Database Users

Unlocked Imagio gives no signal on GSM

Hi! I bought my Imagio from verizon I unlocked it, but it doesn't recieve any GSM signal, the settings are on GSM/UMTS anyone has an idea how to resolve a problem... By the way is anyway to cook this?

I need to unlock my phone before I travel in a few days, how did you unlock your phone?

akomecr said:
Hi! I bought my Imagio from verizon I unlocked it, but it doesn't recieve any GSM signal, the settings are on GSM/UMTS anyone has an idea how to resolve a problem... By the way is anyway to cook this?
Click to expand...
Click to collapse
Do you have a working SIM card from AT&T or T-Mobile in the SIM slot?
bastukee said:
I need to unlock my phone before I travel in a few days, how did you unlock your phone?
Click to expand...
Click to collapse
Call VZW and ask.

On ebay it's a ton of services about whitestone unlock, and my problem was an issue on the operating band of GSM for example in the USA you must use 950/1900 on other countries like Costa Rica you need 1800, thanks to all for your help

You should be able to contact VZW and have them unlock it so you can use whatever carrier SIM you have for the country/area you are in. The stock SIM is Vodaphone and I think will only work where Vodaphone service exists. Otherwise make sure the phone is in Global and not CDMA only. Go to the Settings Tab, click Menu then select Phone Network Mode select Network tab.

I called verizon and they gave me codes to unlock both my phones. I slapped an ATT sim into my imagio and it was working on the ATT network, no problem at all.

Hi, where do you enter the sim unlock code on Imagio?
Thanks.
devlspawn said:
I called verizon and they gave me codes to unlock both my phones. I slapped an ATT sim into my imagio and it was working on the ATT network, no problem at all.
Click to expand...
Click to collapse

I just got off the phone with Verizon in regard to this.
Below is what I found. The Global Verizon Rep will be happier if you enter the code while you are on the phone with them; they want to verify that it works. It actually took about 10 minutes.
Here is what I found: http://pdaphonehome.com/forums/htc-imagio/138569-how-unlock-verizon-imagio-sim-card.html
If you are going to be traveling abroad or simply want your Imagio to be unlocked its very easy to do and should only take about 3-5 minutes on the phone with Verizon.
Call 1(800)-711-8300 from a different phone, enter your Verizon phone number, then select option 2.
Tell them that you will be traveling abroad and plan to just buy a pre-paid SIM card when you get there, and that you simply need the unlock code for your phone. They will check your account standings, and then give you an 8 digit code.
You need to enter the code in the security section of your phone.
With TF3D...
Start>Settings> All Settings> Personal> Security
Without TF3D Enabled...
Start> Settings> Personal> Security
One you do this, soft reset your phone and you are all done. I can take my work phones SIM card (AT&T), put it in my Imagio, and use my Imagio for work now. I did not test the data yet because I do not have data on my AT&T plan. Although if anyone does this and wants to check it, keep in mind you will have to change the number for the data line. both Sprint and Verizon use #777. I am not sure what AT&T or TMobile use.

I have an Imagio from VERIZON.
I had unlocked the GSM network, Should I Unlock the CDMA network as well if I want to use the CDMA Net work?
or I jus need 1 unlock code for both GSM and CDMA?
So, I will have 2 no. in 1 phone one is injected, and another one is using sim card.

“Answered but not Perfected” Getting the Droid 2 Global to work on USA GSM

I was at at&t and we where unable to activate the phone even though the phone is capable. At&t said everything was good on there end but the phone just wont get a signal but it says it is on at&t.
Does anybody have any ideas how to fix this?

Have u unlocked the sim slot on the phone?

swangotp said:
I was at at&t and we where unable to activate the phone even though the phone is capable. At&t said everything was good on there end but the phone just wont get a signal but it says it is on at&t.
Does anybody have any ideas how to fix this?
Click to expand...
Click to collapse
Quite a few people (including myself) on various boards have acknowledged having this problem as well. I got the SIM unlock code from Verizon but when I do a GSM network scan, nothing is detected. I know it has been escalated above level 2 support at Motorola and hopefully they will address it shortly. Here's another thread about it over on droidforums: http://www.droidforums.net/forum/droid-2-global/96596-droid-2-global-unlock-foreign-sim.html

Yes, I have unlocked the phone from the code verizon gave me.

I hope its a fixable problem. But I noticed when I use an active tmob sim the phone doesnt even say tmobile. But when I use an at&t sim it atleasts says at&t.

I'm very interested (as I'm sure many others are) in a resolution to this. OP did you call VZW global support and let them know you're having this problem? Hopefully the more they hear about it, the faster they'll have a fix

SGMD1 said:
I'm very interested (as I'm sure many others are) in a resolution to this. OP did you call VZW global support and let them know you're having this problem? Hopefully the more they hear about it, the faster they'll have a fix
Click to expand...
Click to collapse
They where no help at all they said it was for foreign sim cards only and that at&t and tmobile where not supported. But they did say verizon was better than both of them combined.

If you feel like experimenting try this:
Go to dialpad, and enter *#*#4636#*#*
Click on Phone Information, and then scroll down to bottom. Set preferred network type from "CDMA auto(PRL)" to "WCDMA preferred" and see if that kicks it on ATT.

I'm 99.9% sure after looking through the user guide that VZW has restricted use of the 850/1900 MHz GSM/UMTS bands, even though the device has the hardware to support them. Most foreign networks use 900/1800 GSM and 2100 UMTS but AT&T/T-Mobile use 850/1900, which is why no one has had any success with them yet.
Hopefully someone can figure out a workaround.
EDIT: Just a US GSM restriction...looks like 850/1900 work abroad: http://www.droidforums.net/forum/dr...d2-global-south-america-first-impression.html

IslesFan said:
If you feel like experimenting try this:
Go to dialpad, and enter *#*#4636#*#*
Click on Phone Information, and then scroll down to bottom. Set preferred network type from "CDMA auto(PRL)" to "WCDMA preferred" and see if that kicks it on ATT.
Click to expand...
Click to collapse
These where the results I got, so clearly it is getting seeing the network. Just not connecting.

Just got off the phone with Motorola and they said the droid 2 global was only for verizon sim cards and when I told them about the unlock code the guy didn't know what they where for. So another dead end. Another theory I have is that the stock verizon rom is blocking at&t so maybe if someone can flash another rom we can see if this is the problem.

Further proof the 850/1900 bands are locked: https://motorola-global-portal.custhelp.com/app/answers/detail/a_id/57058/p/30,6720,7706
"GSM-based global services work only with a SIM card supplied by Verizon Wireless® or by another GSM 900 or GSM 1800 service provider. When you set your phone to use a GSM 900 or GSM 1800 network you may be prompted to enter a subsidy code. To get this code, contact Verizon Wireless."
EDIT: Looks like they're just locked in the US, not abroad: http://www.droidforums.net/forum/dr...d2-global-south-america-first-impression.html

SGMD1 said:
Further proof the 850/1900 bands are locked: https://motorola-global-portal.custhelp.com/app/answers/detail/a_id/57058/p/30,6720,7706
"GSM-based global services work only with a SIM card supplied by Verizon Wireless® or by another GSM 900 or GSM 1800 service provider. When you set your phone to use a GSM 900 or GSM 1800 network you may be prompted to enter a subsidy code. To get this code, contact Verizon Wireless."
Click to expand...
Click to collapse
If this is true why would they say it has the 850 and 1900 bands? I know its not a hardware problem, so if its a software problem there is a chance we can have a workaround. Or the locked bands might be because of the verizon rom.

I was able to put a new rom on my Droid 2 Global and although the rom was working since it was for a droid 2 the radio was not working properly. I was not able to force turn it on. I still have several more things I will try tonight.

swangotp said:
I was able to put a new rom on my Droid 2 Global and although the rom was working since it was for a droid 2 the radio was not working properly. I was not able to force turn it on. I still have several more things I will try tonight.
Click to expand...
Click to collapse
Keep us posted!

This has been done before on Windows Mobile phones (CDMA HTC Touch Pro 2) and requires a radio reflash since the bands are locked in the radio firmware. I am hoping they will develop a solution for Android phones. http://rhodiumw.htc-unlocks.com/
Being that this the 1st CDMA/GSM (Tie if you count Droid Pro) Android device I would wait and see.

firebrain said:
This has been done before on Windows Mobile phones (CDMA HTC Touch Pro 2) and requires a radio reflash since the bands are locked in the radio firmware. I am hoping they will develop a solution for Android phones. http://rhodiumw.htc-unlocks.com/
Being that this the 1st CDMA/GSM (Tie if you count Droid Pro) Android device I would wait and see.
Click to expand...
Click to collapse
Good info, thanks

As from what I learned from previous devices the Droid 2 Global Verizon has a security locked radio. I have seen people unlock the radios from windows mobile phones, it is as easy as installing a .zip file that will unlock the security. I believe it is the same way with the Droid 2 Global. I will try to get this working but I don’t have much knowledge in the development field. But I do know you will have to be rooted. I have also spoke with a friend at Verizon, which claims that they did indeed lock the radios and there is a workaround. He said he was not familiar with this workaround but said it was close to the problem with the windows mobile security locked devices. I am calling this the official reason the phone wont work with US networks. This makes sense, and now that we found the problem it shouldn’t be long before we find a way around it.

Thanks for the info swangotp...that definitely sounds promising. Keep us posted!

subscribing to this thread... I know this is possible.

Verizon Moto g4 unlocked by Verizon

Has anyone who bought the g4 play Verizon version noticed the unlock policy says either use the phone for one year or make $75 in payments? I'm wondering if Verizon actually unlocks the device will it enable the 3g bands they are there but they're blocked. Has anyone actually had Verizon unlock this device?

How do you know that the 3G HSPA+ bands are present? The specs I've seen only list quad-band GSM, dual-band CDMA, and LTE bands 2, 4, 5, 13.

Ohk I got my Moto g4 unlocked and I actually got it to dial out the problem is I think because my phone is still on it kept taking me to Verizon my service was T-cdma and I couldn't find where I could input APN settings

snoopy1e11 said:
Ohk I got my Moto g4 unlocked and I actually got it to dial out the problem is I think because my phone is still on it kept taking me to Verizon my service was T-cdma and I couldn't find where I could input APN settings
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Click to collapse
How did you get it unlocked?

I got the code from Verizon

chi321 said:
How did you get it unlocked?
Click to expand...
Click to collapse
I got the code from Verizon all u have to do is make $75 in payments and they'll unlock it but I tried it with at&t and T-Mobile and with at&t u don't get the same options as u do with T-Mobile so if it was gonna work T-Mobile would be the best bet to try

snoopy1e11 said:
I got the code from Verizon all u have to do is make $75 in payments and they'll unlock it but I tried it with at&t and T-Mobile and with at&t u don't get the same options as u do with T-Mobile so if it was gonna work T-Mobile would be the best bet to try
Click to expand...
Click to collapse
I notice that you have advanced 4g lte.
When I tried to get that option through Verizon they told me it was not available on this phone.
Obviously the phone is capable of this feature.
Did you get advanced 4g lte after unlocking it with the code on Verizon or because you are using a T-Mobile sim?

classic757 said:
I notice that you have advanced 4g lte.
When I tried to get that option through Verizon they told me it was not available on this phone.
Obviously the phone is capable of this feature.
Did you get advanced 4g lte after unlocking it with the code on Verizon or because you are using a T-Mobile sim?
Click to expand...
Click to collapse
Only when I insert a T-Mobile sim it doesn't even pop up when I insert an at&t sim and if u remove the battery while it's on the charger and insert any other sim it automatically greys out

snoopy1e11 said:
Only when I insert a T-Mobile sim it doesn't even pop up when I insert an at&t sim and if u remove the battery while it's on the charger and insert any other sim it automatically greys out
Click to expand...
Click to collapse
Okay, so the phone has the capability but only through T-Mobile it seems.
Verizon and AT&T must have some sort of block on their network so the feature can't be used on the xt1609. Why, idk.
Makes no sense to me.

In order to be able to dial out you have to change the CDMA Subscription to NV if not you'll get "sim error or no sim" but the calls are still over 1x. Also for whatever reason different sims make the phone act differently. At&t sims only give u an option for APN, if you use a T-Mobile sim long as you change the network mode from LTE to 3g or 2g you get options to change cmda subscription, APN, advanced 4glte, search for networks etc. My network was always T-Cdma on T-Mobile long as I changed to NV while on at&t no signal pops in at all

classic757 said:
Okay, so the phone has the capability but only through T-Mobile it seems.
Verizon and AT&T must have some sort of block on their network so the feature can't be used on the xt1609. Why, idk.
Makes no sense to me.
Click to expand...
Click to collapse
I'm gonna try again once my month is up if I'm not mistaken CDMA is programmed in the phone so that could be a reason I'm having trouble but I also thought that if I remove the sim the CDMA portion would still work which is not the case but either way all my calls are routed to Verizon

snoopy1e11 said:
I got the code from Verizon all u have to do is make $75 in payments and they'll unlock it but I tried it with at&t and T-Mobile and with at&t u don't get the same options as u do with T-Mobile so if it was gonna work T-Mobile would be the best bet to try
Click to expand...
Click to collapse
Have you ever tried the method which worked with the prepaid Verizon Moto E phone https://forum.xda-developers.com/mo...-to-verizon-moto-e-2015-gsm-network-t3098953?

I haven't tried it but I think I read somewhere that it didn't work as a matter of fact it doesn't work

Flash Verizon S8 with european firmware

Hi guys,
I bought a Verizon s8 in the states and wanted to use it in Europe. I live in the Netherlands, so I swapped in my Vodafone some instead of using the Verizon Sim and everything works fine besides mobile data. I can not change the APN settings as they are locked. Carrier says it's Verizon though it's using the Vodafone Network.
So I was wondering, can I flash the firmware with a european version to get access to the APN settings and remove the carrier lock?
Best

the s8 verizon is not locked just put your sim card in and thats it.you cannot flash international rom on the us version odin wont let you it will fail even if you somehow made it it will brick the phone.the reason is because the us s8 version uses snapdragon chipset and the s8 international version uses exynos chipset they are completely different.
the option you have is to flash the us unlocked version to the verizon s8 i did on mine i have verizon also.

brigantti said:
the s8 verizon is not locked just put your sim card in and thats it.you cannot flash international rom on the us version odin wont let you it will fail even if you somehow made it it will brick the phone.the reason is because the us s8 version uses snapdragon chipset and the s8 international version uses exynos chipset they are completely different.
the option you have is to flash the us unlocked version to the verizon s8 i did on mine i have verizon also.
Click to expand...
Click to collapse
I was wondering is there a way to add more international languages on my s8+. I have managed to change parts of it but on menu and while scrolling in facebook it doesn't recognise i.e some norwegian / turkish letters and doesn't switch language in parts of menu.
The model i have is G955U1 ?
Thanks again.

Tv87 said:
Hi guys,
I bought a Verizon s8 in the states and wanted to use it in Europe. I live in the Netherlands, so I swapped in my Vodafone some instead of using the Verizon Sim and everything works fine besides mobile data. I can not change the APN settings as they are locked. Carrier says it's Verizon though it's using the Vodafone Network.
So I was wondering, can I flash the firmware with a european version to get access to the APN settings and remove the carrier lock?
Best
Click to expand...
Click to collapse
Tv87, I am in the exact situation as you. Have you resolved your problem? If so, what was the solution?
I just moved to the Netherlands a few weeks ago and switched my S8's SIM Card from Verizon to Vodafone. Everything worked fine except for mobile data. The Vodafone rep told me that my APN settings were grayed out / locked; therefore, until they could be edited, my phone would not receive mobile data.

SanDiego31 said:
Tv87, I am in the exact situation as you. Have you resolved your problem? If so, what was the solution?
I just moved to the Netherlands a few weeks ago and switched my S8's SIM Card from Verizon to Vodafone. Everything worked fine except for mobile data. The Vodafone rep told me that my APN settings were grayed out / locked; therefore, until they could be edited, my phone would not receive mobile data.
Click to expand...
Click to collapse
They are not locked, the phone still thinks it has a verizon sim and that's why you cant edit the settings, do a complete factory reset.
And anyways, even with editable apn settings you wont get lte, because your s8 is lacking the european lte bands.

nikexv2 said:
They are not locked, the phone still thinks it has a verizon sim and that's why you cant edit the settings, do a complete factory reset.
And anyways, even with editable apn settings you wont get lte, because your s8 is lacking the european lte bands.
Click to expand...
Click to collapse
What makes you say that?
https://www.phonearena.com/news/Che...on-T-Mobile-and-Sprint-use-in-the-USA_id77933
Says:
"In Europe, most carriers base their networks on bands 3 (1800 MHz), 7 (2600 MHz) and 20 (800 MHz). China, on the other hand, uses a whole different 4G LTE standard - while the Western world has rolled out FDD-LTE networks, China and large parts of Asia use TDD-LTE."
And several places online show all those as being supported on the g950u.
Example source:
https://www.frequencycheck.com/mode...xy-s8-td-lte-sm-g950u1-sm-g950w-samsung-dream
Am I missing something?

wildermjs8 said:
What makes you say that?
https://www.phonearena.com/news/Che...on-T-Mobile-and-Sprint-use-in-the-USA_id77933
Says:
"In Europe, most carriers base their networks on bands 3 (1800 MHz), 7 (2600 MHz) and 20 (800 MHz). China, on the other hand, uses a whole different 4G LTE standard - while the Western world has rolled out FDD-LTE networks, China and large parts of Asia use TDD-LTE."
And several places online show all those as being supported on the g950u.
Example source:
https://www.frequencycheck.com/mode...xy-s8-td-lte-sm-g950u1-sm-g950w-samsung-dream
Am I missing something?
Click to expand...
Click to collapse
I said that because most phones that verizon sells dont have the lte bands for europe, but according to frequency check, it is compatible !
Sorry about the error

nikexv2 said:
I said that because most phones that verizon sells dont have the lte bands for europe, but according to frequency check, it is compatible !
Sorry about the error
Click to expand...
Click to collapse
Maybe next time check before giving someone advise on a $800 item

nikexv2 said:
They are not locked, the phone still thinks it has a verizon sim and that's why you cant edit the settings, do a complete factory reset.
And anyways, even with editable apn settings you wont get lte, because your s8 is lacking the european lte bands.
Click to expand...
Click to collapse
I did a factory reset while my Vodafone SIM Card was in the phone. I am now getting the following message:
Sorry, we're having trouble activating your phone.
If you're moving your phone number from your old phone to this one, make sure your old phone is turned off.
In addition, I get the following message on the very next screen:
You can set up your phone using Wi-Fi, but you won't be able to make or receive calls until your phone has been activated on the Verizon network.
Is there anyway to unhinge my phone from the Verizon network!? Before I left the United States, Verizon assured me my phone was not locked to their network; however, it appears to be based on the messages received after factory resetting my phone.

SanDiego31 said:
I did a factory reset while my Vodafone SIM Card was in the phone. I am now getting the following message:
Sorry, we're having trouble activating your phone.
If you're moving your phone number from your old phone to this one, make sure your old phone is turned off.
In addition, I get the following message on the very next screen:
You can set up your phone using Wi-Fi, but you won't be able to make or receive calls until your phone has been activated on the Verizon network.
Is there anyway to unhinge my phone from the Verizon network!? Before I left the United States, Verizon assured me my phone was not locked to their network; however, it appears to be based on the messages received after factory resetting my phone.
Click to expand...
Click to collapse
What you can try is to flash the USA csc instead of the VZW one that you have right now.

Unlocked my sprint v20 mobile newtwork is unavailable???

Unlocked my Sprint LG v20 through a website someone on here recommended for me (lg simunlock) and used the Network Unlock app and it i used the code to unlock it they gave me and it said successful. even now when i open the app it sais my device has been permanently unlocked.
When i put my Family mobile sim in it it gives me the bars as if im getting a signal but when i call someone i sais mobile network is unavailable?
help please??!

k1bih said:
Unlocked my Sprint LG v20 through a website someone on here recommended for me (lg simunlock) and used the Network Unlock app and it i used the code to unlock it they gave me and it said successful. even now when i open the app it sais my device has been permanently unlocked.
When i put my Family mobile sim in it it gives me the bars as if im getting a signal but when i call someone i sais mobile network is unavailable?
help please??!
Click to expand...
Click to collapse
Have you tried doing a profile update in settings system update

loopytee said:
Have you tried doing a profile update in settings system update
Click to expand...
Click to collapse
no i havent yet. ill try and do that now.

loopytee said:
Have you tried doing a profile update in settings system update
Click to expand...
Click to collapse
when i did this it sais authentication error.

just checked apparently the imei is bad but it was good the day i bought it how is that possible?

k1bih said:
just checked apparently the imei is bad but it was good the day i bought it how is that possible?
Click to expand...
Click to collapse
Have you tried contacting the website you used for unlock and asking for support? Perhaps this is a common issue that they know how to resolve easily.

Heres the issue. Sprint is a CDMA network, Family Mobile is Powered by T-Mobile, a GSM network. The odds of a sprint device working with any other carrier that isn't CDMA is next to none. I work at T-Mobile and we run across this issue frequently, sprint devices aren't compatible with our networks because of sprints difference in network hardware.

OfficialVillager said:
Heres the issue. Sprint is a CDMA network, Family Mobile is Powered by T-Mobile, a GSM network. The odds of a sprint device working with any other carrier that isn't CDMA is next to none. I work at T-Mobile and we run across this issue frequently, sprint devices aren't compatible with our networks because of sprints difference in network hardware.
Click to expand...
Click to collapse
Ive unlocked the phone and it has a CDMA or a global GSM option so i doubt thats the issue. However it seems my actualy issue was that the person who sold me the phone only reported it stolen or missing once i bought it from him.

k1bih said:
Ive unlocked the phone and it has a CDMA or a global GSM option so i doubt thats the issue. However it seems my actualy issue was that the person who sold me the phone only reported it stolen or missing once i bought it from him.
Click to expand...
Click to collapse
Take the device to a sprint store and have them run the IMEI, they can tell you. Having it unlocked doesnt mean its GSM if the hardware doesnt support GSM. I have that issue with sprint phones all the time.

OfficialVillager said:
Heres the issue. Sprint is a CDMA network, Family Mobile is Powered by T-Mobile, a GSM network. The odds of a sprint device working with any other carrier that isn't CDMA is next to none. I work at T-Mobile and we run across this issue frequently, sprint devices aren't compatible with our networks because of sprints difference in network hardware.
Click to expand...
Click to collapse
The ls997 is gsm compatible, the only thing it wont do is Voice LTE, this will only work on sprint. Most sprint phones use sim cards now days, so the majority of sprint phone can be unlocked to be used on a gsm carrier.

siulmagic said:
The ls997 is gsm compatible, the only thing it wont do is Voice LTE, this will only work on sprint. Most sprint phones use sim cards now days, so the majority of sprint phone can be unlocked to be used on a gsm carrier.
Click to expand...
Click to collapse
Then you need to manually setup the APN settings for the data.

Spring LG v20 - Unlock does not work. (even Sprint said it is unlocked)
siulmagic said:
The ls997 is gsm compatible, the only thing it wont do is Voice LTE, this will only work on sprint. Most sprint phones use sim cards now days, so the majority of sprint phone can be unlocked to be used on a gsm carrier.
Click to expand...
Click to collapse
Spring LG v20 - Unlock does not work. (even Sprint said it is unlocked).
I am still dealing with Sprint now but i don't think they know what needs to be done.
MY device LG v20 (LS997) did received unlocked code.
I did update PRL, Profile, and UICC unlock button in System update .. and it did all without any error.
However when I insert NON-Sprint SIM CARD, the device can't recognize the SIM CARD.
Also I tried to add APN but the device can't save it. (even I clicked SAVE, the new APN does not show up as an option to select).
I am stuck here so badly now. i have 3 LG v20 and plan to move somewhere but I'd like to use them. arghh.
I fought back with Sprint and got MSL code but.. not sure what I can do with it.
There are so many other people in the sprint community forum who are having the same issue as me).
any help/options are appreciated.
thank you.

amsguy said:
Spring LG v20 - Unlock does not work. (even Sprint said it is unlocked).
I am still dealing with Sprint now but i don't think they know what needs to be done.
MY device LG v20 (LS997) did received unlocked code.
I did update PRL, Profile, and UICC unlock button in System update .. and it did all without any error.
However when I insert NON-Sprint SIM CARD, the device can't recognize the SIM CARD.
Also I tried to add APN but the device can't save it. (even I clicked SAVE, the new APN does not show up as an option to select).
I am stuck here so badly now. i have 3 LG v20 and plan to move somewhere but I'd like to use them. arghh.
I fought back with Sprint and got MSL code but.. not sure what I can do with it.
There are so many other people in the sprint community forum who are having the same issue as me).
any help/options are appreciated.
thank you.
Click to expand...
Click to collapse
Have you tried switching it from factory mode to test ? In the hidde menu, i dont remember were it is, but there is an apk that installs the hidden menu witch will allow you to switch between gsm and cdma mode. And i dont believe you need to sim unlock the v20, i dint have too.