What exactly is Private DNS?

 Every Android phone since Android 9 (Pie) and above has now a feature, called Private DNS. It has 3 possible options: Off, Custom and Automatic.

1. Off option is clear enough. Your phone uses the DNS server provided by your provider. Meaning, your provider can see what websites you open (if he wants). This should be the fastest option.

2. Custom option is also clear. You set a DNS of your choice. If you are afraid that your provider/government wants to track your browsing habits, you can input a third party DNS server (among popular choices are Google's public DNS servers or CloudFlare ones. That you only the third parties can actually track your browsing habits, so choose wisely.

3. Automatic options is the most interesting one. It is advertised as more secure, encrypted by TLS over DNS. However, your phone's OS is provided by Google. So when you use automatic, you are actually securing your DNS requests over TLS by encrypting them. This makes them invisible (or hard to see) for an external eye. However, this also means that you are sharing them with Google, because the servers it switches to when set to Automatic belongs to Google. So they are only telling you half of the truth.

Here is how to test your DNS settings. If you see a google DNS after scanning, then you are trusting Google. If you see your network provided DNS, then you trust the provider. 

It is clear there is no best option here. But atleast now you knw the whole truth about Google's new option, called: Private DNS. It could be located on different places in your Android menu, but in my case it is located in Settings-> Connection sharing-> Private DNS.

Good luck and happy (and anonymous for most) browsing!

How to delete "Other Files" from Xiaomi and free-up space

If you just used your phone without filling it up with pictures, videos, games, apps, or other junk and it still has it's memory filled up, skip to 3.

General space freeing techniques:

1. Uninstall all unneeded apps and games.

2. Delete or move (to SD card, cloud or computer) all pictures, videos, files you don't need.

3. Check your Downloads folder for any e-books, .apk or other files you may have downloaded and forgot there. Storage Analyzer (free) can help determine which files take up most space.

Next step: deleting cached data:

1. Go to Settings->Storage->hold "Cached data" and a prompt will appear. Select "delete". Wait for it to delete and show refreshed free space left.

If you now have enough free space and you don't want to dig deeper, congrats on your new free space!

Advanced file deletion:

Disclaimer: The actions described below can damage the software of your phone, proceed at your own risk!

If you still suffer, open your favorite file manager and search for "photo_blob" files. They are image thumbnail cache of your Gallery. Mine were 400MB each (two of them). Delete them. They will be recreated next time you open your gallery or stock camera app. They will start building up in size again, but it will take a few months before it reaches the same size. The only drawback from deleting is that first time you open your gallery it will take a few seconds to recreate the new image cache.

Another location you might want to check is the MIUI folder. If it's size is in the gigabytes, open it and check size of each folder inside. Usually the Cloud backup stores local files in there, filling up the free space (for some reason).

If you still have gigabytes of mysterious Other files and cannot sleep at night, wandering what are those, go to Expert File deletion.

On my own phone Other files was 6GB.

Expert File deletion: deleting "Other files" (root required)

If you came to this website, you've probably watched at least three videos which didn't help and read that many articles with the same success rate.

Unfortunately next step only works on rooted phones. There maybe some "cleaner app" which deletes this, but since it is accessible only by root, I doubt it. You can try Xiaomi File manager and see if it does the job by some integrated security permissions.

Step 1

Fire up your root application (in my case Super SU).

Step 2

Fire up your favorite root capable File manager (in my case Amaze)

and from it's menu of storage locations select /Root

Step 3. Super SU will ask you if you trust and wish to provide root access to the file manager - agree.

Step 4. Go to /Data/App folder

The culprit in Xiaomi's root folder

Unfortunately Amaze did not allow me to check folder size in root folders, so I had to manually check each folder manually until I found the culprit. It was Google Services which was creating backups each time I installed or uninstalled an app. Everyone of them was 200+MB and they were nineteen of them, dated back since I first started using the phone!

Exact naming was com.google.android.gms-1  - Jan 2016
                              com.google.android.gms-2  - Feb 2017
                              com.google.android.gms-3  - Sept 2017
                              ...
                              com.google.android.gms-19  - Nov 2018


 After deleting all of them one by one (Amaze refreshes and kicks me back to the root folder after each folder deletion), the Other files were reduced to only 900MB! That way I reclaimed back more than 5GB! My phone became a lot quicker and also stopped rebooting itself when it is out of memory.

Final result - Other Filesdecreased to only 900MB!

It might be another app which caused this, so be careful! It is highly recommended to backup your data using TWRP before deleting any root folders as this can make your phone unusable.

With this the space quest ends. This guide should work also on other Android phones. If you have found other ways to free up space on an Android OS, please post in the comments below.



*The first phone reboot after deleting Other Files took about 2 minutes. It appears that Android OS is performing some boot time optimizations for the new free space. Please be patient on the first boot.

How To Fix Broken Goclever Tab i70 Android Instalation

If your Goclever Tab i70's android software has been damaged for some reason, and the only thing you can do is bang it against your head, then here is how you can make it come back to life again.

1. Make a hard reset - press the reset button on the back cover. If no luck, proceed to step 2.
2. Prepare your micro SD card:

3. Make sure you have card reader that works correctly with big microSD cards (4, 8, 16GB..). For this operation you need only 1Gb card. Remove all removable flash drives from your computer. Leave only your microSD card.

4. Delete any partitions on it. (right click on My Computer / Computer ->Manage->Disk Management-> select your microSD card and click the X button on top, select Yes)

5. Download latest software http://download.goclever.net/serwis/tab/tab_i70_am.zip (you might want to check for a newer version on Goclever's website ).
6. Unzip it.
7. Run IUW1.2.exe from the  extracted content.
8. Select Boot Disk, then browse for the software file I70_22_AM.ius

IUW screen

If you have left only your microSD card in your computer, then there is only RemovableMedia1.

9. Press Burn

10. After the process is complete, insert the card in your charged Goclever tab i70 and press Power button.

11. If all went as it should, just touch the screen to start the install process.

12. When finished the tablet will ask you to eject the SD card and to reboot it.

13. To make your SD card usable again, just delete the current partition and create a new one with the card's full size. It must be in FAT32 format.

14. You're welcome :)

P.S. This procedure is very similar with most tablets with Android Froyo. It might help you understand how to do it with your specific device.