So I just bought an imported SGS2 - I noticed it had a GSM/WCDMA switch.
I'm gonna make a compete fool of myself, but isn't WCDMA what Spring and VZW uses? Does it mean SGS2 is dual-band?
Sprint & Verizon user CDMA, not WCDMA.
Isn't WCDMA an upgraded version of CDMA? A different frequency or something.
WCDMA and CDMA are two different thing, i can only explain that much with my knowledge...
Related
check the screen shots. I'm not sure but when i choose wcdma and 850/1900 band it says tmobile3g. maybe it is labeling it wrong? although i also ran some tests vs my iPhone 3gs and the speeds are similar, with the hd2 leading. i am in the baltimore/dc area. please confirm or disprove.
my next step is to get my brother to have tmo unlock the hd2
thanx.
Trust on this it is not ATT band 3g you're getting, WCDMA is the AWS band that Tmo gets in the 1700/1900 range but it's not the same as ATT.
That settings page has been around since the age of Tilt (Kaiser). They have basically been using the same settings page all this time where they list all of the possible band settings. But if you don't have the necessary hardware, you won't be able to receive/send signal on those frequencies.
chrisrj28 said:
Trust on this it is not ATT band 3g you're getting, WCDMA is the AWS band that Tmo gets in the 1700/1900 range but it's not the same as ATT.
Click to expand...
Click to collapse
1700/2100, not 1700/1900 if it had a 1900 band I think ATT could get it.
I'm just curious if there's anyone out there with an HD2 on Verizon? If not, is it possible to do it? The HD2 is a quad band device, so doesn't it have the hardware capable to be on a CDMA network? I was thinking that if I bought an unlocked HD2, I would be able to put it on my account with Verizon. I guess I would have to be running a different radio in order to do that though.
Anyone have any thoughts, comments, suggestions? I really want one of these phones, but I can't switch from Verizon because no other provider gives me 3g in my area. Plus, my Touch Pro 2 is getting dated compared to that 1gz Snapdragon!
HD2 is a GSM phone. Pretty sure it can't be made to work on a CDMA network.
Technology
GSM: 850/900/1800/1900 MHz
WCDMA/HSPA: 1700 MHz (AWS) / 2100 MHz
Taken from the HD2 tech specs on HTC's website.
If it has a CDMA radio, why couldn't it work if it were unlocked?
Does Verizon have a sim card to put in the phone? If not, how can they make it work on their network.
Verizon does have sim cards, they use them in the Blackberry Storm, which is both GSM/CDMA ...
But It may be like the storm if it is activated via the IMEI that it may not require a sim card ...
rly? i never thought verizon would use sim cards...can we bring non verizon phones them from lets say ATT to their network?
Verizon has SIM cards for their GSM/CDMA world phones. Sprint also has world edition blackberries with a SIM card. The SIM card is there so the phone is able to roam onto a GSM network outside of the USA. As far as I know this SIM card will not allow it to roam onto a USA GSM network, since there are no roaming agreements in place between VZ and ATT/TMO
The WCDMA on the HD2 is not the same as CDMA that VZ/Sprint use.
WCDMA is the 3G standard that GSM providers use. CDMA is well as far as i know the same old CDMA network that VZ/Sprint have used for ages with whatever "bolt on" enables 3G on their network. I dont follow the CDMA standard so i dont know all the specifics about the tech.
Edit:
I just did a small amount of wikipedia research. What Verizon/Sprint use is CDMA2000/EV-DO
http://en.wikipedia.org/wiki/CDMA2000
http://en.wikipedia.org/wiki/Evolution-Data_Optimized
This is not compatible with WCDMA,
Even though they both use "CDMA" family of technology http://en.wikipedia.org/wiki/Code_division_multiple_access
WCDMA is a wideband version http://en.wikipedia.org/wiki/WCDMA
Thanks for the replies guys. This is a bummer though. I was really hoping to be able to get an HD2 to use with Verizon. Oh well, guess I'll wait for the Droid X to release, even though I'd like to stick with WiMo.
Hi Guys, dose anyone have any idea if the samsung Epic 4G for sprint supports GSM networks??
as I know it's 4G phone for sprint, works on Wimax networks, and I heard that it's GSM capable as well, is that true?
Thx
I hope that's true... but I think It hasn't a sim slot
Isn't sprint a cdma Telco? Otherwise you'll be hearing ppl like me buying the epic and using it I'm aus. I would love a gsm sgs with kb
Sent from my Apple Newton 2100
I'm pretty sure it's not. Sprint are CDMA (and their "4G" is WiMax). Their phones do not normally have any GSM capabilities.
Epic 4G General Forum
No, it does not have GSM. It's CDMA only and specifically (at least currently) U.S. only.
ConceptVBS said:
No, it does not have GSM. It's CDMA only and specifically (at least currently) U.S. only.
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Click to collapse
Actually, the Epic 4G is CDMA/WCDMA capable. WCDMA being a hybrid of different GSM technologies. If you go into the Phone Info Test Mode (*#4636*1111#) > Phone Information, you can see how to change how the phone's radio interacts with different cell towers in the area. While in the US, there's no point in having WCDMA on because there are no WCDMA service providers here. However, when you go overseas... well, you get the picture.
The only reason this phone really isn't strictly GSM capable is because the radio isn't compatible, and there's no room for a SIM card to contain GSM network subscriber data.
"W-CDMA (Wideband Code Division Multiple Access), UMTS-FDD, UTRA-FDD, or IMT-2000 CDMA Direct Spread is an air interface standard found in 3G mobile telecommunications networks. It is the basis of Japan's NTT DoCoMo's FOMA service and the most-commonly used member of the UMTS family and sometimes used as a synonym for UMTS.[1] It utilizes the DS-CDMA channel access method and the FDD duplexing method to achieve higher speeds and support more users compared to most time division multiple access (TDMA) schemes used today.
While not an evolutionary upgrade on the airside, it uses the same core network as the 2G GSM networks deployed worldwide, allowing dual-mode operation along with GSM/EDGE; a feat it shares with other members of the UMTS family."
--http://en.wikipedia.org/wiki/W-CDMA_(UMTS)
Hi,
Forgive me if this has been asked before but i did search and couldn't find anything that i was looking for..
so, I'm planning on buying a verizon LTE tab (4g + wifi) and i was wondering would it be possible to use it on a 3g network? The verizon rep i talked to said that yes this was possible but i'm not sure they knew what they were talking about.
Also, does it need to be unlocked to run on another network or does it come carrier unlocked? if yes, is that currently possible? because i asked verizon and they flat out said no..
Thanks and apologies again if i missed any threads related to these issues.
nevermind, got all the answers i needed
while LTE is backwards compatible with GSM, verizon uses the 700 frequency band which unfortunately is not what i was looking for
Typically 3G and GSM use different radio hardware, or even a different chipset. So a GSM LTE phone/tablet will have specific radio hardware for 2G GSM, 3G GSM and LTE. Verizon's LTE phones and tablet will only have CDMA for 3G and LTE. So, even if Verizon uses GSM frequency for LTE, it will still not operate on GSM networks, only LTE networks.
Is there a way instead of enabling lte/gsm/cdma (auto Prl) in phone info to have wcdma as well? Reason is cause at home o get full bars on WCDMA on rogers but only 2 bars with the lte hack
Have a feeling you guys are gonna say go wcdma & 3g or use lte and suffer battery consequences due to low signal haha
Sent from Nexus 4
Doubt it, it's probably a chip limitation for power constraints. Just like how dual band/radio phones can't do both at the sametime (Verizon CDMA and GSM - not talking CDMA/LTE together).