Question about how mobile phone works
Was just wondering about how phones actually work in terms of how they communicate with the network. Now that everything is digital, is there actually any difference in how the phone transmits info to the network eg for voice messaging vs VOIP over data plan. Are different bands used for data usage vs traditional talk usage? Or is it all the same and it's all just about how everything is billed. Say you have unlimited voice but finite data. You make a call using the built-in dialer, so it is "talk" usage, you can talk all you want. But then say you use Fongo instead, so you are now using an app which is using data. The former doesn't affect your bill, but the latter uses up data so it deducts that from your monthly limit.