A problem when sending an SMS message in the Serbian language

[crazyCone]

1. When I want to send a text message "srećni novogodišnji isrećni novogodišnjisrećni novogodišnjisrećni novogodišnjisrećni novogodišnjisrećni novogodišnjisrećni novogodišnji božićni praznici" return me the result sent and not the message was not sent .
   I think the problem is that the text uses the Serbian keyboard. And when I send the same message "srecni novogodissji isrecni novogodisnjisrecni novogodisnjisrecni novogodisnjisrecni novogodisnjisrecni novogodisnjisrecni novogodisnji bozicni praznic".
2. Another problem is that when we write the phone number +38160sssss which is invalid, it returns the result that it has been sent