[General Questions and Answers] rajibando:
Hello, everyone and the moderators!

I just joined.

I had happily used Android in Datawind Tablet for 6 months, two years back, when it developed a snag. I received a replacement. It had third-party apk download site of Datawind, not the Google's Playstore. I was displeased by this limiting option. So I returned back the device and got back my full payment.

I informed Google about this but Google said that since Android development is under Apache license, not GNU license, people could do as they pleased.

A few months back I was interested by the Whatsapp app. It can't run on Android-x86 on PCs. So I planned to buy a cheap smartphone to test it. I bought a Karbonn Titanium 3Dplex Lite.

Everything alright upto this! I was happily using Whatsapp, when my notice was brought upon a third party app called Tap-n-Buy. I could not uninstall it.

I have been an exclusive Debian Linux user for the last nine years. So I thought I could su and remove it.

But I found that not only su is not possible ordinarily in Android, but in the android-porting forums it appears to be a

taboo

word.

Very well! I researched and found the site techaddictted.wordpress.com/2016/06/01/9-apk-to-root-android-phones-without-pccomputer

I downloaded a few rooting apk files from their parent sites.

In the meanwhile I was helped by Androidcentral, link, androidcentral.com/root and digitaltrends.com/mobile/how-to-root-android, in the preliminary research. I was also helped by the android-x86 forum.

I continued to post a few queries in "android-x86 and ancroid-porting" but am not receiving any replies:

Topics:

(1) Customise Pre-installed Android in personal Smartphones?

(2) How to copy the entire Android OS installed on smartphone to PC running Linux?

(3) Why Rooting Android on Smartphones is a taboo subject?

(4) How to install Android ISO on Smartphone from Linux Systems?

The process being: downloading the installed OS from my Smartphone to my lap-/desk- top, su and remove problematic apps, and put it back on the smartphone.

But needless to say, one of my posts has been refused. The rest have

yet not been approved

for general viewing.

With my threads to android-porting I came to have an intuition about some issues:

(1) It appears that Android rooting is a taboo subject in Android google usergroups.

(2) There is no direct super user level in android to be root'ed but only 3rd party apps.

I downloaded some of the apk files from the links provided by techaddictted.wordpress.com/2016/06/01/9-apk-to-root-android-phones-without-pccomputer . I checked those apk files using online virus malware scanner and found all of them problematic.

I continued to search, and from MakeUseOf - Technology, Simplified, (i.e., makeuseof.com) I was led

here

.

Now my interest is very detailed:

Ultimately, I wish to download the Entire Installation on the Smartphone of the custom Android by my mobile developer, tweak the files, remove a couple of problematic apps and then reinstall the tweaked files back to the smartphone again.

I know that in Linux I could remove root password using booting from a different liveCD, use some tricks like chroot and then remove and log on as root with a new password.

As a Linux aware person I can understand that may be Android is trying to suppress information about rooting a device to keep the proprietary apps running. They have their limitations.

But on the contrary, Google Android itself warns me of the third party software, which is indicates as malicious. Here is the link: drive.google.com/open?id=10N1HtycG87_5LW59-1GGKI32b1ucN0bC

It was these Tap-n-Buy warnings that actually aroused my interest in rooting my device, to be a superuser and remove this software. Otherwise, this app doesn't appear to be removable.

Could I be helped?

We will take one baby step at a time. First know whether it is at all possible to be a superuser without a third-party Superuser app.

And continue from there to the next baby step.