Imessage activation problem
Hello please i need help. Couple of days ago after i’ve changed my phone from iphone 6 s to iphone 10 it is impossible to activate imessage on my phone number which remains same. First of all i’ve checked internet connection (both) than phone settings and so on. After i’ve visited office of my provaider where they told me that there was no problem but problem remains unsolved because imessage is still disabled. please help me with activation. Thank you in advance
iPhone X