What are the best apps for having additional phone numbers on a Samsung Galaxy S8 phone besides Google Voice?

I am looking to link another phone number to my Samsung Galaxy S8 cell phone. I already have Google voice installed on this phone and need to add yet another phone number to this phone.

What are the best Android apps for doing this?

I just signed out of a Google Voice account on my Samsung Galaxy S8 phone.

I have logged in with another Google Voice account which is the one I want to have associated with my cell phone.

The problem is that when I make phone calls using my Samsung Galaxy S8 phone the caller ID for the most recent Google Voice account (510-xxx-xxxx) displays instead of the caller ID for the other Google voice account I have switched back to (415-xxx-xxxx).

I also remember that when I have set up Google Voice numbers in the past that these Google Voice numbers have given me the option to fully integrate Google Voice with my Sprint PCS phone (which is what I want to do now). However I am not given this option at this time.

What do I need to do to fix this issue so that the phone number associated with my 415 area code Google voice number will display whenever I make phone calls?

I heard iOS is tailored from FreeBSD so I'm hoping to be able to do something like
"ps -ef |grep email_client_process"
if it's not there, then restart it.

Reason is our MobileIron email+ client kept getting killed by iOS as iOS sees it
as a 3rd party/foreign process.

any chance of doing this on an MDM controlled device?

hi i have a sansung j--106 and i want it will start the app very specific app in the reboot how can i do that ?

hi,
can you please advise
best free / cheap way to copy files from windows 10 pc to iphone 7.

i have about 100 gb mp4 video movie files to transfer

Thanks

1. What does it mean for  "tools:context="com.abc.passingdata.MainActivity"  ? (sample 1)
2. What does it mean for the following XML statement ? For "action", does it refer to the corresponding java class. How does "category" defined in sample 2 ? Any special meaning ? Thx

            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />  

           <action android:name="com.abc.usingintent.SecondActivity" />
            <category android:name="android.intent.category.DEFAULT" />
   
SAMPLE 1
-------------
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:orientation="vertical"

    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.abc.passingdata.MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Welcome to the Second Activity"
        android:id="@+id/textView" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Click to go to Main  Activity"
        android:id="@+id/button"
        android:onClick="onClick"/>

</LinearLayout>

SAMPLE 2
--------------
        <activity …

Hello

I understand with the Samsung S8 that there is the ability to view more than one app on the screen at the same time

Some questions

1. I know Mac can do this, can IOS iPhone and iPad

2. When I try this on a Samsung S8, i always seem to get the Settings as the first app and then any other app as the second. How can I get two real apps to run in multi screen

android 7
will i get app alerts , phone calls , sms when battery is on
medium?
supersaver with black screen?

Looking for general direction. I'm researching how one would develop a phone app with following requirements. IOS and Android. Or only IOS if that would be easier as a minimum viable product.

I'm a programmer (VB, SQL, ADO, ASP) .... but, a phone app newbie.

My Vision
The app would playback music of approx 3 mins long, that has (say) 5 multi-tracks - up to 4 vocal tracks and 1 track of backing instruments.
A graphic of the vocal parts will scroll across the screen (in landscape). It will look something like this.

The horizontal bars represent the notes in a 3 part harmony. The screen will scroll as the music plays. (eg. as in the app Anytune Pro)

It will be possible for the user to Mute/Unmute each track by pressing a button, as the music in playing. (eg. as in the app Sing Harmonies see at 2:10 in this video https://www.youtube.com/watch?v=hr6Xw9JPQe8 - however, in that app there is no graphic of the notes)

The user will be able to sing along with phone mic and hearing through headphones. (eg. as in the app Acappella). He/she can learn from the playback, then mute the part, and sing along with the other parts to practice.

Question: where should I look for a basic entry into learning about developing this kind of app? It involves music playback, individually mutable mutitracks (streamihg or downloaded), scrolling visual, use of mic.

Thanks.

I'm trying to run commands in command prompt on PC,

npm install -g cordova
cordova platform remove <platform>
cordova platform add <platform>

The NPM part works fine, but when i try to run cordova lines it fails with unknown command cordova. I do have cordova installed since I use it in VS and can deploy to android and ios. I realise I'm somehow missing the path in system path but I cannot find anywhere on the net or computer where the cordova root is. Can anyone help?

Thanks,
Primoz

I have been trying to follow a number of youtube videos instructing on the installation of cordova developmet environment on windows 10.

All time i get some sort of error, in trying to the the hello world example. So clear everything down.

Does anyone have a concise set of instructions in sequence to install this from scratch, im not interested in the android studio as will be using as text editor.

Many thanks