In GPA16 beta, what does CDMA over GSM mean??

[madspeed]

copied from Pete's changelog....what does this mean? ~~~~~>CDMA instead of GSM phone configuration (credit to cvpcs)

[EnJoY]

The Gingerbread build is based off of the Nexus S, which is a GSM phone, which both T-Mobile, AT&T and Cingular use. Sprint and Verizon use CDMA. It's just a difference in how data is handled, and it's one of the reasons why AT&T phones can do voice and data at the same time and Verizon cannot.

[madspeed]

I understand the difference between the two methods, but what does it mean cdma OVER gsm?

[rafiki1]

CDMA stuff over GSM stuff !!

[hyperdude]

I believe the answer you're looking for is that building a ROM in CDMA configuration as opposed to GSM configuration COULD help with network loss/recovery and overall data performance. That's my basic understanding of it.

It just keeps the ROM from being built thinking it's going to be on a GSM phone (where the network works differently than on CDMA)

[0vermind]

The Gingerbread build is based off of the Nexus S, which is a GSM phone, which both T-Mobile, AT&T and Cingular use. Sprint and Verizon use CDMA. It's just a difference in how data is handled, and it's one of the reasons why AT&T phones can do voice and data at the same time and Verizon cannot.

4G can do voice and data, and I talked to a Verizon Rep few days ago, and he told me that they are working on voice and data for 3G. Just to clarify.

[buellboy9]

The way I understand it, it means Pete can now build his custom code from code SPECIFICALLY written for a CDMA phone, instead of trying port over code written for a GSM phone and modify it to run on a CDMA phone.

[Networkgamer]

The Gingerbread build is based off of the Nexus S, which is a GSM phone, which both T-Mobile, AT&T and Cingular use. Sprint and Verizon use CDMA. It's just a difference in how data is handled, and it's one of the reasons why AT&T phones can do voice and data at the same time and Verizon cannot.

4G can do voice and data, and I talked to a Verizon Rep few days ago, and he told me that they are working on voice and data for 3G. Just to clarify.

Rather 3g or 4g, with or without wifi, I use voice + data on my revo. Maybe its a Revo thing, or verizon just updated it or changed it in some places. From what Ive read, it may be a special modem or combination of chips in the revo that allows it to do so.

[buellboy9]

The Verizon rep was blowing smoke. No way will the phone do voice and data simultaneously with their current 3G technology... and changing that technology would make ALL of their 3G phones obsolete and piss a LOT of their customers off. LTE is designed to allow both, but CDMA is not capable of it. The only way to do Voice and Data simultaneously on a 3G CDMA phone is to get the data on a WiFi connection.

[robojerk]

From what I've read about Verizon phones, all the current LTE phone still have CDMA antenna's.

CDMA for voice/sms
LTE for data

This is how they're able to do voice and data at the same time now.

In the future the plan is to do voice as VoIP and have that be treated as data as well. That will drop the need for a CDMA chip on the phone.