@AppLee
Well, after more missed calls this evening, it seemsd the updated sim didn't do anything.
But what i have noticed is that the issue (for the phone calls at least) seems to be related to being on 4G. When the phone was in 2G/3G/4G mode (mobile settings indicate that, and i see an "L" as my network), i would not get the call or texts. When i switch settings to 2G/3G only, the texts come through a moment later and the phone call comes through. If i switch back to 2G/3G/4G, and on "L" the issue returns.
Now, i've been on the 2G/3G/4G setting for months. I know my provider (Freedom) supports it (or at least they claim they do), but this has only become a serious problem lately.
I think today i need to go to a Freedom store and try getting a new sim; i can't think of anything else to try. If that doesn't work, then it'll be time to change providers i guess.
Any ideas otherwise?
-Fizz