Phone utility tools — battery, storage, flashlight & more
Phone utility tools all in one means exactly that: instead of installing a separate flashlight, battery checker, storage analyzer, sensor tester, mirror, magnifier and wallpaper app, one free toolkit covers the lot. Carbide does it in two layers — the Device Info web tool checks your specs in the browser right now, and the everyday device tools ship in the free Carbide app for Android and iPhone (coming soon).
This guide walks through each one: what it does, how to use it, and the honest answer on permissions and privacy — because too many single-purpose utility apps exist mainly to show you ads.
What is my device? Check specs, screen and browser online
Wondering what phone you have, what your screen resolution is, or which Android version you are on? The Device Info tool answers all of it in one glance: device and browser name, operating system and version, screen size, resolution and pixel density, CPU cores, memory and language — free, in your browser, on any phone or computer, no sign-up.
Everything is read client-side by your own browser; nothing is uploaded or stored. That makes it a quick, safe way to grab the exact specs a support technician asks for, document a phone you are about to sell, or see what a website can detect about your device. When the question is about your connection rather than your hardware, pair it with Speed Test and IP Info — or read what your IP address actually reveals.
How to check battery health on Android — 3 ways
Battery health — how much of the original capacity your battery still delivers — is the number behind "my phone dies by 3 pm". Android hides it better than iOS, but you have three ways to get at it:
- Dial *#*#4636#*#* in the phone app. On some phones this opens a hidden testing menu with battery information — many manufacturers disable it on recent models, so do not worry if nothing happens.
- Check Settings → Battery. Samsung tucks a diagnosis under Battery and device care, and iPhones show Battery Health & Charging with an exact maximum-capacity percentage.
- Use a battery dashboard. The Battery tool in the Carbide app puts level, health, temperature, voltage and charging status on one clean screen — no account, and the readings stay on your device.
Storage full? See what's eating the space
"Storage almost full" rarely means you need a cleaner app — it means you need to see the breakdown. The Storage Info tool shows how apps, photos, video, audio and system data divide your space, analyzed entirely on your device, with no booster ads and no fake junk scans.
The fix is usually three steps: open the breakdown and sort by size, clear the biggest offenders — old videos, chat app media folders and cached data are the usual suspects — then re-check. Expect a concrete result, not a vague promise: you see exactly which category dropped and by how many gigabytes. That beats guessing, and it beats handing a random "cleaner" app access to all your files.
Test every sensor before buying a used phone
A used phone can look perfect and still have a dead sensor. The Sensor Box tool streams live readings from the accelerometer, gyroscope, magnetometer, and the light and proximity sensors — tilt the phone and the motion numbers move, cover the earpiece and the proximity value flips. If a reading stays frozen, that sensor is gone.
Why it matters: a dead magnetometer means no compass or navigation arrow, a dead proximity sensor means the screen stays lit against your cheek during calls, and a faulty gyroscope breaks games and panorama shots. Run the full sweep in two minutes before you pay. These same sensors also power the measuring apps on your phone and the decibel and vibration meters — one more reason to confirm they work.
Flashlight, mirror and magnifier — everyday tools, honest permissions
Flashlight apps are the classic permission trap — a torch has no business reading your contacts or location. The Flashlight tool needs the camera flash and nothing else: one tap for steady light, plus strobe and SOS modes, and a bright screen-light fallback if your phone has no flash.
The Mirror tool is a real camera mirror, not screen mirroring: it turns the front camera into a clear pocket mirror with freeze, zoom and flip — and nothing is saved or uploaded. The Magnifier tool is the same idea pointed outward: a digital loupe with smooth zoom, light and freeze frame for reading menus in dim restaurants, medicine labels and tiny serial numbers. Both use the camera permission only, and both work offline.
Live wallpapers without a single-purpose ad-farm app
Animated backgrounds are one of the most-installed phone customizations — and dedicated wallpaper apps are among the most ad-stuffed on the stores. The Live Wallpapers tool takes the boring-but-better route: browse a gallery of animated wallpapers and set one, inside the same toolkit you already use, with no account.
Setting a wallpaper needs operating-system-level access, so this one lives in the Carbide app rather than the browser. The selection favors battery-friendly animations — a live wallpaper only redraws when your home screen is visible, so a well-made one costs far less battery than most people assume.
One free toolkit instead of eight installs
Count what this page just covered: Device Info, Battery, Storage Info, Sensor Box, Flashlight, Mirror, Magnifier and Live Wallpapers — eight utilities that would normally mean eight installs, eight permission prompts and eight sets of ads. Here they are one free toolkit: the Device Info check runs on the web today, and the rest arrive in the Carbide app for Android and iPhone — coming soon, with each tool page taking your interest now.
The web side is already bigger than one tool: Speed Test, Network Info and IP Info cover the connection half of "is my phone okay?" — the mobile network diagnostics post walks through those.
Frequently asked questions
What battery health percentage is bad?
Below about 80% of original capacity, most phones show noticeably shorter days and manufacturers generally consider the battery degraded — that is Apple's service threshold too. Between 80% and 90% is normal aging; a battery dashboard helps you watch the trend rather than panic at one number.
Why is my phone storage full for no reason?
It is almost never "no reason" — it is usually cached data, chat app media folders (WhatsApp images and videos are notorious), forgotten downloads and offline maps. A storage breakdown shows exactly which category holds the space, so you delete the right things instead of everything.
Is my device information uploaded anywhere?
No. The Device Info web tool reads your specs client-side, in your own browser — nothing is sent to a server or stored. The app tools work the same way: battery, storage and sensor readings are taken and displayed on your device.
What permissions do these utility tools need?
Only what each tool obviously requires: the Flashlight uses the camera flash, the Mirror and Magnifier use the camera, and the battery, storage and sensor tools read system information. None of them need your contacts, messages or location.
Are the tools free, and is the app available now?
Everything described here is free with no sign-up. The Device Info tool works in your browser today; the Carbide app for Android and iPhone is coming soon — its tool pages let you register interest so you know the moment it ships.
One toolkit, honest permissions, no ad-farm installs: check your specs with Device Info right now, and let the battery, storage and sensor dashboards — plus the flashlight, mirror and magnifier — replace a folder full of single-purpose apps when the Carbide app lands.