Cell Phones

Question about how mobile phone works

  • Last Updated:
  • Jun 4th, 2016 5:37 pm
Deal Addict
Feb 18, 2016
1808 posts

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.
2 replies
Deal Addict
Feb 14, 2016
1754 posts
I'm not sure 100%; but I thought they use different frequencies; like if you block the data on your phone; it block LTE signals but you can still call/text
Deal Expert
User avatar
Jun 12, 2007
16324 posts
Hofo is probably the best place to ask tech questions

AFIK, 2G (GSM and CDMA) and 3G/4G (HSPA/UTMS/WCDMA) have separate voice and data bandwidth (within the same frequency band). Even though voice is digital, it's not packetized like data nor is it mixed with data traffic. LTE is just for data right now. Your phone switches back to HSPA automatically to do voice calls

It's only when the carriers convert to Voice over LTE (VoLTE) does voice traffic become packetized and carried like data traffic

Even with VoLTE, the carriers do their own voice traffic priority inside their networks. We end users won't have access from the outside to run our own voip