Hi everybody.
I purchased a unlocked gsm optimus t (t-mobile) in USA last week. Well, in my country we have a 850/1900 wcdma band (it seems the same at USA), but, i can´t conect to 3G network.
Searching for the phone specs, i find it the optimus t work in 1700/2100 network, it´s that correct??. If the answer is yes, it is possible to change wcdma frequency in this phone??.
Thanks for you help.
Pd: I read if i install a correct firmware for my country (Chile) is possible to change it.
I don't think so. There are 2 versions of the phone. I've bought mine in Chile, and no matter what ROM I use, I still can connect to the 3G network.
However, I think you should keep your phone and wait for Nextel or VTR networks to become operational, which will work on those bands.
You should see those 3G networks doing a network search on your mobile.
More info: http://www.mobileworldlive.com/maps/network.php?cid=2047&cname=Chile
Howzit guys,
I brought a HTC Aria in the USA on AT&T network. I came back to SA and rooted my phone put Android v2.2 on (phone came with v2.1) thinking that would unlock the phone, but it didn't. I ended up looking on the net for a website that I could get an unlock code for my phone. Long story short, I found one, paid for it and it worked. I'm using the phone on Vodacom no matter what I do I can't get 3G or HSDPA to work, only GPRS. HSDPA and 3G work fine in the states.
After doing some research I noticed that in the Mobile Network settings on the phone there is 3 options under Network Mode:
1. WCDMA only
2. GSM only
3.GSM / WCDMA auto
Now from what I've seen I need to use WCDMA to get the 3G / HSDPA to work, but when I select option 1. I don't get any signal and then phone eventually switches to GSM automatically. I was at work on the weekend helping a customer with her laptop and she had a 8•ta 3G modem, and 8•ta 3G modems are currently running off of MTN's network I was told this by an 8•ta technician and I noticed when connecting the modem it said something regarding WCDMA.
So now my question, if I change to MTN do you think I will be able to use 3G / HSDPA on my phone?
Any info regarding this will be greatly appreciated.
Thanks
The American version of the Aria uses different 3G frequencies (because that's what AT&T uses), so unfortunately your phone will not work with 3G in South Africa. There is a different version of the Aria (called Gratia in most regions) that is the exact same phone except it supports the correct 3G frequencies for your country, but there's nothing you can do with the phone you have now to make it work.
Hello All,
I am on tmobile and had samsung galaxy s before i got SGS2 from at&t (my wife upgraded). i unlocked/rooted the phone after reading through the posts and it worked like a charm!
My concern right now is that I am always on edge data network with tmobile. can anyone help me on this. Tethering is also not much of use when i am on the slowest connection. Please help.
Can't do much about it since AT&T version doesn't support the 3g/4g band for T-mobile.
At&t gs2 doesn't support t-mobile frequency for 3 g.
Sent from my SAMSUNG-SGH-I777 using xda premium
I thought this phone has all the bands to support all networks.
parags1982 said:
I thought this phone has all the bands to support all networks.
Click to expand...
Click to collapse
No only AT&T.
My guess is that international version supports all the bands not the carrier branded sgII
^Even international version doesn't support T-Mobile 3g/4g (HSPA+) network.. Not many phones support their network. Or maybe it will.. but not everywhere
AT&T SGSII
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 1900 / 2100
T-Mobile SGSII
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 1700 / 2100
International SGSII
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100
I am following another post that lets says HOW TO: "Enable 850Mhz 3G Network Frequency on your Samsung i9000 Galaxy S''. will update how it goes... fingers crossed..
parags1982 said:
I am following another post that lets says HOW TO: "Enable 850Mhz 3G Network Frequency on your Samsung i9000 Galaxy S''. will update how it goes... fingers crossed..
Click to expand...
Click to collapse
No luck. i read somewhere that i may need to install another modem?
Is there anyone out there with the same issue as mine?
any experts out there?
parags1982 said:
I thought this phone has all the bands to support all networks.
Click to expand...
Click to collapse
The AWS (1700) bands are supported only by a handful of carriers. It doesn't exist at all in Europe and Asia. There's little reason for manufacturers to include it on their global phones as so few people use it. It's the reason the T-Mobile SGS2 has a Qualcomm chip instead of Exynos like the rest of them. After the merger, it won't even exist in the U.S. any longer as AT&T plans on using it (1700) for LTE. If you want versatility and the ability to use unlocked phones, change to AT&T.
parags1982 said:
I am following another post that lets says HOW TO: "Enable 850Mhz 3G Network Frequency on your Samsung i9000 Galaxy S''. will update how it goes... fingers crossed..
Click to expand...
Click to collapse
In order to get T-mo 3G, a phone must support HSPA on 1700MHz AWS band, not 850MHz. As such, only phones from T-Mo or some Candadian carrier support 1700 band. Rest of the world use 900/2100 for 3G and AT&T uses 850/1900 for 3G/4G.
You are never going to get 3G on T-Mo on any phones from AT&T. Period. Give it up.
foxbat121 said:
In order to get T-mo 3G, a phone must support HSPA on 1700MHz AWS band, not 850MHz. As such, only phones from T-Mo or some Candadian carrier support 1700 band. Rest of the world use 900/2100 for 3G and AT&T uses 850/1900 for 3G/4G.
You are never going to get 3G on T-Mo on any phones from AT&T. Period. Give it up.
Click to expand...
Click to collapse
thanks. i give up
TMobile uses 1700 up, 2100 down. If the handset doesn't support 1700, you are out of luck.
Correct. Many phones support the 2100 MHz International band.
T-Mobile's network is weird though, and uses both 1700 and 2100 MHz at the same time.
My guess is that UMTS1700 support and not 42 Mbps HSPA+ is why the T-Mobile variant of the GS2 is such an oddball phone.
NO AT&T phone and only a small handful of international phones support T-Mobile's 1700 MHz band.
Similarly, only one or two T-Mobile phones (The Vibrant being one of them) support any of AT&T's 3G bands, but none support all of AT&T's 3G bands to my knowledge.
The interesting thing about this entire thing is that if you go into the modem band selection it lists 5 different wcdma bands including the aws 1700. I enabled those bands and tried using a tmo sim but alas it still only worked on edge. It may have just been there cosmetically rather then actually supporting aws bands. use dialer code *#2263# to access the band selection menu. Maybe there is a way to get it to work.
pb1866 said:
The interesting thing about this entire thing is that if you go into the modem band selection it lists 5 different wcdma bands including the aws 1700. I enabled those bands and tried using a tmo sim but alas it still only worked on edge. It may have just been there cosmetically rather then actually supporting aws bands. use dialer code *#2263# to access the band selection menu. Maybe there is a way to get it to work.
Click to expand...
Click to collapse
I agree with you and have tried exactly what you did (along with other bands) but still not working.
pb1866 said:
The interesting thing about this entire thing is that if you go into the modem band selection it lists 5 different wcdma bands including the aws 1700. I enabled those bands and tried using a tmo sim but alas it still only worked on edge. It may have just been there cosmetically rather then actually supporting aws bands. use dialer code *#2263# to access the band selection menu. Maybe there is a way to get it to work.
Click to expand...
Click to collapse
Typically, the s/w supports multiple versions of h/w. Just because an option's in the menu doesn't mean the h/w's available to support it. The same thing happened with the T-Mobile G2X. It was supposed to be quad-band, the option was in the ROM, but the radio wasn't there to support all the bands.
I have looked for days now across multiple forums to get some insight on this issue:
I want to use my Thunderbolt in Thailand. Haven't found any threads that speak of success, only conjecture that it won't work.
Homework I've done (unless i understand it incorrectly):
- Verizon 3G operates on the 850 / 1900 mhz cdma band. Radio Frequency Summary
" The following is a list of known frequencies which Verizon employs in the United States:
Frequencies used on the Verizon Network
Frequency Protocol Class
850 MHz 1xRTT/EV-DO/eHRPD 3G
1900 MHz 1xRTT/EV-DO/eHRPD 3G
700 MHz LTE 4G
1700/2100 MHz(AWS) LTE 4G"
- Truemove, a popular mobile company in Thailand has early links to Verizon and their 3G service operates on the 850mhz wcdma band
"What should I do if I want to use TrueMove 3G service but I don’t have a 3G 850 MHz mobile phone?
Basically, it’s not that all mobile phones work on any band. Each 3G compatible mobile phone supports different bands. For example, if you have a 3G 2.1 GHz or 900 MHz or 2G mobile phone, you will not be able to use TrueMove 3G service because TrueMove offers 3G service on 850 MHz band.
If you want to enjoy TrueMove 3G service, it is recommended that you buy a 3G WCDMA 850 MHz mobile phone or visit any True Shops and ask for a 3G compatible mobile phone. True Shops also sell different smartphones that support different mobile platforms e.g. iPhone 3G/3GS, BlackBerry Bold 900/Bold 9700 and Motorola Milestone."
- I spoke with verizon after reading other forums about 'unlocking' thunderbolts and was told that the thunderbolt comes unlocked, so unlocking wouldn't be necessary anyway.
- Lastly, it seems that many people have successfully put a 3G SIM into a 4G SIM slot on there phone and received 3G service.
....So what am I missing? What would prevent me from being able to use my Thunderbolt in Thailand for simple 3G service if the carrier (Truemove) works on cdma based bands? What extra might I have to do to get it to work?
PS: Sorry I can't insert the links directly in the post. Not allowed since this is my first post.
Thanks for any help
Hi there,
I've got a Verizon HTC One Max. I rooted and put CM12 on my device, and it seems that some of the network bands aren't compatible with this device. After doing a bit of research, I noticed that the LTE Bands supported by this device are the ones used on my Canadian cellular carrier; However, when I select those types of networks to be used on the device, I get no signal picked up. I'm currently using "WCDMA only" as my selected network band for the device, as none of the GSM, LTE, or CDMA options work. It seems that it only picks up the 3G and 4G bands, but no LTE or GSM.
Now I don't know if this is because of the type of device I purchased (like I said, I found a way to get service to the phone through WCDMA), but I was hoping that maybe I could utilize the LTE network in the area instead of using the awful 3G and 4G speeds.
I'm on Virgin Mobile's network, which is a partner network of Bell Mobility Canada. Their supported network bands are:
"Although both are different and independent from one another, both the CDMA and HSPA+ networks use the 850 and 1900 MHz frequencies. Bell's LTE network uses Band 4 Advanced Wireless Services (AWS 1700/2100 MHz) in most coverage areas and Band 7 (2600 MHz) in a few areas."
The Verizon HTC One Max is compatible with the following:
Verizon: 850/900/1900/2100 MHz with HSPA+ up to 14.4 Mbps and LTE: 700 MHz
So looking at this, I might be an idiot - it looks like on second observation, maybe they're not compatible. I figured I'd post this just to double check anyway for good measure. Anyway, if you've got anything to provide, that'd be great.
Thanks.