Is there a way to make a rooted Captivate connect to the T-Mobile 3G radio frequencies? I'm comfortable using various ROMs and hacks....
I could be wrong but I think the 3g frequencies are different so it wont work.if there is a way I'd like to know also.
Sent from my SAMSUNG-SGH-I897 using XDA App
I thought this was already discussed when the unlock codes were found. The Captivate should work on Tmob 3G but the Vibrant cant on Att 3G. I don't believe you need to do anything to make the frequencies any different.
Tried my friend's sim from TMO in my captivate and it only does edge. His sim back in his G1 gets 3G so it is not the area. I believe the Vibrant works on ATT 3G but the Captivate doesn't work on TMO 3G.
flashman2002 said:
I thought this was already discussed when the unlock codes were found. The Captivate should work on Tmob 3G but the Vibrant cant on Att 3G. I don't believe you need to do anything to make the frequencies any different.
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you have it mixed up: vibrant can work on one of at&t's 3g bands, but captivate will not work on any t-mobile 3g bands.
Yes that is correct, I do have these mixed up. I meant to say vibrant would work on att and captivate would not work on tmob. Sorry for my error.
Sweet life
I'm on my captivate w t-mobile w no luck on 3g. Too bad because I prefer the design of the captivate over the vibrant. I'll try to make due w 2g & WiFi.
That's too bad... However I just ordered a Vibrant, and I can sell my captivate for what I bought it for. So far loving the Galaxy S line!
So I'm certain you all have heard about the AT&T, Tmobile merger that's coming along. Assuming that it gets approved, I'll suddenly have 3g and 4g available in my area (finally!) since Tmobile is the only one that currently supports it in our area.
My question is - will the Captivate function on the T-mobile tower spectrum for 3g and 4g data?
Please research as the answer is no. The captivate does not have any bands that work on T-Mobile. The virbrant does have bands that work on att.
Sent from my SGH-I897 using XDA Premium App
flashman2002 said:
Please research as the answer is no. The captivate does not have any bands that work on T-Mobile. The virbrant does have bands that work on att.
Sent from my SGH-I897 using XDA Premium App
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How unfair! My boyfriend has the vibrant, and one of his coworkers has the new Galaxy 4g. Well, I hope they somehow tweak it so that the towers broadcast on the AT&T bands as well, else that will really stink, and provides no benefit for AT&T customers.
I saw something on Gizmodo saying that 3G phones with T-Mobile bands will no longer work on the new combined network after integration is complete. That leaves only AT&T 3G devices and whatever 4G LTE devices are around by then. So it sounds like towers will be broadcasting only AT&T frequencies.
My apologies if this information is inaccurate in any way.
Perception 10.2 | SpeedMod K13D | I9000ZSJPG
Ikonomi said:
I saw something on Gizmodo saying that 3G phones with T-Mobile bands will no longer work on the new combined network after integration is complete. That leaves only AT&T 3G devices and whatever 4G LTE devices are around by then. So it sounds like towers will be broadcasting only AT&T frequencies.
My apologies if this information is inaccurate in any way.
Perception 10.2 | SpeedMod K13D | I9000ZSJPG
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Awesome for me! Sucks for my boyfriend! (though his vibrant can use AT&T frequencies if jailbroken, which he has not yet done)
jamina1 said:
How unfair! My boyfriend has the vibrant, and one of his coworkers has the new Galaxy 4g. Well, I hope they somehow tweak it so that the towers broadcast on the AT&T bands as well, else that will really stink, and provides no benefit for AT&T customers.
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I should restate what I said. The phone will work. It just won't have 3G speeds if you are using data. The Vibrant however still works on AT&T 3G towers. I don't know how or if they will actually disable bands as mentioned in a previous posters link to Gizmodo. Sorry for not being more clear in my original post.
flashman2002 said:
I should restate what I said. The phone will work. It just won't have 3G speeds if you are using data. The Vibrant however still works on AT&T 3G towers. I don't know how or if they will actually disable bands as mentioned in a previous posters link to Gizmodo. Sorry for not being more clear in my original post.
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I guess we'll just have to see - it makes sense that AT&T would convert the towers, just as they are currently they won't work. So either way in my case and my boyfriend's case we'll have to wait till our area is integrated and see what happens.
What about this?
http://www.howardforums.com/showthr...850mhz-and-1900mhz-bands-too.-Works-on-ATT-3g
This thread is from last year before we really had a lot of mods to our phones. So maybe more information has been discovered?
Now we are flashing international ROMs and such and swapping modems as we like.
It seems odd that the Vibrant would be able to work on the ATT 3G frequencies but the Captivate would have been manufactured differently. And the I9000? One would think it would be capable of all the bands?
I do have both ATT and TMO sim cards with data on both plans. However, I only get Edge in my Captivate with the TMO sim inserted.
Wow. This hasn't been hashed out 100 times.
Cappy has different radio HARDWARE. Vibrant will get certain Att 3G band but the chances of you having correct band is slim since its older and slower 3G.
Sent via my Continuum 5 Cappy.
I have an AT&T Samsung Captivate and I'm using it with Tmobile with root and sim unlock. I know that the signal will always be on edge and whatnot but is there a radio file or anything I can use to give me better signal because I either have no signal or 2 bars on it. help?
not sure how well any of these will end up working as you know you will only get 2g...but the modem sticky at the top of the dev sectoin is what you're looking for.
http://forum.xda-developers.com/showthread.php?t=876391
Thanks, ill look in to it.
Ima have to flash into gingerbread since im in eclair
Sent from my SAMSUNG-SGH-I897 using XDA App
Froyo would do it...
i know 3g isnt supported because of no 1700 band but dont both tmobile and att use 2100 for hspa (4g)? shouldnt we be able to use that?
Edit: I unlocked and tried a friends sim card and could only get edge, I don't know if maybe there's a setting to change to get hspa working (I know stock captivate didn't even support hspa) but I didn't try for very long.
Has anyone else managed to get hspa working?
Hey guys! I am using Fasty KK4 edition and I really really want HSPA+. I know for a fact that Fasty KJ3 is HSPA+ enabled and wanted to know if I could just flash the I897UCKJ3 modem while running KK4. If not, how do I enable HSPA+? Thanks in advance!
You sure can. Go to the modem thread and flash any of the modems that are labeled US att. they are all hsdpa not hsupa but some will give you better speed than others. Just gotta teeth them.
Sent from my GT-I9000 using xda premium
IpwnHLmath said:
Hey guys! I am using Fasty KK4 edition and I really really want HSPA+. I know for a fact that Fasty KJ3 is HSPA+ enabled and wanted to know if I could just flash the I897UCKJ3 modem while running KK4. If not, how do I enable HSPA+? Thanks in advance!
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Click to collapse
I don't think just flashing the modem will do it, you'd need to install Fasty's(or any other i9000 based ROM) in order to use the HSPA+(AT&T calls 4G). Which, the only change is the increased upload speeds(HSUPA)
I could be wrong about this though, but this is the impression I'm under
kangi26 said:
I don't think just flashing the modem will do it, you'd need to install Fasty's(or any other i9000 based ROM) in order to use the HSPA+(AT&T calls 4G). Which, the only change is the increased upload speeds(HSUPA)
I could be wrong about this though, but this is the impression I'm under
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Click to collapse
Small correction. HSPA (H in notification) Is the best speed sgs can achieve, HSDPA and HSUPA in I9000 roms. HDPA+ is something else. Faster than HSPA slower than LTE. Our phones can't achieve HSPA+
Sent from my ICS powered i897
IpwnHLmath said:
Hey guys! I am using Fasty KK4 edition and I really really want HSPA+. I know for a fact that Fasty KJ3 is HSPA+ enabled and wanted to know if I could just flash the I897UCKJ3 modem while running KK4. If not, how do I enable HSPA+? Thanks in advance!
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Click to collapse
Yeah, some of the leaks had an H+ logo, but they never actually achieved. HSPA, which HSDPA and HSUPA is only achievable on i9000 modems. HSPA+ is unattainable by our phones, as it requires different hardware.
Awesome! Makes sense. So SGS gets HSPA (HSDPA and HSUPA) even though the ROMs have a H+ symbol. That's interesting.
kangi26 said:
I don't think just flashing the modem will do it, you'd need to install Fasty's(or any other i9000 based ROM) in order to use the HSPA+(AT&T calls 4G). Which, the only change is the increased upload speeds(HSUPA)
You are thinking of HSUPA, which as I understand it is not the same as HSPA+. It is all very convoluted and confusing so I hope someone will correct me if I get parts of it wrong, but here is my understanding:
AT&T uses both UMTS and HSPA (which consists of HSDPA for download and HSUPA for upload) for it's 3G networks. HSPA is faster, but both are considered 3G.
I believe the only AT&T phone that supports both HSDPA and HSUPA is the iPhone 4. All i897-based ROMs for the Captivate (including Fasty) support HSDPA but not HSUPA.
All i9000-based ROMs do support HSUPA and HSDPA. HSUPA, while only speeding up uploads, also decreases latency so it makes the network faster overall. The trade-off is that i9000 modems can't utilize the audience chip, so you lose hardware-noise cancelling.
AT&T uses both LTE and HSPA+ and calls them both 4G, but HSPA+ and HSUPA are not the same thing. To the best of my knowledge, you cannot get HSPA+ on any captivate ROM.
To summarize for the OP, Fasty may show an "H" in the status bar, but it's not HSPA+. It just means you are connected to an HSPA-capable tower (and even then, you are only using HSDPA). You could try an i9000-based ROM to get slightly faster speeds because they also support HSUPA, but it will still not be HSPA+. For that, you would need a 4G-capable phone.
Edit: Too slow
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kangi26 said:
I don't think just flashing the modem will do it, you'd need to install Fasty's(or any other i9000 based ROM) in order to use the HSPA+(AT&T calls 4G). Which, the only change is the increased upload speeds(HSUPA)
You are thinking of HSUPA, which as I understand it is not the same as HSPA+. It is all very convoluted and confusing so I hope someone will correct me if I get parts of it wrong, but here is my understanding:
AT&T uses both UMTS and HSPA (which consists of HSDPA for download and HSUPA for upload) for it's 3G networks. HSPA is faster, but both are considered 3G.
I believe the only AT&T phone that supports both HSDPA and HSUPA is the iPhone 4. All i897-based ROMs for the Captivate (including Fasty) support HSDPA but not HSUPA.
All i9000-based ROMs do support HSUPA and HSDPA. HSUPA, while only speeding up uploads, also decreases latency so it makes the network faster overall. The trade-off is that i9000 modems can't utilize the audience chip, so you lose hardware-noise cancelling.
AT&T uses both LTE and HSPA+ and calls them both 4G, but HSPA+ and HSUPA are not the same thing. To the best of my knowledge, you cannot get HSPA+ on any captivate ROM.
To summarize for the OP, Fasty may show an "H" in the status bar, but it's not HSPA+. It just means you are connected to an HSPA-capable tower (and even then, you are only using HSDPA). You could try an i9000-based ROM to get slightly faster speeds because they also support HSUPA, but it will still not be HSPA+. For that, you would need a 4G-capable phone.
Edit: Too slow
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The Captivate had HSDPA built in and ready for normal use. However, the captivate has the hardware capability for HSUPA, but apparently AT&T disabled it for marketing reasons (to promote the iPhone over it, at least that's just what I've heard). The above post is 100% correct in stating that you can use HSUPA if you have an i9000-based modem and a kernel that allows it, at the loss of hardware noise cancelling. The captivate's hardware cannot support HSPA+, much less LTE. So yes, HSUPA works, but it only improves upload speeds.
But if you want faster internet, I saw a thread on one of the captivate forums where the user told AT&T they acquired a 4G Infuse (which was a lie), and wanted to add 4G to their data plan. Then they modified the build.prop and APNs and were able to increase their network speed
Found it: http://forum.xda-developers.com/showthread.php?t=1150410
korockinout13 said:
But if you want faster internet, I saw a thread on one of the captivate forums where the user told AT&T they acquired a 4G Inspire (which was a lie), and wanted to add 4G to their data plan. Then they modified the build.prop and APNs and were able to increase their network speed
Found it: http://forum.xda-developers.com/showthread.php?t=1150410
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Click to collapse
It is physically impossible to connect to HSPA+ on a Captivate. It doesn't support the bands, nor will the hardware allow it. He was only getting about 2.5-2.8mbps which is 3G, and what I got on stock Froyo. Technically speaking, our phones support HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps, while HSPA+ on the Infuse 4G is HSDPA 21 Mbps, HSUPA 3.6 Mbps. AT&T can also tell what phone you have based on your IMEI, which he changed on his Captivate (which is a felony). The build.prop edits may increase speeds, but adding 4G won't, he also said he connected to "H" which, once again, isn't 4G it is regular old HSPA (3G upload and download).
Just flash an i9000 rom, kernel, and modem, and you can get much faster download and upload speeds. I am able to achieve almost 6 Mbps on my Captivate.
nygfan760 said:
It is physically impossible to connect to HSPA+ on a Captivate. It doesn't support the bands, nor will the hardware allow it. He was only getting about 2.5-2.8mbps which is 3G, and what I got on stock Froyo. Technically speaking, our phones support HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps, while HSPA+ on the Infuse 4G is HSDPA 21 Mbps, HSUPA 3.6 Mbps. AT&T can also tell what phone you have based on your IMEI, which he changed on his Captivate (which is a felony). The build.prop edits may increase speeds, but adding 4G won't, he also said he connected to "H" which, once again, isn't 4G it is regular old HSPA (3G upload and download).
Just flash an i9000 rom, kernel, and modem, and you can get much faster download and upload speeds. I am able to achieve almost 6 Mbps on my Captivate.
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Click to collapse
Your numbers on the Inspire are a little off. HSDPA=14.4 mbps, HSUPA=5.76 mbps, not your quoted numbers.
As for the Captivate, I've never saw or heard anyone getting more than 6mbps. But 5+ is pretty good. My personal best is about 4.
I have gotten 5.5 down and 4 up before, but that is the best I have ever gotten! That was along time ago and I have flashed and lost the data, but I promise I got!
LOL its not a competition.
Sent from my GT-I9000 using Tapatalk
mrhaley30705 said:
Your numbers on the Inspire are a little off. HSDPA=14.4 mbps, HSUPA=5.76 mbps, not your quoted numbers.
As for the Captivate, I've never saw or heard anyone getting more than 6mbps. But 5+ is pretty good. My personal best is about 4.
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Those are the generic numbers. My numbers were taken from GSM Arena, Phone Arena and other spec sites.
nygfan760 said:
Those are the generic numbers. My numbers were taken from GSM Arena, Phone Arena and other spec sites.
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Then you must mixed them up. My numbers are from gsm arena.
mrhaley30705 said:
Then you must mixed them up. My numbers are from gsm arena.
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...The guy in the guide, that modded is IMEI, said he had an INFUSE 4G not an INSPIRE.
Here:
Googled and found a Infuse IMEI. Called AT&T. Told them I acquired a new Infuse 4G and would like to add it to my service while also havig the faster 4G speeds on my unlimited data plan. Not a problem, Gave them the IMEI. Set it up and asked them to confirm the SOC code for me, HSDPPB. Good to go.
I need a recommendation for modem that would work well with a carrier using UMTS 2100 and GSM 1800.
No doubt the best thing is to try a few recent ones and pick your favorite. There is a sticky in development with plenty. My wife uses ugkg3 on 2100 with good results but each phone/location is different. you can use service mode to verify your signal.
Phoned in.....
fractaline said:
No doubt the best thing is to try a few recent ones and pick your favorite. There is a sticky in development with plenty. My wife uses ugkg3 on 2100 with good results but each phone/location is different. you can use service mode to verify your signal.
Phoned in.....
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Click to collapse
Would service mode tell me then what bands are enabled for the current modem?
I need to make sure GSM 1800 is also enabled in case there is a drop in the 2100 signal in certain areas.
Are I9000 modems compatible to use on captivate ?
Depends on your ROM/kernel. If you're using a i897 ROM/kernel (like kk4) then no. If you're using an i9000 ROM/kernel (like jvt) or ics then yes. But you need to make sure you flash the correct one for your set up. And no, service mode will not tell you what the modem is able to use. If I'm not mistaken all four gsm bands are active in all the modems.
Phoned in.....
I'm using SLIM ICS and found the following link with bunch of modems:
http://www.badworker.net/i9000/Modem/AOSP/
Are these OK for me to flash via CWM ?
not sure about those really.
I use these
http://soggycashew.weebly.com/cm7miui--ics-modems.html
They are what you need.
Phoned in.....