My service provider added a charge of an sms which was sent to the local network of that country claiming that Apple charges from the network provider whenever the sim the changed or activated in an iPhone overseas. Is there anything like that ?

I got international roaming activated on my number . I travelled from India to Oman. After switching on my sim , there was an automatic SMS sent to the local network provider of Oman. ( This message was not no where being shown in my phone) . In my bill , there was a outgoing message which was charged. After inquiring with my service provider in India , they informed that Apple charges from the service provider . Hence , every time you change your iPhone or switch on your iPhone internationally , this charge would be added. Hence, to avoid such kind of issues , I should use an android phone .

Kindly let me know if there is any such charge which Apple takes .