Develop Bugs

Why am I only getting 1x speeds on custom ROMs?

I have a epic touch 4g flashed to cricket and I was on wondering why I get 1x on custom ROMs but stock ROMs are just fine. And when I do get 3g the data acts weird and cuts on and off.
Sent from my SPH-D710 using xda app-developers app

It might not be that you are even on 3G but sprint has this little habit of lying on their stock ROMs by making it so it always shows 3G even when connected to 1x. The devs on xda have made it so that in ROMs shows the true connection such 1x/3G.
A good way to verify while on stock is to go look on the about phone to see what you are connected to or use netmonitor/speedtest to see what connection you are on.
Sent from my Galaxy Nexus using Tapatalk 2

I had a ROM they showed real speeds and I was on 3g. The ROM was basically a slightly modified stock though....
Sent from my SPH-D710 using xda app-developers app

another welcome to sprint thread.. my speeds are always at 1x no matter what rom/modem im on because of my area
Sent from my SPH-D710 using XDA

Well first crickets 3g doesn't work very well on sprint phones, if you want real 3g you need a cricket phone or be on Sprint.
Data does work on touchwiz roms though, and if you want aosp you have to flash a fix to get it to work on those, but it won't be even close to 3g unless your lucky.
If you don't have the fix its here http://forum.xda-developers.com/showthread.php?t=1479175 use the ics one for ics and jb.

I've gotten 1.6 Mb/s download speed on aosp jb with Cricket, although average during the day is more like 800Kb/s. Area, PRL, signal strength, etc play a huge role as well.
Trolling from my Cricket-flashed Galaxy S2 E4GT using Tapatalk 2

From 4G to Edge, No 3G

Why is it that I only flip between 4G and Edge but have no 3G. Does anyone else have this or is it a t mobile network thing?
Sent from my SGH-T999 using xda app-developers app

Pivo99 said:
Why is it that I only flip between 4G and Edge but have no 3G. Does anyone else have this or is it a t mobile network thing?
Sent from my SGH-T999 using xda app-developers app
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It depends...are you stock, rooted stock, or custom ROM? The reason I ask (regardless of settings) is I never got 3G on stock. After I rooted and used Kasper's AOKP nightlies my phone would use Edege, G, 3G, and 4G. Where I work the signal wasn't so good so locking onto 3G was tough but with the J4 and JA modems now I can consistently hold 3G with the AOKP ROM.
My opinion is to check for the newest modem which is JA (Jelly Bean update) if you are rooted and use that from the modem download thread here on XDA. If you aren't rooted wait for the upgrade and you will get that modem regardless.
However, AOKP ROM most likely works differently so you still might not see 3G if you are stock JB that's why I think we would needa bit more info.

I'm stock everything for a change lol. I also have the latest jelly bean update. I haven't seen 3G once on the phone since I've gotten it. It's really weird...
Sent from my SGH-T999 using xda app-developers app

Your second guess is correct. Tmo is edge or a highly evolved version of 3g. It has nothing to do with stock vs rooted. The modem or kernel may help a little depending on what you are running. If you are in high speed 3g area aka 4G be happy.

Yeh it just gets annoying when I drop straight from 4G to Edge. :what:
Sent from my SGH-T999 using xda app-developers app

TomTcom said:
It depends...are you stock, rooted stock, or custom ROM? The reason I ask (regardless of settings) is I never got 3G on stock. After I rooted and used Kasper's AOKP nightlies my phone would use Edege, G, 3G, and 4G. Where I work the signal wasn't so good so locking onto 3G was tough but with the J4 and JA modems now I can consistently hold 3G with the AOKP ROM.
My opinion is to check for the newest modem which is JA (Jelly Bean update) if you are rooted and use that from the modem download thread here on XDA. If you aren't rooted wait for the upgrade and you will get that modem regardless.
However, AOKP ROM most likely works differently so you still might not see 3G if you are stock JB that's why I think we would needa bit more info.
Click to expand...
Click to collapse
Pivo99 said:
I'm stock everything for a change lol. I also have the latest jelly bean update. I haven't seen 3G once on the phone since I've gotten it. It's really weird...
Sent from my SGH-T999 using xda app-developers app
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Click to collapse
T-Mobile uses HSPA+ for their current 4G network, which is just an extension of their 3G network. So, if you're on stock, it will jump from Edge to 4G, since T-Mobile's 3G and 4G are of the same technology.
When you're rooted, it will show 3G while your phone is at rest. As soon as "heavy" loads come in, it will shoot straight 4G. At times of very light loads, your phone might stay on 3G, but it's rare.
Bottom line, you're phone is perfectly fine when it jumps from 4G to Edge. Stock won't differentiate the two (3G&4G).

Well described... Thanks for clearing that up. Hopefully it helped some other people also.
Sent from my SGH-T999 using xda app-developers app

Unlocking Q

If I unlocked my Hercules and used at&t prepaid and flashed a skyrocket radio would I be able to use their data? And also would the data be just as fast?
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

Yes I think so might just have to change APN settings

How do you do that?
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

I'm not for sure you may not have to. I only know how to change APN on a iPhone. You should be OK with just an unlocked t989 and radio change

I believe you could use it, but it would only be 2g because at&t uses LTE for their high speed networks. The physical radio itself in our Hercules just doesn't support it.
Sent from my SAMSUNG-SGH-T989 using xda premium

But a att radio should fix that

No, not the software radio. That will give you the 2G signal, but we don't have the actual physical hardware to run full speed on at&t's network. That's part of why the Hercules has a different processor, the one in the international/att sII wouldn't work with tmo's hspa network.
Sent from my SAMSUNG-SGH-T989 using xda premium

You would be able to use your Hercules on AT&T but if the fast data you're referring to is 4G LTE, then no, you won't get that because the Hercules doesn't have the hardware needed to support it. You would get HSPA+ though.
Sent from my SAMSUNG-SGH-T989 using xda premium

Couldn't you turn off 4g and just pull 3g and it work that way?

zombielion said:
Couldn't you turn off 4g and just pull 3g and it work that way?
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Click to collapse
No. You could turn off 4G and get EDGE/2G though.

On Verizon phones you can turn off 4g to only use 3g why would it not be the same

zombielion said:
On Verizon phones you can turn off 4g to only use 3g why would it not be the same
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T-Mobile's 3G/4G networks run on the same bands so you can't block something on one band and only let the other thing work. I guess Verizon has different bands for 3G/4G.
Sent from my SAMSUNG-SGH-T989 using xda premium

I see got cha.. I didn't know

I hope i'm not hijacking here but I have a similar question. I'm in an at&t lte market and was considering using my t989 with at&t via straightalk. Would I be better off to sell my phone and get a "true" at&t phone that does LTE?

philo_ said:
I hope i'm not hijacking here but I have a similar question. I'm in an at&t lte market and was considering using my t989 with at&t via straightalk. Would I be better off to sell my phone and get a "true" at&t phone that does LTE?
Click to expand...
Click to collapse
If you use Straight Talk, then no matter what phone you use, you won't get LTE so it doesn't matter if you use a T989 or an AT&T phone.
Sent from my SAMSUNG-SGH-T989 using xda premium

Thanks for the info. I'm still looking at options. Appreciate the quick reply.

Using my T989 on AT&T

I am going to be passing down my unlocked S2 to my girlfriend that is currently(for now) on ATT. I am running "Jedi Bean" now and just like everyone else on a 4.1 ROM, I dont have signal strength bars.
My question are:
*Is there anyway for me to get Signal strength bars with a T989 on ATT?
*Should, or could I even, flash an ATT radio? Would it help reception on ATT?
Please give me some ideas as to what I can do to make my T989 run as flawless, and as "normal", as possible on ATT's network.

U will only get 2g speed I would recommend selling or trading for a skyrocket
Sent from my SGH-T989

ted619 said:
U will only get 2g speed I would recommend selling or trading for a skyrocket
Sent from my SGH-T989
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Click to collapse
I know it cant get 4G, but I thought the T989 is capable of 3G on AT&T, it has the band for it...The main reason I am giving my girlfriend the S2 is so she can have all the Samsung apps and enjoy a better phone than she has; currently an HTC Inspire. I dont want to sell/trade it is because its my spare phone now that I sold my Galaxy S.
Side note: My girlfriend barely uses data, so the reduced speed is not a big deal.

It gets 3g on at&t because occasionally when I go out of my hspa 4g range like in middle of nowhere my phone will link up to an at&t tower on the edge network which is technically 3g. Sometimes its gprs 2g but it does get 3g on at&t signal.
Sent from my SGH-T989 using Tapatalk

I also have a t989 on at&t and don't use data so is it possible to flash a different radio for better clarity?
My default radio is UVLC8
Sent from my SGH-T989 using xda app-developers app

abhi08638 said:
I also have a t989 on at&t and don't use data so is it possible to flash a different radio for better clarity?
My default radio is UVLC8
Sent from my SGH-T989 using xda app-developers app
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Click to collapse
Doesnt look like anyone has an answer for us...

Yeah so i tried it anyway and it the UVLI4 radio works flawlessly for me.
Sent from my SGH-T989 using xda app-developers app

[Q] Data issues with SGH-m919 using att

I unlocked my T-Mobile galaxy s4 and have been using it on AT&T for the post free months, since then I'm experiencing horrible data issues, can any one help?
Sent from my SGH-M919 using xda app-developers app

What is the horrible data issues that you're taking about? Please be more specific. More info would help is help you
☞Sent from here☜

ds337135 said:
I unlocked my T-Mobile galaxy s4 and have been using it on AT&T for the post free months, since then I'm experiencing horrible data issues, can any one help?
Sent from my SGH-M919 using xda app-developers app
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Do you know if the tmobile m919 can receive 4g lte data on the att? thinking about unlocking mines as well just to have options
Sent from my SGH-M919 using Tapatalk 4

jjluv86 said:
Do you know if the tmobile m919 can receive 4g lte data on the att? thinking about unlocking mines as well just to have options
Sent from my SGH-M919 using Tapatalk 4
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If i could piggy back off this thread, I also have a tmo s4 on att network. Yesterday I was with a friend who was also on att and I noticed his phone at that time had 4g where the network bars were located, mine however read H+. It was then I realized that I have never seen the 4g symbol on my phone ever. Do I just not get 4g? Or does this ROM that I have on my phone (slim bean) either not have the files for 4g or maybe its originally a T-Mobile ROM so I'm not getting 4g I don't know. I do get LTE tho.

projectpaki said:
If i could piggy back off this thread, I also have a tmo s4 on att network. Yesterday I was with a friend who was also on att and I noticed his phone at that time had 4g where the network bars were located, mine however read H+. It was then I realized that I have never seen the 4g symbol on my phone ever. Do I just not get 4g? Or does this ROM that I have on my phone (slim bean) either not have the files for 4g or maybe its originally a T-Mobile ROM so I'm not getting 4g I don't know. I do get LTE tho.
Click to expand...
Click to collapse
E is 2g/edge H is 3g H+ is 4g when you see 4g/lte that is LTE if your using and aosp based or international ROM... Hope that makes sense to ya
Sent from my SGH-M919 using Tapatalk

pyro43284 said:
E is 2g/edge H is 3g H+ is 4g when you see 4g/lte that is LTE if your using and aosp based or international ROM... Hope that makes sense to ya
Sent from my SGH-M919 using Tapatalk
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Ok this makes sense, thanks.

I had the same issues. If your previous phone that you used on AT&T was only 3G (I had an iPhone 4), your SIM card is only configured to receive and transmit 3G data. You will need to go on to wireless.att.net and order a new 4G SIM card, or go to a store and have them program one for you. This is assuming that you have already signed up for one of the new data plans, if not, they will likely not issue a SIM card capable of 4G and will probably hound you via email and SMS about using a 4G device on an old 3G data plan.