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Step-by-step guides for phones, photos, documents and everyday tech.
Android has no single trash. How to empty it in Google Photos, Files by Google, Samsung Gallery and My Files, and what to check before deleting for good.
Read more: How to Empty the Trash on Android: Google Photos, Files by Google and Samsung ›Decibel chart of everyday sounds from whisper to fireworks, with WHO listening times, NIOSH and EU workplace limits, and how to measure noise yourself.
Read more: Decibel Chart: How Loud Everyday Sounds Are, From Whisper to Fireworks ›Puzzle games for Android sorted by type: Sudoku, nonograms, sliding blocks, pipes, physics and escape-room puzzles, with ads and cost model checked.
Read more: The Best Puzzle Games for Android, Sorted by Type of Puzzle ›Sign a PDF on your Android phone without printing: draw your signature, fill in form fields, scan paper pages and share the signed file from your phone.
Read more: How to Sign a PDF on Android Without Printing or Scanning ›How loud is too loud? See the NIOSH and WHO noise limits, typical decibel levels, and how to measure and calibrate a decibel meter app on Android.
Read more: How Loud Is Too Loud? A Plain Guide to Decibels and Phone Meters ›How to hide photos on Android: Google Photos Locked Folder, Samsung Secure Folder, the .nomedia trick and gallery apps with a PIN vault compared.
Read more: How to Hide Photos on Android: Vault Apps and Built-In Options Explained ›Free up storage on Android step by step: clear app cache and downloads, delete duplicate photos, screenshots and big videos, and empty the trash.
Read more: Free Up Storage on Android: Duplicates, Screenshots & Big Videos ›Clean up your photo gallery on Android step by step: remove screenshots, similar shots and big videos, then sort the rest by swiping, with a trash to undo.
Read more: How to Clean Up Your Photo Gallery on Android: Swipe to Sort ›Brain puzzle games for adults explained: Sudoku, nonograms, sliding and tap-away arrow puzzles, plus what to look for in a fair logic puzzle app.
Read more: Brain Puzzle Games for Adults: Why Tap-Away Puzzles Work So Well ›
Logic Puzzle
Tap the snakes off the board in the right order – a calm logic puzzle with 5,000 levels in 10 worlds. See more: Snake Escape ›
Try 10 of the hardest levels in your browser ›
PDF Signer
Sign and fill PDF forms, scan paper to PDF, merge, split and compress – offline. See more: Sign PDF ›
Photo Vault & Cleaner
Photo and video gallery with albums, a PIN vault, editor and storage overview. See more: Photo Gallery ›
