To deep clean your phone, start by turning it off and removing the case, then use a microfiber cloth lightly sprayed with a 70% isopropyl alcohol solution or disinfectant wipe (not bleach) on the screen and body, avoiding openings; use a soft brush or toothpick for ports/speakers (no compressed air) and clean the case separately with soap and water.
To clean deep junk files, start by clearing app caches in Settings > Storage. Use built-in cleanup tools or trusted third-party apps to remove residual files and temporary data. Uninstall unused apps to free space. Regularly restart your phone to clear memory leaks.
Here's how to do it:
Do not use rubbing alcohol, paper towels, compressed air, dish soap or vinegar. All of these can damage your phone: Paper towels can scratch your screen, and vinegar could damage its coating. Do not use hand sanitizer on your phone screen, but do sanitize your hands before touching your phone.
You can also use disposable 70% isopropyl alcohol wipes or disinfecting wipes like those made by Clorox or Lysol – just wring out any extra moisture before wiping down your phone.
Dialing *#21# on your phone checks the status of your unconditional call forwarding, revealing if your calls, texts, or data are being redirected to another number without you knowing, often without leaving traces on your phone bill; it's a standard network code to see your carrier's call forwarding settings, not a definitive "hacking" tool, but useful for detecting unauthorized forwarding.
After you clear cache and cookies: Some settings on sites get deleted. For example, if you were signed in, you'll need to sign in again. Some sites can seem slower because content, like images, needs to load again.
When your phone storage is full, delete unused apps, clear app caches and data (especially messaging apps like WhatsApp/Messenger), offload or move large media (photos/videos) to the cloud/computer, delete large downloaded files (movies, offline maps), and remove old screenshots or unnecessary documents, using your phone's built-in storage manager for guidance.
Manually clean up your Android
Clear app caches: Cached data helps apps load faster, but can accumulate over time and slow down your device. To clean the cache on your Android, go to Settings > Apps > select an app > tap Storage > Clear Cache.
In short, factory reset won't delete everything off Android Samsung galaxy phone. The data is still recoverable. You have to take additional means to permanently erase data from Android phone.
Clearing app data is a more drastic step than clearing the cache, as it resets the app to its default state. IT admins should consider this option when an app is facing significant issues that cache clearing does not resolve.
Take off your phone case, and turn off your mobile phone. Use a microfiber cloth (not paper towels) with a mild cleaning solution, like a 50-50 mixture of water and Isopropyl alcohol. Spray the cloth—never your tech—and wipe down both sides of your phone, special care of the protective coating.
Plus, you'll learn some warning signs of an infection and tips to help keep your phone or tablet safe from malware.
Improve performance and speed. Over time, unused apps, old files, and cached data slow your phone down. Removing them frees up memory and makes everything from scrolling to app loading faster.
The primary reason for clearing the application cache is to free up storage space. Clearing data is a dramatic step, generally reserved for when an app misbehaves. Some apps may experience glitches due to corrupted cache files, untested server-side changes, buggy software, or a new Android OS update.
Delete texts and attachments in Messages
You can make more space available when you delete texts and attachments — like photos, videos, and files — that you don't need anymore.
Both Android and iPhone devices trigger the “Storage Almost Full” alert when your remaining space drops too low for new apps, system updates, or media. The biggest culprits are usually: High-resolution photos and videos (especially 4K or HDR). Large apps and games.
Note: Clearing cache and cookie history can also eliminate saved passwords. Not all browsers have options to prevent this, although Google Chrome, Microsoft Edge, and Internet Explorer have that option.
Clearing your cache only deletes temporary files that your browser stores on your PC. Clearing cache will not delete any personal files, bookmarks or browser settings.
Sometimes, websites may not load properly because your browser is using old cache files. Clearing the cache ensures you're seeing the most up-to-date version of the site. Frees Up Space: Cached files can take up significant storage space, especially if you browse the internet a lot.
You can also use *82 to unblock your number in case your call gets rejected temporarily. Some providers and users will automatically block private numbers, so using this code will help you bypass this filter.
Unusual sounds or echoes during calls
If you're noticing weird clicking sounds or high-pitched hums on multiple calls across different locations and with different people, it could be a sign that someone is eavesdropping or tracking your calls.
*#62# is the common USSD code to check the number to which calls are forwarded when your phone is unreachable (out of coverage or switched off).