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For security I want to separate android OS for Official Banking Transactions and separate for homely entertainment and one for gaming and separate for technical download or torrent downloading OS of android

My device phone is using

android lolipop 5.1.1 Architecture ARMV 71 (32 bit) Platform qcom Flash samsung Q823MB Processor Qualcomm snapdragon 205/208 1.27ghz CPU Cortex A7 Ram 2gb Internal memory 16gb External memory 64gb

have founded stock ROM for my handset device for android 5.1.1 and marshellow 6 and android 7.1 and don't know wether these ROM will work or not

As i have done in laptop and desktop I have installed different windows XP 7 8 10 and Linux OS installed and dedicated them for different functioning one for banking gaming studying downloading and can easily boot move to OS with boot menus

My queries

  1. HOW TO PRE TEST THE BOOT ROM BEFORE INSTALLING weather they are working properly or not

  2. As i know in mobile android is booted from ROM or internal memory. Have seen video article to SWAP external memory card as internal memory. Means can we swap cards and install OS in external memory card.

  3. Dont know if its possible or not.Want to do same in my smart phone with dual booting of OS of same or other versions in memory card or internal memory

  4. So in android I want a boot menu in my smart phone through which I/can boot to android 5.1.1 or android 6 or 7

  5. If Dual booting not possible then can I VIRTUALLY install or boot different boot ROM through any app kindly tell me which app is good and secure for virtual loading stock ROM

  6. Will dual booting or virtual booting will be harmful or may can damage Mobile device or harmful is there any safe secure method through which I can do it

  7. Can we secure hacking Ransome malware viruses of mobile data my mobile banking and passwords through differentiating OS and mange different OS for different work

Kindlly send me links videos through which I can learn steps for dual booting or virtual booting as I am novice in android installation

For safety I have created images backup of original stock ROM through adb fastboot DD if commands. TAken backup of Boot system userdata and mmcblk0

DUAL MULTI BOOTING TOOLS

Googled and founded many apps tools parches and articles but confused don't know which one is safe and secure tool way to dual boot and how to use those tools apps

But some limited devices are supported with these tools will they support in my mobile device or not

  1. BOOTMANAGER

  2. XDA DUAL BOOT PATCHER

  3. MULTIROM & VIRTUES

https://www.xda-developers.com/dual-boot-on-android-a-power-users-holy-grail/amp/

  1. efidroidmulti

  2. MULTIROM

https://urtechpartner.com/dual-boot-multiple-roms-android/

  1. TWRP multiboot

VIRTUAL ROM TOOLS

Googled and founded many articles apps on virtual ROM but confused don't know which one is safe and secure tool way to dual boot and how to use those tools apps

But some limited devices are supported with these tools will they support in my mobile device or not

  1. VMOS

  2. VirtualBox

  3. ROM Manager

  4. DRIVE Droid

My device phone is using

android lolipop 5.1.1 Architecture ARMV 71 (32 bit) Platform qcom Flash samsung Q823MB Processor Qualcomm snapdragon 205/208 1.27ghz CPU Cortex A7 Ram 2gb Internal memory 16gb External memory 64gb 128gb

Waiting for a professional experts advice and thanks a lot for your precious time and advice's and help

  • 1
    I am sorry but using an Android 5/7 device and worrying about security is a bit strange as those firmware images are most likely more than two/four years old. In any way Android can't be used the way you want. Even though some device have two OS installations (A/B slot) the user data partition always exists only once. My advice: If you really want to separate banking apps buy a second phone with regular security update support for the next 3 years and use it only for banking apps. – Robert Feb 24 at 10:23
  • See my answers to How to boot Ubuntu persistent live USB on Android? and Are multiple-users protected from each other differently than apps?. Almost all of your queries are answered there. – Irfan Latif Feb 24 at 10:46
  • @Irfan Latif thanx for your knowledgeable and sharing links I have edited my question and added some more details hope you can give more suggestions or advice regarding my question – Androidquery Feb 24 at 16:57
  • @IrfanLatif Reade'd your links have following queries How to check that my rooted mobile had locked BL, VB and AVB. Or not as fastboot and adb commands are running How to use EFIDroid i does it suppprrt my device and step to step use of EFIDroid to multiboot How to stop permissions for apps any app for stopping apps permissions will apps works if permissions stopped. – Androidquery Feb 24 at 17:00
  • @Robert Thanx for your advice for new phone will surely purchase one but will try some experiments with old one. As you have told Even though some device have two OS installations (A/B slot) the user data partition always exists only once... Kindly tell me those mobile devices which have two OS installation A/B slot which I will purchase next time – Androidquery Feb 24 at 17:05

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