Sorry for this-I am just new to GT/Android.
In using phones as long as you have the correct frequency you can always use your phone anywhere in the world,using the sim card for that particular place. No need to hack or flash the modem.
The Galaxy tab is supposed to be also a phone. Why do I have to flash the modem? Is there no universal type of modem for android?
I assume that there is different firmware at least for the CDMA and GSM versions, and that on top of that there are incremental updates to the modem firmware.
If anyone else has any more/other info I'd also be interested to hear it.
E.g. Is the modem firmware provider dependent too?
The modem is a binary file to operate the radio, and with each rom upgrade, there is a modem tweak too.
The samsung galaxy s line of tabs and phones have a few radios in common, for example the vibrant, i9000, and tab use the same radio chipset.
US t-mobile tabs should:
get 2g+voice using a vibrant modem, and the stock radio for 3g data only, and you have to install the modem switch software by Rotohammer.
North American at&t tabs should:
get voice and 3g data using the JK3 modem from the i9000.
These guidelines assume you use a compatible sim, at&t sim in at&t tab, t-mo or simple mobile sim in t-mo tab.
Related
I've searched for days through XDA forums but I finally gave up searching for answers and decided to start this thread in hopes of getting help.
I have a stock Captivate running Android 2.1
I would like my phone to be running:
1. I900 Galaxy S Rom - European Version
2. a modem file which will enable the US 3G radio that's built into the Captivate.
My understanding is that simply installing a European Rom version will take away the phone's capability to connect to the 850mhz frequency of ATT since the European Galaxy S only supports 900/1900/2100 bands so installing the correct modem file is important.
I don't care which Rom is used but a Froyo Rom would be nice.
Can anybody please tell me what files I need to download (tar, pit, csc, md5, etc.) and how to use them (which exact slots to put the files in using Odin 3).
Any help would be much appreciated.
Thank you so much!
http://forum.xda-developers.com/showthread.php?t=818030
There's a couple other ROMs that are similar in nature.
Hi guys,
I had a question about the JL2 firmware update for Bell i9000M's.
I've updated to seeARM's custom firmware with my galaxy s, because it was mentioned that you need the JL2 firmware in order to access the 850Mhz band for Canada's 3G network.
How is the Bell Galaxy S different than the Rogers Galaxy Captivate? How is it that bell phones have to have the JL2 modem in order to get the 850Mhz, or do I have the wrong impression about this?
Thanks,
Kenrick
Captivate model was made only for canada and at&t thats why all of their modems have the 850Mhz
I9000M need the 850Mhz in order to work in canada but the I9000 its an international phone and there is a lot of modems around for different countries/areas that dont need that band. you can get it to work with a few more modems JK3, JK4 and BVJP5
Thanks! Didn't realize that the Bell model was the only international version. I just thought it was the only one lucky enough to have a physical home button lol.
Btw, do you know if JK3, JK4 and BVJP5 will cause that internal SD card failure? The initial 2.2 release for Froyo (which was JK4 i believe) was the worse in terms of causing the internal SD failure. The supposedly JL2 update didn't mitigate the issue completely, but it didn't make it worse.
JK3, JK4 and BVJP5 are modems the rom you are talking JL2 has the JK4 modem, tbh i dont own the I9000M i got the I9000T but from what ive read some people run differents roms just fine on the M, just do some reading first and remember to use one of the modems with the 850Mhz band
I am about to flash my USA T-mobile SGT to Gingerbread and use the Overcome v2.0.0 BETA 2.
When using Odin3 v1.7 and get to the part where I can put in the phone option, I just don't know which modem.bin I should use.
I currently have the following modem.bin files:
1. JPZ-Modem
2. TMO-Modem (T-mobile)
Out of these 2, which one should I use? ...or should I use another one?
I am aware that USA T-mobile Galaxy tab can either use 2G data/call or 3G data and no phone call.
Which modem should I use to allow phone call on the tab?
Thanks.
To my understanding you select tmobile modem for u.s. Phones
Sent from my galaxy tab...addicted 2 samsung
Earthbrain said:
I am aware that USA T-mobile Galaxy tab can either use 2G data/call or 3G data and no phone call.
Which modem should I use to allow phone call on the tab?
Thanks.
Click to expand...
Click to collapse
The best voice modem for US T-mobile is the Roto-2g modem. It is a T959 vibrant modem, and any vibrant modem will give you 2g (EDGE)+voice.
The roto modem is in the modem switcher thread, where you can enable your US tab to have 3g or 2g+voice.
rangercaptain said:
The best voice modem for US T-mobile is the Roto-2g modem. It is a T959 vibrant modem, and any vibrant modem will give you 2g (EDGE)+voice.
The roto modem is in the modem switcher thread, where you can enable your US tab to have 3g or 2g+voice.
Click to expand...
Click to collapse
i have jk3 and a tmo tab using a blackberry data plan and i cant get the web to work. i flashed roto 2g and can switch but the only site i can go to is tmobile
Google "t-mobile redirect" for the xda-frowned upon instructions. It's a simple process. WARNING: back up and move that copy to your laptop.
Hi, just to put this out there, I have searched, read, searched and read for the past 3 nights, and have not been able to find a solution...
I have a T-Mobile t879, which I unlocked to use on my At&Tplan (sorry, TMobile Service is horrible down here). I can only use edge for my data.
I know that the Phone's hardware should be able to use 3g, as the specs show it to have the same bandwidth capabilities as the i717.
I've tried downloading every AT&T modem on this site, and lost all network capabilities, so I'm back on the stock t879 modem. Is there any app, mod or settings I could use to access faster internet on AT&T's network?
BTW - I am using AOCP JB Rom, but if 100% Necessary, I will revert to the stock ROM. Had the same problem before installing JB rom.
platano622 said:
Hi, just to put this out there, I have searched, read, searched and read for the past 3 nights, and have not been able to find a solution...
I have a T-Mobile t879, which I unlocked to use on my At&Tplan (sorry, TMobile Service is horrible down here). I can only use edge for my data.
I know that the Phone's hardware should be able to use 3g, as the specs show it to have the same bandwidth capabilities as the i717.
I've tried downloading every AT&T modem on this site, and lost all network capabilities, so I'm back on the stock t879 modem. Is there any app, mod or settings I could use to access faster internet on AT&T's network?
BTW - I am using AOCP JB Rom, but if 100% Necessary, I will revert to the stock ROM. Had the same problem before installing JB rom.
Click to expand...
Click to collapse
I have had an opposite problem. I have the I717 which runs on edge when I put my t-mobile sim in. I tried using t-mobile modems(found on the xda i717 development forum) but that never really worked. When the t879 came out, I was happy to finally have a official modem that would work, but it turn out not to work for me. So I am using a i717 with t879 stock rom and a tmo modem on t-mobile which runs on edge and sit in my desk.
Did you try all the at&t modems in the I717 development forums(http://forum.xda-developers.com/forumdisplay.php?f=1496)?
You could also try loading the stock I717 rom which should work since I loaded the stock T879 rom on my I717.
I717 - THE ALL IN OnE STOCK ROMS/Kernels/Modems: http://forum.xda-developers.com/showthread.php?t=1647756
If nothing works, my suggestion is to sell or trade your T879 for an I717.
Once in a while, I still look and play with my I717 hoping it will work on tmobile hspa+
I have a question I'm hoping an expert can answer. I pretty new to the Android world so I'm trying to wrap my head around a few things..
So I bought a (prepaid/locked) S5830T from a store over here, and proceeded to unlock and upgrade to the latest
stock Gingerbread firmware (2.3.6). So now when I boot up, instead of S5830T, I get S5830. All good.
Now the phone runs fine, but I have an issue with 3G data in particular.
The "T" suffix appears to relate to the 'Telstra network' (which the phone was originally locked to).
According to this link - http://whirlpool.net.au/wiki/mobile_phone_frequencies
Telstra operates on 900Hz / 1800hz for 2G and 850hz / 2100hz for 3G.
The carrier I am on (Optus) operates on 900Hz / 1800hz for 2G and 900hz / 2100hz for 3G.
So I've flash the modem file from the Optus firmware package (Modem_S5830_XWKT3) hoping that that would enable
the 3G band that is currently not working.
(What happens ins 2G/"H" works fine, but when the phone switches to "3G" I lose all data connections)
But Alas, I still have the same problem..
So I'm wondering is there hardware in the phone that is preventing connection to the network, or do I need to find a more
appropriate Modem file that operates on the frequencies above?
Many Thanks!
BrikHaus
BrikHaus said:
I have a question I'm hoping an expert can answer. I pretty new to the Android world so I'm trying to wrap my head around a few things..
So I bought a (prepaid/locked) S5830T from a store over here, and proceeded to unlock and upgrade to the latest
stock Gingerbread firmware (2.3.6). So now when I boot up, instead of S5830T, I get S5830. All good.
Now the phone runs fine, but I have an issue with 3G data in particular.
The "T" suffix appears to relate to the 'Telstra network' (which the phone was originally locked to).
According to this link - http://whirlpool.net.au/wiki/mobile_phone_frequencies
Telstra operates on 900Hz / 1800hz for 2G and 850hz / 2100hz for 3G.
The carrier I am on (Optus) operates on 900Hz / 1800hz for 2G and 900hz / 2100hz for 3G.
So I've flash the modem file from the Optus firmware package (Modem_S5830_XWKT3) hoping that that would enable
the 3G band that is currently not working.
(What happens ins 2G/"H" works fine, but when the phone switches to "3G" I lose all data connections)
But Alas, I still have the same problem..
So I'm wondering is there hardware in the phone that is preventing connection to the network, or do I need to find a more
appropriate Modem file that operates on the frequencies above?
Many Thanks!
BrikHaus
Click to expand...
Click to collapse
Can you find the original Telstra firmware, extract the modem from that and flash it?
Can you get hold of a Telstra SIM and see if you still have the same issues?
The T doesn't necessarily signify Telstra but just a slightly different version of the S5830
It's the same with SGS2 there is a GT-i9100 and GT-i9100T (I have the T version purchased in Thailand so nothing to do with Telstra)
Because I have used this phone in Australia also, I've noticed that T modems perform better on my SGS2 than non-T versions.
I've found Optus coverage (in Melbourne) to be pathetic so I always have to ensure I'm using a T modem when I'm there.
ApriliaM3 said:
Can you find the original Telstra firmware, extract the modem from that and flash it?
Can you get hold of a Telstra SIM and see if you still have the same issues?
The T doesn't necessarily signify Telstra but just a slightly different version of the S5830
It's the same with SGS2 there is a GT-i9100 and GT-i9100T (I have the T version purchased in Thailand so nothing to do with Telstra)
Because I have used this phone in Australia also, I've noticed that T modems perform better on my SGS2 than non-T versions.
I've found Optus coverage (in Melbourne) to be pathetic so I always have to ensure I'm using a T modem when I'm there.
Click to expand...
Click to collapse
Hey, Thanks for the reply ApriliaM3.
Yeah I know the T doesn't necessarily mean Telstra, but was pretty sure it meant there was a different modem to stock (as with your SGS2).
Which is why I reverted back to stock. I thought that may have been more accommodating of all frequencies..
That's very interesting what you say regarding your T modem.
I believe I can extract the modem from my base backup, so will give that a try.
As for the Telstra sim, that might be a little harder, but I'll try the modem first and then try to get a sim.
Thanks for the info!
BrikHaus said:
Hey, Thanks for the reply ApriliaM3.
Yeah I know the T doesn't necessarily mean Telstra, but was pretty sure it meant there was a different modem to stock (as with your SGS2).
Which is why I reverted back to stock. I thought that may have been more accommodating of all frequencies..
That's very interesting what you say regarding your T modem.
I believe I can extract the modem from my base backup, so will give that a try.
As for the Telstra sim, that might be a little harder, but I'll try the modem first and then try to get a sim.
Thanks for the info!
Click to expand...
Click to collapse
I get the impression that my requirement for a T modem when I'm in Melbourne has more to do with Optus and their pathetic coverage than it has to do with the modem. When I'm in Thailand, it doesn't seem to matter what modem I use... they all get good signals and I have no problem with data either. I'm also a member on Whirlpool but I rarely go there any more... still it's quite a handy and informative site for many things