The TechBigs Blog — Android How-tos
Step-by-step Android how-tos from TechBigs: package formats, install errors, CPU architecture, storage, permissions and checksums.
How to Fix "App Not Installed" and "There Was a Problem Parsing the Package"
Work through the real causes behind "App not installed" and "problem parsing the package": damaged files, bundles, signature conflicts, downgrades and more.
How to Find Your Android Version and CPU Architecture (arm64-v8a, armeabi-v7a, x86_64)
How to check your Android version and supported ABIs (arm64-v8a, armeabi-v7a, x86_64), avoid the 32-bit and 64-bit traps, and pick the right APK build.
How to Free Up Storage for Large Android Games: OBB, Data, Cache and What's Safe to Delete
Where big Android games keep OBB, data and cache files, how to clear cache without losing progress, and what is safe to delete before a large install.
Android Special Permissions Explained: What Each One Allows and When an App Has No Business Asking
What install unknown apps, display over other apps, accessibility, notification access, usage access and all files access allow, and when to say no.
How to Verify an APK's SHA-256 Checksum on Android and on a Computer
Check an APK's SHA-256 hash with certutil, PowerShell, shasum or sha256sum, or on the phone itself, and learn what a match does and doesn't prove.