MTK6589T radio 900Mhz band why some devices have it and others not? - Hardware Hacking General

Hi all!
Why there's MTK6589T devices with the WCDMA 900Mhz band supported and others not?
I think that the radio is embeeded into the processor and I can't understand why the specs of some mobile phones are different in this aspect.
What are limiting the implementation of the frequency used?
Regards,
SeakOink

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GSM from Tri-band to Quad-band,

Hi, can I change touch dual the GSM from Tri-band to Quad-band,
for the better reception in USA.
I know the touch can do that, Thank
Now that its going to be available in the US with quad band, does it mean tri band niki can be changed to quad band?
shupacanucks said:
Now that its going to be available in the US with quad band, does it mean tri band niki can be changed to quad band?
Click to expand...
Click to collapse
I would like to know this too
It could be possible, but the RF chipset could be totally different on the two models.
There wouldn't be much of a reason for HTC to restrict the current tri band duals with the way the various operators have deals with other overseas operators.
clonmult said:
It could be possible, but the RF chipset could be totally different on the two models.
There wouldn't be much of a reason for HTC to restrict the current tri band duals with the way the various operators have deals with other overseas operators.
Click to expand...
Click to collapse
You would think they would have designed, developed the radio chip long ago, and the new edition would only contain software changes to the OS, and Hardware soft updates
--bump--
I too would like to know if this is possible. The best buy website has a touch dual listed with 850. I called their customer support and they couldn't give me any information on release date or even a model number. Will the US version of the dual have 850? I want to know if I can get this $500 phone to work here (area code 318 with ATT) on just the 1900 band or do I need the 850 band for better reception. Any advice would be helpful. Thanks in advance.
b
Any luck? I would like to upgrade to the quad band
theres only one version of the dual that is quad band and that is the US version being sold by BEST BUY.
Thanks for the reply I figured I was out of luck, so I ordered the us version yesterday.
Bought the triband Dual but, soon figured out that it doesnt work well in the states.
I thought I would give it a go.
Thanks
Was working on 850MHZ than....
My HTC touch was working on 850 MHZ than I had a tech at my provider's, setting up my internet.
Since that moment it does not work anymore:
Getting the signal but not able to make calls or receive calls.
The guy tried to fix it. It worked for a couple of calls and than stopped working.
Back to the tech, he told me it s because of the 850mhz on which they operate.
He said that even if it was working fine, it wasn't meant for their network (850 MHZ).
Should I believe him?
(the phone works fine with 1900MHZ band from another company)
How can I fix this?
wish there was a radio upgrade like the latest for the diamond that enabled the 850 band

[Q] does u8800 support gsm 1900mhz band?

I found lower specification on huawei's official website:
UMTS 900/2100MHz; HSUPA 5.76Mbps, HSDPA 7.2Mbps; GSM/GPRS/EDGE 850/900/1800 MHz
but xda's db shows u8800 is a quad band phone?
which one is right?
policeman0077 said:
I found lower specification on huawei's official website:
UMTS 900/2100MHz; HSUPA 5.76Mbps, HSDPA 7.2Mbps; GSM/GPRS/EDGE 850/900/1800 MHz
but xda's db shows u8800 is a quad band phone?
which one is right?
Click to expand...
Click to collapse
GSM Arena says quad band GSM as well:
http://www.gsmarena.com/huawei_u8800_ideos_x5-3596.php
Maybe someone with an operator on 1900Mhz can confirm that... Huawei are full of **** in terms of specifications (like the FM Radio, which on their specification is available, but in reality is gone...)
Thanks a lot for your information.
wait someone use this on a 1900Mhz operator to support this
anyone use this phone in United Stated or Canada? I heard that US and Canada use 850/1900Mhz band?
I wrote a letter to huawei and engineer there told me:
尊敬的用户:
您好!感谢您使用华为产品!
国内销售的产品只能保证在国内能够正常使用,在海外使用,我们无法确保能正常使用。
如有疑问,您可以直接致电华为公司服务热线400-830-8300、800-830-8300(服务时间:8:00-20:00)进行咨询。
我司U8800的工作频段:
WCDMA 900 MHz:880MHz~915MHz/925MHz~ 960MHz(Uplink/Downlink)
WCDMA 2100 MHz:1920MHz~1980MHz/2110MHz~ 2170MHz(Uplink/Downlink)
GSM/GPRS 850MHz:824MHz~849MHz/869MHz~894 MHz(Uplink /Downlink)
GSM/GPRS 900MHz:880MHz~915MHz/925MHz~960 MHz(Uplink /Downlink)
GSM/GPRS 1800MHz:1710MHz~1785MHz/1805MHz~ 1880MHz Uplink/Downlink)
GSM/GPRS 1900MHz:1850MHz~1910MHz/1930MHz~ 1990MHz(Uplink/Downlink)
华为公司服务热线400-830-8300、800-830-8300,服务时间:8:00-20:00。
感谢您的支持!          
           
华为终端技术支持客户服务中心
so the u8800 seems support gsm 1900mhz but they miss to write it on the official site. XD

[Q] Using LTE Note 3 in Oman / Middle East

Hi guys.
Sorry if it sounds like a noobish question, but I had to ask it before I pre-order the S800 variant of the Note 3. My main reason for doing so being the developer support, looking at how the EXYNOS devices are a bit of a mess in this aspect. I mostly use WifFi.
I just wanted to ask that will I be able to use the S800 variant without any issues in a country (Oman) that's still not very big in terms of LTE. I mean, in terms of getting normal mobile services. Like mentioned above, not really bothered about LTE per se, just that I'd like to have the S800 version for the developer and community support.
Thanks!
lak47 said:
Hi guys.
Sorry if it sounds like a noobish question, but I had to ask it before I pre-order the S800 variant of the Note 3. My main reason for doing so being the developer support, looking at how the EXYNOS devices are a bit of a mess in this aspect. I mostly use WifFi.
I just wanted to ask that will I be able to use the S800 variant without any issues in a country (Oman) that's still not very big in terms of LTE. I mean, in terms of getting normal mobile services. Like mentioned above, not really bothered about LTE per se, just that I'd like to have the S800 version for the developer and community support.
Thanks!
Click to expand...
Click to collapse
well, looking at the different frequency bands used in your country from wikipedia:
http://en.wikipedia.org/wiki/List_of_mobile_network_operators_of_the_Middle_East_and_Africa#Oman
I found out that Oman uses the 2100MHZ band for UMTS, and looking at the used frequencies in LTE from this wikipedia article:
http://en.wikipedia.org/wiki/List_of_LTE_networks#Middle_East
I found out that your country uses either the 1800Mhz or the 2300Mhz bands depending on the network.
Given what you need, I would go with the international 4G version N9005 if you wanted LTE support or the international 3G version N9000.
From negrielectronics.com, the N9005 supports the following bands:
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100
4G Network LTE 800 / 900 / 1800 / 2100 / 2600
Click to expand...
Click to collapse
As you can clearly see, the 2100Mhz band needed for 3G is supported by the international version, however, only the 1800Mhz is supported for LTE, so you might have LTE or not depending on what network you are on.
As for the N9000:
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100
Click to expand...
Click to collapse
Also, you can clearly see that the needed band for 3G, the 2100Mhz band, is supported, so you will have 3G in your country.
BOTH of these mentioned variants are SD800 variants, and they will both work for 3G in your country, you can check them out at:
negrielectronics.com
Hope this helps
sharl1987 said:
Hope this helps
Click to expand...
Click to collapse
Thank you sharl1987! That's good information.
So basically I should not have an issue using this device.
Just for good measure, this is the device:
http://www.clove.co.uk/samsung-galaxy-note-3
lak47 said:
Thank you sharl1987! That's good information.
So basically I should not have an issue using this device.
Just for good measure, this is the device:
http://www.clove.co.uk/samsung-galaxy-note-3
Click to expand...
Click to collapse
Yes, I do not foresee any problems with the device you are planning to purchase, it supports the 2100 Mhz band needed for your country. However, just to be in the safe side, I would call your mobile carrier and verify that they indeed are using the 2100Mhz band for 3G, I can guarantee my findings, I cannot vouch for the information I found on wikipedia.
sharl1987 said:
Yes, I do not foresee any problems with the device you are planning to purchase, it supports the 2100 Mhz band needed for your country. However, just to be in the safe side, I would call your mobile carrier and verify that they indeed are using the 2100Mhz band for 3G, I can guarantee my findings, I cannot vouch for the information I found on wikipedia.
Click to expand...
Click to collapse
Actually it most probably won't work given that all EU versions will only work on European sim cards on the GN3 for some reason. I would recommend getting it from Omasco just to be sure.
Crimso said:
Actually it most probably won't work given that all EU versions will only work on European sim cards on the GN3 for some reason. I would recommend getting it from Omasco just to be sure.
Click to expand...
Click to collapse
well my reply was before the damn announced region locked move. I am so pissed of about it. BYE BYE SAMSUNG

A way to enable more LTE bands to ZenFone 2 Laser (ZE500KL)

Hello to all,
I have a ZenFone 2 Laser (ZE500KL). Asus support said me that is a Taiwanese version.
The issue is that is not working with LTE network in my country, only with 2G and 3G. Here is used AWS1 that is the same AWS band 4 (1700/2100 MHz) 1700 for uplink and 2100 for downlink. Asus support said me that I have nothing to do since is a hardware issue because the antenna doesn't work in 1700/2100.
Is there a way to know if this handset could be enabled to work with LTE AWS Band 4?
Thanks in advance for any help.
Regards
First thing first, I'm sorry if my reply did not help you, and this is based on my limited understanding...
Simple answers would be nothing, nothing you can do if this is "hardware" limitation as asus told you.
Now the explanation, note that I'm not knowledgeable about this thing, so I don't think could give a meaningful explanation.
From what I've read, LTE, on different country use different band (1700, 2100, etc). And by that, just say *not the real reason, just play along with it*, "device built by limiting hw capabilities to certain band, to work on region A, because that device didn't meant to work/used outside region A" . This might the reason, you could see asus with WW or TW variant. They limit the device hardware to work only with certain band range.
This is hardware, not software/firmware (if you compare it to like some "unlocked provider device") . So you can't do anything about it.
This is like, using CDMA phone with GSM card, they work at different band. AFAIK it didn't work, cmiiw.
Oh, IIRC, old phone (before Android born) mostly have triband (GSM) you might won't be able to use your device outside your country. Then, newer phone, till now, use quad band to support usability around the globe. cmiiw
I hope you get what I'm trying to say there~
I don't know what it mean about LTE aws 1 / aws 4, I don't think this is just band length (1700/2100).
# sorry for my bad english
Sent from my ASUS_Z00RD using XDA Labs

Ownice C500 cellular LTE

Since owners of this unit struggle with the non supported LTE bands in the USA, has anyone contacted the modem chip manufacturer “Winlink?” Ask them to provide us with a patch to enable all the bands we need to make our units work correctly in the states?
The only band from T-mobile USA that works is the 1900, very limited 3G coverage but it’s mostly 2G.
Forget all the hacking and reprogramming, don’t you think the chip maker can enable it? Or is this Android related problem?
What are the specs can of the broadband modem from winlink? Are more bands supported in the radio hardware?

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