows 12 leaks are here, and they’re lighting up the internet! From a sleeker UI and AI-powered features to performance enhancements and an expected 2024 release—this post unpacks everything we know (and speculate) about Microsoft’s next big OS update.
Kalyan Bhattacharjee
May 253 min read


Android vs iOS in 2025: Which OS Is Better for You?
In 2025, the battle between Android and iOS continues to evolve, offering users more features, flexibility, and innovation than ever before. This blog dives into the latest updates, performance benchmarks, customization options, and overall user experience to help you decide which operating system suits your lifestyle and preferences best. Whether you're a fan of Android's flexibility or iOS's seamless ecosystem, we break it down for you.
Kalyan Bhattacharjee
May 183 min read


Hidden Android Features You Didn’t Know About (2025 Edition)
Think you know your Android phone? Think again. This 2025 guide uncovers hidden features and smart tools most users miss—like advanced gestures, privacy options, and productivity boosters. Give your Android a real upgrade today.
Kalyan Bhattacharjee
May 113 min read


The Fall and Rise of Nokia: A Corporate Cautionary Tale
Nokia’s story is one of innovation, complacency, and resilience. From being the world’s top mobile brand to losing its crown and slowly rebuilding through telecom and Android devices. This blog explores the dramatic rise, fall, and partial revival of Nokia.
Kalyan Bhattacharjee
May 103 min read


Top Custom ROMs for Android Devices in 2025: Android 14
Looking to supercharge your Android experience in 2025? Discover the top custom ROMs that offer faster performance, better battery life, enhanced privacy, and sleek new designs. Whether you're a power user or just want a clean, bloat-free Android interface, this guide will help you pick the perfect ROM for your device.
Kalyan Bhattacharjee
May 64 min read


Samsung’s Evolution: From Grocery Store to Global Tech Giant
Samsung started as a grocery store in 1938 and is now a global tech leader. Here’s how it made the leap from market stalls to microchips.
Kalyan Bhattacharjee
May 13 min read


What’s New in Android 15? Top Features & Changes Explained
A closer look at Android 15’s standout features, design upgrades, and what it means for your device experience in 2025.
Kalyan Bhattacharjee
Apr 303 min read


Lithium-Ion Batteries: The Power Behind Modern Technology
Discover the history, working mechanism, and global impact of lithium-ion batteries, powering everything from smartphones to electric vehicle
Kalyan Bhattacharjee
Mar 223 min read


Robotics Technology: Early Innovations to Advanced Tech
From early automation to cutting-edge AI, robotics has transformed industries. Explore its history, latest innovations, and future. 🤖🚀
Kalyan Bhattacharjee
Mar 184 min read


Exploring Sensors | Types, Applications and Leading Companies
Discover the world of sensors - explore their types, applications, and top companies driving innovation in industries worldwide!
Kalyan Bhattacharjee
Jan 133 min read


Data Room (2025) | Secure Virtual Data Rooms for Business
Ensure secure data storage and streamlined business operations with data rooms. Explore their benefits, features, and why they matter today!
Kalyan Bhattacharjee
Dec 26, 20244 min read


What Is a Drop-Down Menu? Features, Examples, and Tips
Drop-down menus are essential UI elements that simplify navigation and improve user experience. This blog breaks down their features, showcases real examples, and shares tips to use them effectively on websites and apps.
Kalyan Bhattacharjee
Dec 4, 20244 min read


Linux Mint vs Ubuntu | A Comprehensive Comparison
Linux Mint and Ubuntu are two of the most popular Linux distributions, both offering user-friendly experiences but with key differences in design, performance, and usability. Whether you're a beginner switching from Windows or an experienced Linux user, understanding how these two distros compare can help you choose the right one for your needs. This blog dives into a detailed comparison covering interface, system requirements, software management, and more.
Kalyan Bhattacharjee
Jul 20, 20244 min read


Lenovo Laptops 2025 | Innovation, Performance & Top Series
Discover the latest Lenovo laptops for 2025! From ThinkPad’s business power to Legion’s gaming performance and Yoga’s flexibility, find your perfect Lenovo device today. Explore top models like IdeaPad Slim 3 and Legion 5 Pro to boost productivity, creativity, and entertainment.
Kalyan Bhattacharjee
May 8, 20244 min read


Kali Linux: The Operating System for Cyber-Security Professionals
Kali Linux is a powerful, Debian-based operating system tailored for cybersecurity professionals and ethical hackers. Packed with hundreds of pre-installed tools for penetration testing, digital forensics, and network analysis, Kali is the go-to OS for security auditing. In this blog, we explore what makes Kali Linux unique, its key features, and why it's essential for anyone serious about cybersecurity.
Kalyan Bhattacharjee
May 15, 20233 min read
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