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[Q] HSUPA and Data on Captivate Help

I seem to be having an issue with my data and am trying to narrow down the reasons for my problem. The issue is I CANNOT use HSUPA (H) for data, I always get a connection timed out issue. I put the phone in 2G GSM mode only and have data working, but of course I was spoiled with better speed I can't stand it.
My question is if AT&T could be doing upgrades to the towers in my area, will that affect my speeds, or is something broken internally in my phone. When I select WCDMA mode, it takes FOREVER for it to connect and says searching for a long time but does connect or displays (H) with 3/4 bars of signal. My friend has an unrooted captivate on 3G and has no issue with data. Does anyone know the cause of this.
I have tried a few different modems (jl3, jk4, kp1....) all the same and have tried 2 different OS's with same data timed out issues while trying to use (H). I am currently in the process of flashing back to stock to see if that will resolve the issue. Thank you for your time guys.

Thanontos said:
I seem to be having an issue with my data and am trying to narrow down the reasons for my problem. The issue is I CANNOT use HSUPA (H) for data, I always get a connection timed out issue. I put the phone in 2G GSM mode only and have data working, but of course I was spoiled with better speed I can't stand it.
My question is if AT&T could be doing upgrades to the towers in my area, will that affect my speeds, or is something broken internally in my phone. When I select WCDMA mode, it takes FOREVER for it to connect and says searching for a long time but does connect or displays (H) with 3/4 bars of signal. My friend has an unrooted captivate on 3G and has no issue with data. Does anyone know the cause of this.
I have tried a few different modems (jl3, jk4, kp1....) all the same and have tried 2 different OS's with same data timed out issues while trying to use (H). I am currently in the process of flashing back to stock to see if that will resolve the issue. Thank you for your time guys.
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Click to collapse
H doesn't necessary mean HSUPA. It simply means HSPA (HSDPA only or HSDPA and HSUPA). You didn't mention anything about your firmware but I guess you are experiment with non-Captivate firmware and modem combination trying to get HDUPA working. From what you described, it seems your current firmware and modem combinations lacks 850MHz support for 3G (most European firmwares lacks 850Mhz) and your local tower happens to use 850MHz, not 1900Mhz. Just a guess.

Make sure you have the modern set to proper frequency (WCDMA 850 or 1900) for your area. The modem thread can tell you all about how to do it.
Sent from my SAMSUNG-SGH-I897 using XDA App

Sorry guys, I guess that was an important part I forgot. I was running Andromeda and thought the same so tried Cognition 4.1.1. Also after going to stock 2.1 I still have the data issue. I can connect to wifi just fine, but no using ATT data will work.
I called customer service and walked through the steps as usual and after some looking into my area, he said there were 3 towers reporting severely degraded. It just sucks seeing my friends phones working with no issues. He said that repairs are stated to be finished sometime in the next few days and to call back later in the week if the problem persists.

Looks like you tried both i897ROM and non-i897 ROM, so it's not firmware related.
Did you try to put someone else's SIM into ur captivate? How about some other devices in ur area?

amtrakcn said:
Looks like you tried both i897ROM and non-i897 ROM, so it's not firmware related.
Did you try to put someone else's SIM into ur captivate? How about some other devices in ur area?
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Click to collapse
I didn't think about trying my friends sim card. I will test tomorrow morning. Ty for the idea to isolate the problem to my phone!

umm not really related to your phone. but im suggesting its the tower upgrades getting them ready for 4G that is causing your phone to act up. i have a HD2 and we have 3G down here. but since early march i get nothing but EDGE. what happens in the month march? AT&T will be launching 4G in selected markets. it was confirmed once i was talking to a AT&T tech. so im just waiting to see what happens in the end of this month.
NOTE: it could also be your sim card having problems. AT&T replaced mine thinking it was a problem with the sim card since i have a AT&T native W350 and i was getting the same problems. call them up again and ask to talk to a tech and tell them your having a problem with your sim card. they will set you up a appointment at a corporate store. free of charge.

I did not think that the Captivate's hardware was capable of HSUPA?
Is it?

bobapunk said:
I did not think that the Captivate's hardware was capable of HSUPA?
Is it?
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Click to collapse
there is a thread on how enabling HSUPA on the captivate. so if we can enable it im sure its capable.
heres the link if you want to read up on How to enable HSUPA on the Samsung Captivate

bobapunk said:
I did not think that the Captivate's hardware was capable of HSUPA?
Is it?
Click to expand...
Click to collapse
it is capable but att blocks it to save bandwidth

hmm,
That thread has not been updated for a long time...
What would happen if I flashed that i9000 modem with a KB1 based Kernel?
sal2708 said:
there is a thread on how enabling HSUPA on the captivate. so if we can enable it im sure its capable.
heres the link if you want to read up on How to enable HSUPA on the Samsung Captivate
Click to expand...
Click to collapse

bobapunk said:
What would happen if I flashed that i9000 modem with a KB1 based Kernel?
Click to expand...
Click to collapse
you would have data, but no voice

Sorry for nor replying sooner. My 3G data seems to be working again. My lack of in depth knowledge is why I put the hsupa above when my phone displayed H I didn't know what to call it.
It must have been tower upgrades. I didn't restart my phone and left it on the charger overnight and the next morning I had no issues. I did a reboot of the phone as a test and connected with data with no issue. Too bad as I was close to getting a replacement, though it would suck and be my luck to get one with other issues. Mine is a 1007 and works perfect (other than the obvious GPS.)
Sent from my SAMSUNG-SGH-I897 using XDA App

Pirateghost said:
you would have data, but no voice
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Click to collapse
That is what I thought, thanks!

[Q] Radio problems STILL on GS3

I have one of the original GS3's that came with the 'No Sim' error from the factory. I have since installed CM10.1 and now instead of the error the phone just reboots. It works fine on certain towers but there are some Verizon towers I get close to and I cant place a call or text without the phone rebooting. Is there a different kernel or anything that someone knows of that I can flash to help this? I am getting tired of only being able to use my phone in certain parts of town. I have ran several versions of CM10 with the same results. Currently on CM10.1 RC4. Thanks

chisam14 said:
I have one of the original GS3's that came with the 'No Sim' error from the factory. I have since installed CM10.1 and now instead of the error the phone just reboots. It works fine on certain towers but there are some Verizon towers I get close to and I cant place a call or text without the phone rebooting. Is there a different kernel or anything that someone knows of that I can flash to help this? I am getting tired of only being able to use my phone in certain parts of town. I have ran several versions of CM10 with the same results. Currently on CM10.1 RC4. Thanks
Click to expand...
Click to collapse
1. Kernels don't have anything to with the radio signal the modem however does .
2. I have mentioned this to others that your location and how well designed the radio is determines how good or bad is your signal strength.
3. You can flash different modems to see if that will help and here it is:http://goo.im/devs/invisiblek/i535/modems

jmxc23 said:
1. Kernels don't have anything to with the radio signal the modem however does .
2. I have mentioned this to others that your location and how well designed the radio is determines how good or bad is your signal strength.
3. You can flash different modems to see if that will help and here it is:http://goo.im/devs/invisiblek/i535/modems
Click to expand...
Click to collapse
Thanks for the response. Was the original NO SIM issue due to the modem? Also, are there any of the modems on that list that are preferred over others?

chisam14 said:
Thanks for the response. Was the original NO SIM issue due to the modem? Also, are there any of the modems on that list that are preferred over others?
Click to expand...
Click to collapse
I honestly don't know as I got this phone 4 months after its release so that issue was resolved by then. Like I said in my previous post that your location and how well built the radio is determines the overall signal strength so the modem might not help. I live in New York City so I don't experience bad signal strength in most areas in the city. In the end you have to try for yourself as someone living one area won't likely to have the same results as you.

Please Help! Nexus 5 Signal Issue(Not rooted)

I just got my Nexus 5 and I haven't root it yet. I notice that everytime I don't use my phone 5-10 minutes or hours, the signal will be lost and asking to reboot my phone. I can't tell when it's up or not. Sometime I take multiple reboot to get signal back up then it happens again and again. Is there a way to fix this problem without rooting? I don't think it's the Sim Card because I used it on my nexus 4 without any problem. or Just my device isn't good one. Please help!

Whose your carrier?

markdapimp said:
Whose your carrier?
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I have T mobile.

lsou said:
I have T mobile.
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What version of KitKat? If 4.4, flash the update. If not, flash 4.4 radio.

Aerowinder said:
What version of KitKat? If 4.4, flash the update. If not, flash 4.4 radio.
Click to expand...
Click to collapse
I didn't root my phone yet, and I'm running 4.4.2 now. It's annoying to keep losing signal and it's back again. Even I have signal, I only have 1 bar compare to my old Nexus 4 has 3 bar or HTC one full bar.

I don't want to root it if its not solve this problem, I will have to return it.

There was an issue on 4.4 where it would randomly give you the "emergency only" message. You would have to turn on airplane mode and then turn it off, or reboot. But people have been saying it was fixed with 4.4.1/4.4.2.

PsychDrummer said:
There was an issue on 4.4 where it would randomly give you the "emergency only" message. You would have to turn on airplane mode and then turn it off, or reboot. But people have been saying it was fixed with 4.4.1/4.4.2.
Click to expand...
Click to collapse
The radio however sucks in 4.4.2 and was better in 4.4.1
perhaps we may see 4.4.3 to fix this?

markdapimp said:
The radio however sucks in 4.4.2 and was better in 4.4.1
perhaps we may see 4.4.3 to fix this?
Click to expand...
Click to collapse
I think it might be overall worse, but luckily I actually didn't see any decrease in signal in my area. I was really worried about it because I already have really bad signal in my house but 4.4.2 doesn't seem to be worse for me.

You guys forget to mention that Google cheaped out on the antenna to cut costs. Best you can do is to flash your carrier's radio over the generic one
Sent from my Nexus 5

dicecuber said:
You guys forget to mention that Google cheaped out on the antenna to cut costs. Best you can do is to flash your carrier's radio over the generic one
Sent from my Nexus 5
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each nexus device has a different build quality looks like the newer ones based off the serial number looks to be a tad better signal wise

Upcoming Update
dicecuber said:
You guys forget to mention that Google cheaped out on the antenna to cut costs. Best you can do is to flash your carrier's radio over the generic one
Sent from my Nexus 5
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Click to collapse
I'm sorry, but you're dead wrong. SO much misinformation here. First off, there is no "carrier" or "generic" baseband. There is only one baseband. Second, antenna design requires a lot of engineering to maximize signal efficiency when you're dealing with interference from such things as wifi, nfc, Bluetooth, metal construction in the phone, etc.. I'm not sure what magical material you think that cell antennas should be made of that will solve issues?
I just got off of the phone with Sprint. They show that there is an internal memo on the issue and LG is aware of it. They will be pushing an update as soon as it's ready. Sprint will also be pushing an update for the Airave to help with the issue. The support rep told me that it is an issue where the wifi and LTE radios aren't playing nicely together and causing a conflict. That's why everything seems to work fine when 3G is set as a preferred network.

It's an issue that still hasn't gotten fix as seen here.
http://forum.xda-developers.com/showthread.php?t=2525583&highlight=emergency
I'm going to have to buy a different phone because I have no signal almost everywhere I go. I switched my SIM to my wife's Note 2 and I had great signal and her SIM in the N5 had no signal.

I
The issue seem to be gone after couple days. I checked signal strength app, it shows same even though it shows only 1 bar.

Questions regarding Receptions and Roms

Hey guys, I just not a Nexus 5 and i'm loving it thus far. Just had a few questions.
1. Are there any scripts, Roms, mods, or scripts that will help improve receptions or would allow the phone to stay connected to low reception? I have enough reception at home to place a call and walk around the entire house. However, if I'm not on the phone, at some places in the house, the reception will get completely dropped to no service.
2. Secondly, i know that WiFi calling does not work on our phones, but has anyone found a work around for this problem?
Thanks guys.

EVO-lution said:
Hey guys, I just not a Nexus 5 and i'm loving it thus far. Just had a few questions.
1. Are there any scripts, Roms, mods, or scripts that will help improve receptions or would allow the phone to stay connected to low reception? I have enough reception at home to place a call and walk around the entire house. However, if I'm not on the phone, at some places in the house, the reception will get completely dropped to no service.
2. Secondly, i know that WiFi calling does not work on our phones, but has anyone found a work around for this problem?
Thanks guys.
Click to expand...
Click to collapse
1. no. maybe a hardware mod to attach a better antenna.
2. its tmobile wifi calling that doesnt work. use a different service https://play.google.com/store/search?q=wifi+calling&c=apps

simms22 said:
1. no. maybe a hardware mod to attach a better antenna.
2. its tmobile wifi calling that doesnt work. use a different service.
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Click to collapse
Would i be able to use a different service and use my phone number? if so, what is the name of said service.

EVO-lution said:
Would i be able to use a different service and use my phone number? if so, what is the name of said service.
Click to expand...
Click to collapse
i dont know. you can search though, here are some apps https://play.google.com/store/search?q=wifi+calling&c=apps

[Q] No signal strength all of a sudden

Hello,
I bought my Nexus 5 on the 11th of December 2013 and it had been working flawlessly ever since. Since last week, I started noticing the occasional signal drop and I'd be out of cell reception but would usually be back up within no time. However, yesterday, out of the blue I'm travelling on the highway and my signal strength disappears never to come back again. I've tried the following:
- Restore old backup (including EFS)
- Went back to stock from PA
- Upgraded to the latest radio
- Took back cover off to see if anything was wrong but found nothing.
- Tried another SIM card
Nothing worked. My SIM card works fine in another phone. Everything else such as WiFi and Bluetooth works flawlessly but I just don't get any reception.
This is very disappointing and I have my fingers crossed hoping someone can help me with this since I didn't plan on getting a new device for at least another year especially after paying $520 USD for my phone here in my country.
Thank you for looking.

im having a similar problem with the radio after the last few otas. im getting a lot of dropped calls on 3g aws...
im going to try to revert to an old radio as i don't think this is a hardware failing issue..
Sent from my Nexus 7 using Tapatalk

Flash stock firmware with fast boot. If its the same, its a carrier issue....call them to see. Or its hardware failure.

just wanted to post my fix for this issue - very disappointed with Google that i had to do this...my provider is mobilicity canada (3g aws band fyi)
flash krt01b radio from this thread...
http://forum.xda-developers.com/showthread.php?t=2514095
this is *not* a carrier or hardware issue (at least in my case)
seems others are having same issue
https://code.google.com/p/android/i...s Owner Summary Stars&groupby=&sort=&id=70878

Then it is a carrier issue....cause on Telus in Canada....never had an issue with any radio version. ?

telus would have a stronger overall signal but uses AWS band for lte which is different than mobilicitiy 3g aws...

I'm not disagreeing.... Just saying its the carrier....not Google.
See my point?

KJ said:
I'm not disagreeing.... Just saying its the carrier....not Google.
See my point?
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Click to collapse
are you saying mobilicitiy is purposely weakening their cell signal cause they are almost bankrupt ?
i still blame google i had no issues with the radio before they borked it...

nolook said:
are you saying mobilicitiy is purposely weakening their cell signal cause they are almost bankrupt ?
i still blame google i had no issues with the radio before they borked it...
Click to expand...
Click to collapse
Just saying that unless many have the issue with the phone or radio, then its an issue.....if not, it isnt .
So in this case, it leaves hardware or carrier....assuming a stock flash didn't help.
If flashing another radio helps the OP...awesome!! But the new radio does work fine for the mass majority.
Hope it does work for him tho!