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Changing the CDMA Radio

I just got off the phone with Telus and what they told me is that they are releasing ANOTHER TP2 on the GSM network and that I would have to buy another phone TP2 just to get onto the GSM network.
This being said, is there any way to modify the radio signal in my CDMA phone to read both CDMA and GSM, or atleast get more speed out of my phone for connectivity to the net?
*update
I just got off the phone with HTC and the lady I spoke with told me, that to change the radio frequency I just had to change the ROM. That being said IF, I put a Telus HSPA ROM on there the phone should be capable of working on the network. Now that being said. If this is possible would it not be possible to run on both networks, CDMA and HSPA, making the signal control software dependent, meaning I have CDMA controls for standard phone calls and HSPA for running the highspeed network?

Update in previous post.

Eazy, just HardSPL and security unlock your radio bro...Only then you can use the GSM networks in your country (I'm guessing it's US)
But you can only activate one at a time. Either GSM only or CDMA only..CMIIW..
Just my 2 cents

Actually it's Canada
Right but if I unlock the phone, and switch it back and forth on and off the networks, how would that affect my account, could I hide the fact i was doing this?

slight22 said:
Actually it's Canada
Right but if I unlock the phone, and switch it back and forth on and off the networks, how would that affect my account, could I hide the fact i was doing this?
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I have this phone on Telus...I got it unlocked and I put my work sim card in this phone and it's on rogers. I switch networks when necessary....If you get a Telus sim card you would be able to use it GSM.

You should be able to pick which network you use. I saw it in phone settings, I think.

bundybp said:
I have this phone on Telus...I got it unlocked and I put my work sim card in this phone and it's on rogers. I switch networks when necessary....If you get a Telus sim card you would be able to use it GSM.
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TELUS does not provide GSM at all. They are CDMA and UMTS.

So does this mean its possible. If i have a CDMA Sprint HTC Touch pro 2. That i have the potential of using it on At&t in the US?? All i have to do is unlock it?? Any information would be greatly appreciated.. Thanks!!

And if one does unlock a radio on said Telus phone, can one use both radio frequencies, thus enabling both CDMA and HSPA frequencies?

Spike15 said:
TELUS does not provide GSM at all. They are CDMA and UMTS.
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So Telus new 3G network is not GSM? It does have drop down menu showing "Send SMS over" GMS and CDMA. GSM is selected by default.

Force telus to bell

Ok, I have tried the registry editor for sprint to force to roaming....the reason I want to do that, is because I'm in southern Ontario, and the Bell network is using HSPA (which is a lot faster), its under my understanding that I would not get billed for roaming if I am using a bell tower.......Thank you

the HSPA network is gsm and you are running cdma. So unless you get a bell sim card I don't see this happening.

drewcam888 said:
the HSPA network is gsm and you are running cdma. So unless you get a bell sim card I don't see this happening.
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and i dont think you get 3g on gsm?

correct i doubt the phone supports the bell 3g gsm band

Adding Verizon to Network Operators?

I unlocked my MyTouch 4g (Glacier) and I want to use my Verizon sim card in it but it does not detect Verizon in the network operators. How do I get verizon on there? Is it possible? I thought unlocking it would allow me to do this.

http://tinyurl.com/4zwoaoo
Verizon does not use 'SIM' cards
as 'SIM' cards are used for GSM networks and Verizon is a CDMA provider
http://tinyurl.com/4zwoaoo

I did google this extensively. The phone that I have here is on the verizon network and has a sim card. Why would I make that up?

houseonfire said:
I did google this extensively. The phone that I have here is on the verizon network and has a sim card. Why would I make that up?
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Verizon is a CDMA network. The SIM card is there because the phone you have also has a GSM radio for traveling overseas. However, just because it says "Verizon" on the SIM card doesn't mean your phone connects to Verizon when you roam. It's actually connecting to Vodafone when you're roaming in most countries. That's what the SIM card slot is for. Now if you unlocked that phone, you could use it on T-Mobile or AT&T if you set it to GSM Mode.
That Verizon phone will work in the US and Canada whether or not that SIM card is in there. It's impossible to get a GSM phone (your MyTouch 4G) to work on a CDMA network (Verizon).

Product F(RED) said:
Verizon is a CDMA network. The SIM card is there because the phone you have also has a GSM radio for traveling overseas. However, just because it says "Verizon" on the SIM card doesn't mean your phone connects to Verizon when you roam. It's actually connecting to Vodafone when you're roaming in most countries. That's what the SIM card slot is for. Now if you unlocked that phone, you could use it on T-Mobile or AT&T if you set it to GSM Mode.
That Verizon phone will work in the US and Canada whether or not that SIM card is in there. It's impossible to get a GSM phone (your MyTouch 4G) to work on a CDMA network (Verizon).
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Thank you for the real explanation and not being a jerk about it, as I did not know this.
It sucks that I cant use it but now I know.

Verizon GS3 "World", "GSM", or ???

The GS3 Verizon is a CDMA device. Supposedly it has GSM compatible radios too. It's supposed to be able to work on GSM networks after a software update coming soon. Does this thing have a sim card slot? I don't see how it would work on GSM networks without it. Does anyone know how this works?
I'm hoping to use it on Verizon in USA, but on Telcel while in Mexico BUT with my Telcel sim. I realize my hopes are slim but if there's a sim card slot maybe it's possible???
Thanks.

ckinninger said:
The GS3 Verizon is a CDMA device but it's supposed to be able to work on GSM networks after a software update coming soon. Does this thing have a sim card slot? I don't see how it would work on GSM networks without it. Does anyone know how this works?
I'm hoping to use it on Verizon in USA, but on Telcel while in Mexico BUT with my Telcel sim. I realize my hopes are slim but if there's a sim card slot maybe it's possible???
Thanks.
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It has a SIM card slot for the LTE. Unsure about compatibility though.

seoulstyle said:
It has a SIM card slot for the LTE. Unsure about compatibility though.
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Actually, I have an old Verizon Motorola Z6c World Phone here that I bought in 2008. It has a Verizon sim card inside.
Z6c Specs say:
2G Network GSM 900 / 1800
3G Network CDMA 1xEVDO (800 / 1900 MHz)
Anyway, there's no LTE involved on the Z6c back then. SO apparently the GS3 will need the sim on non CDMA networks. I just wonder if the software experts here can make it possible to use the sim only at certain times and at the same time unlock the phone.
A lot to ask but will be a huge feature if done.

ckinninger said:
Actually, I have an old Verizon Motorola Z6c World Phone here that I bought in 2008. It has a Verizon sim card inside.
Z6c Specs say:
2G Network GSM 900 / 1800
3G Network CDMA 1xEVDO (800 / 1900 MHz)
Anyway, there's no LTE involved on the Z6c back then. SO apparently the GS3 will need the sim on non CDMA networks. I just wonder if the software experts here can make it possible to use the sim only at certain times and at the same time unlock the phone.
A lot to ask but will be a huge feature if done.
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I said earlier that I wasn't sure about compatibility, but I'm starting to believe that this is not possible, as the Verizon version lacks the proper GSM/HSPA+ radios. There's a model comparison chart that you can expand on the Wikipedia page. Software probably won't be able to pull the miracle you're asking for. Sorry
http://en.wikipedia.org/wiki/Galaxy_S3

Maybe this will help? http://androidcommunity.com/verizon-may-enable-global-roaming-on-lte-phones-soon-20120518/ from what I gather LTE is based off of GSM and its just a matter of unlocking the GSM bands on the phones.

seoulstyle said:
I said earlier that I wasn't sure about compatibility, but I'm starting to believe that this is not possible, as the Verizon version lacks the proper GSM/HSPA+ radios. There's a model comparison chart that you can expand on the Wikipedia page. Software probably won't be able to pull the miracle you're asking for. Sorry
http://en.wikipedia.org/wiki/Galaxy_S3
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The SCH-i535 did recieve GSM certification for bands 850 and 1900. No HSPA+ though.

bbeelzebub said:
The SCH-i535 did recieve GSM certification for bands 850 and 1900. No HSPA+ though.
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Yeah, I don't think the current specs out on the GS3 are totally complete. If the phone is admittedly needing a software update to allow the GSM roaming then they can't just put those bands in the specs with no caveats.

[Q] Switching between Sprint CDMA and GSM SIM cards and back again

I currently am using my nexus 5 (unlocked from Play Store) on sprint and I will be going out of the country for a couple weeks and want to use a local SIM card when I get there. I have a couple questions.
1) what do I need to do to switch from Sprint CDMA and LTE SIM to a foreign GSM SIM?
2) once I get back in the country what do I need to do to switch from the from the foreign GSM SIM back to my Sprint CDMA and LTE SIM

Just simply swap the sims.

That's it? No changing anything in the settings or calls to sprint? Seems too good to be true. Glad I chose a Nexus!

dplcj said:
That's it? No changing anything in the settings or calls to sprint? Seems too good to be true. Glad I chose a Nexus!
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Um.... Not sure how this would work considering sprint doesnt use sim cards?

brokenbmx06 said:
Um.... Not sure how this would work considering sprint doesnt use sim cards?
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Sprint dose have a SIM card for LTE on the NEXUS 5.