Guides
Plain answers to the questions people ask about PDFs, screenshots, mobile gaming and their signal and Wi-Fi. Written by the developer of our four apps.
PDF Burrow
- What to look for in an all-in-one PDF app for AndroidThe best PDF app for Android keeps your files on the phone, covers the tasks you do weekly, and saves clean files. Here is a checklist to judge any app.
- How to edit a PDF on AndroidTo edit a PDF on Android, use an app that lets you tap text to change it, add text or images and fix pages. Here is what each kind of edit needs.
- How to merge PDF files on your phoneTo merge PDF files on your phone, pick them in a merge tool, drag them into order and save one new PDF. Steps, plus fixes for file size and page order.
- How to compress a PDF without losing qualityTo compress a PDF without losing visible quality, shrink the images inside it, not the text. Learn what makes PDFs large and which settings keep pages sharp.
- How to get a PDF under 1 MB, 500 KB or 200 KBTo compress a PDF to 1 MB or less, shrink its images, drop pages you do not need and rescan heavy pages. A step-by-step plan for 1 MB, 500 KB and 200 KB.
- How to compress a photo to 100 KB for an online formTo compress an image to 100 KB, resize it to the dimensions the form asks for, save it as JPG and lower the quality until it fits. Steps for any form.
- How to scan documents to PDF with your phoneTo scan to PDF with your phone, use a scanner mode that finds the page edges, flattens and cleans each page, then saves all the pages as a single PDF file.
- Phone scanning tips for clean, readable PDFsThese document scanner tips cover light, angle, background, focus and filters, so your phone scans come out flat, sharp and easy to read every time.
Screenshot Brain
- How to search the text inside your screenshots on AndroidTo search text in screenshots on Android, each image must be read with OCR first. Learn how it works, which tools can do it and how to get better results.
- How to find an old screenshot fastTo find an old screenshot fast, search for one word that was in it, then narrow by date or category. It works even when you barely remember it.
- How to organize screenshots on AndroidThe simplest way to organize screenshots on Android is to sort new ones as they arrive, group keepers by purpose and delete the rest. A system that lasts.
- How to find and delete duplicate screenshotsTo delete duplicate screenshots safely, find exact copies first, keep the original, then remove the extras. Why copies appear and what to do about it.
- Free up phone storage by cleaning your screenshotsA screenshot cleaner frees up phone storage by finding duplicates, similar shots, old clutter and large files. What to delete first, and how to do it safely.
- What makes a good screenshot manager app for AndroidA good screenshot manager app searches the text in screenshots, sorts them, cleans clutter safely and respects privacy. A checklist to judge any app.
- What is OCR? How your phone reads text in picturesOCR, or optical character recognition, turns a picture of words into real text. How your phone does it, why it gets letters wrong and where it helps.
- On-device OCR vs cloud OCR: which is more private?On-device OCR is more private because images never leave the phone, while cloud OCR sends them to a server. How they compare on privacy, speed and accuracy.
CyberBoost
- Do game booster apps really work? An honest answerMost game booster apps cannot raise FPS or lower ping. Here is what they really do, what helps a game run well, and how to spot empty promises.
- What to look for in the best game booster for AndroidThe best game booster for Android is honest about its limits. Look for real measurements, useful game modes, sensible permissions and no fake FPS claims.
- How to play games smoothly on Android: what actually helpsSmooth Android gaming comes from heat control, the right power and display settings, sensible graphics choices and a stable network. Here is what to change.
- Why games lag on your Android phone, and which causes you can fixGame lag on Android comes from heat, power limits, heavy graphics, a weak network or a full phone. Learn to tell them apart and which you can fix.
- Game booster vs gaming mode: what is the difference?A gaming mode is a set of real phone settings for play, while a game booster usually promises speed it cannot deliver. Here is how they differ.
- Do RAM cleaners make games faster?RAM cleaners rarely make Android games faster, because the system already frees memory when a game needs it. Here is how memory works and what helps.
- Game booster for low-end phones: what helps on an older phoneOn an older or budget phone, a booster app cannot add power. Lower graphics, free storage, cooler play and the right power settings make games playable.
- Red flags in game booster apps: fake FPS and "ping boost" claimsFake FPS counters, ping boost promises and CPU cooler animations are signs a gaming app is not honest. Learn the red flags and what an honest app looks like.
CellRadar
- How to check your real signal strength on AndroidTo check signal strength on Android, find the dBm number in your SIM status screen or a signal app. Here is where to look and how to read it properly.
- What does dBm mean? Signal strength numbers explaineddBm measures radio power against one milliwatt. Phone and Wi-Fi readings are negative, and every 3 dB step roughly doubles or halves the power you receive.
- What is a good signal strength in dBm for 4G and 5G?A good signal strength in dBm for 4G or 5G is about −90 dBm or better. Below −100 dBm, data slows down, and below −110 dBm you may start to lose service.
- Full bars but slow internet? Why bars lieFull bars but slow internet usually means a busy cell, interference or a problem beyond the mast. Bars show signal strength, not speed. Here is how to check.
- 4G vs 5G: what you actually get on your phone4G vs 5G on a phone depends on which kind of 5G you get. Low-band 5G feels like good 4G, mid-band is faster, and high-band is very fast but short range.
- Why your phone keeps dropping from 5G to 4G5G dropping to 4G is usually caused by weak 5G coverage, power-saving settings or the network itself. Here is how to find the cause and what you can change.
- How to get better mobile signal at homeTo improve signal at home, find the best spot, use Wi-Fi calling, try another network mode and only use a carrier-approved repeater. Apps cannot boost signal.
- How to find the spot with the best signal in your houseTo find the best signal spot at home, take dBm readings in each room for 30 seconds, compare windows, floors and corners, and note the network type each time.