Amazing Boyfriend At Basic

So it has been a week and half since my boyfriend has been in Ft. Leonard Wood for basic and it feels like the longest week and a half of my life. I missed his first phone call from a calling card while he was in reception which I still get upset over, more for his sake than mine. I just don't want him to think be worried about us, but I did get a few letters while he was in reception which brightened my day. I just wish I could send him my letters so he has a peace of mind. He was able to call me on the first day of basic from his cell phone though! It was only a 20 second phone call to tell me he started his first day of basic, he will write to me as soon as he can and that he loves and misses me. I was really shocked he was able to use his cell phone the first day of basic, has anyone else had the experience where their bf was able to use their cell at basic? I don't know if the first day isn't as harsh or something but I assumed it would be. I have not heard from him since his first day at basic, so almost a week now. I have been writing to him everyday even though I have not been able to send him anything yet. His mom said she got a post card on Monday from the base saying we should get his address within a week. I can't wait to get my letters out! I just hope he can read my letters right away. Does any one have any advice for me with your boyfriend being at basic? How often you have heard from him? I know to keep my phone on me at all times now. I could use some inspiration! I am really missing my man like crazy...