Hey, nice pic. I remember my first iPhone, actually, it was amazing. After a couple of Android telephones, it was really a big difference. That motivated me to become an IOS developer to create apps for iPhone and this is quite a hard job. I often read various developers' blogs and this article is my favorite one https://madappgang.com/blog/twilio-alternatives-how-to-integrate-messages-and-calls-into-your-app/ cause its a great guide about the integration of calls and messages into your app. I respect such authors that share their methods and solutions with us.