Which language do you have to learn for developing Phone Applications?

Question

Android PlayStore

Answer 1

You are welcome👍😊

Answer 2

Java and Kotlin are official languages for Android development.
Though Android apps can be written in other languages too.

https://www.androidauthority.com/develop-android-apps-languages-learn-391008/
https://www.sololearn.com/discuss/823823/?ref=app
https://www.sololearn.com/discuss/447092/?ref=app

Answer 3

thank you, very much appreciated