[Sprint LG G3] lexOehm:
Here is some information about the ls990 data network

TECHNOLOGIES USED

GSM / CDMA / HSPA / EVDO / LTE

TECHNOLOGIES USED DEFINED

GSM

Global system for mobile (GSM) communication is a digital mobile telephony system that is widely used in Europe and other parts of the world. GSMuses a variation of time division multiple access (TDMA)

CDMA

Code division multiple access (CDMA) is a channel access used by various radio communication technologies. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single access channel.

HSPA

High speed packet access (HSPA) is a third generation (3G) mobile broadband communications technology. The term "HSPA" actually refers to two specific protocols used in tandem, high speed downlink packet access (HSDPA) and high speed uplink packet access (HSUPA).

EVDO

1xEV-DO is a 3G standard for CDMA-based networks, as a 3G technology it focuses on bringing high-speed data to CDMA. EVDO provides data rates over ten times faster than 1xRTT the previous data technology for CDMA networks.

LTE

Long term evolution (LTE) is a 4G wireless broadband technology developed by the third generation partnership project (3gpp) an industry trade group.

Bands used by the ls990

2G Bands

GSM 850 / 900 / 1800 / 1900

3G Bands

HSDPA 850 / 1900 / 2100

4G Bands

LTE Bands 25 (1900) / 26 (850) / 41 (2500)

DATA TRANSMISSION SPEED

HSPA, LTE Cat4

150 / 50 Mbps

I don't know what protocol Band-3 is set up for. So I cannot answer your question directly. What I can tell you is that the coding you are looking for should be part of your CDMA. The CDMA gets the two signals (your phone and the band) to share a frequency. I don't know how this is achieved. If you know how to access the CDMA programming and know the precise frequency your desired band is broadcasting at you very well, at the very least change an existing port to a different frequency.

I don't know if you would be able to just add in coding and expect it to work. That's because I don't actually know if the phones use multiple ports (one for each frequency) or if it cycles through the programmed frequency using one piece of hardware.

I hope at least some of this information is able to help you out. If you do end up attempting to rewrite a CDMA, let me know how it goes. Honestly if it works, I'm going to be asking you for information.

---------- Post added at 04:03 PM ---------- Previous post was at 03:52 PM ----------

I'm just a regular guy but try looking through all of the forums and threads. Just search CDMA (make sure you select find anywhere in text if you use a web browser. Then you can use your browser's tools to "find in page" again search CDMA. This will highlight every time "CDMA" appears on the page. Then you can scroll through them by pressing on the arrows on the find in page tool. Of you can't find anything in any of the posts on this site, there could be the chance that the developers are not interested in altering their CDMAs. Keep in mind it is common advice to never alter your "daily driver" the cell you rely on.

Other than that the only I formation I know about it is what I was told by a guy who flashes phones for a prepaid provider where I live. He told me that not every phone is able to hook up to the bands of the other carriers. That's why he had a sign that stated data service is not guaranteed on all phones.