You ask me how I answer you. Here we can only share what we have experienced.
Obviously if you think about it, TnG needs to reduce fraud, and there's only so much information they can rely on. One of the easiest is if got multiple account on one phone, since easy for them to detect that.
Whether fair or not... the bonuses that you'll lose aren't legally belonging to you anyway, so its not like you 'deserve' it.
For me, if just wanna claim etunai then use a wallet which you yourself don't have/use (if applicable) or use some old burner smartphone. Don't spoil your own phone and account. If you want to be nasty, borrow your cousin (someone you don't like) phone for a day, apply there, spend on petrol, and give back.
If that sounds like too much hassle for RM30 then just leave it la, no loss. It's not RM30 cash anyway, you have to 'spend' it somewhere.
ok thanks.
Then I find some other old phone that can run on that.