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android - Read Data From Firebase database

I want to read specific data from firebase database. What I am currently doing is here.

DatabaseReference database = FirebaseDatabase.getInstance().getReference();
DatabaseReference myRef = database.child("profiles/");

myRef.child(phoneNo).addListenerForSingleValueEvent(new ValueEventListener() {
    @Override
    public void onDataChange(DataSnapshot dataSnapshot) {
        user = dataSnapshot.getValue(User.class);
    }

    @Override
    public void onCancelled(DatabaseError databaseError) {}

});

enter image description here

Method to write to DB

public void writeToDBProfiles(Object data,String phoneNo) {
    DatabaseReference database = FirebaseDatabase.getInstance().getReference();
    DatabaseReference myRef = database.child("profiles/" + phoneNo);
    myRef.setValue(data);
}

But its returning null... Any help will be appreciated.

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