Develop Bugs

[Q] Mobile data is stuck on "G"

I have finally acquired a data plan from my cell provider, and today I set up the APN settings for it. However, whenever I turn off the wifi, I only get the "G" (GPRS) icon in the status bar, with unbelievable slow download/upload speeds.
I just now tried flashing my radio to Radio_12.28e.60.140f_26.04.02.17_M2_SF (Even though I believe I had it before as well), and still I can't get it up to "H" (HSPDA).
I asked a co-worker with a Galaxy S on the same cell provider, and he has HSPDA speed at the same location as I. I also compared his APN settings to mine.
What can cause this error? Should I try flashing a different radio? is the Radio_12.39.60.19_26.06.04.06_M or Radio_12.35d.60.140f_26.06.03.24_M2 better in any way? Are they stable? Is this even the cause of my problem?
I have moved this question from the "Android Development" forum (sorry) - and over there I was told to use
*#*#4636#*#* -> Phone information -> WCDMA preferred
or
*#*#4636#*#* -> Phone information -> GSM auto prl
I tried both options, and when I tried "WCDMA only" I got disconnected, when I use any "preferred" setting, I get "Network type: GPRS".
I checked with my co-worker, and he has "GSM/CDMA auto (PRL)" - trying that I am still stuck on "GPRS" as my network type (He has "HSPDA" on his network type)
Are there any other hidden locations I need to check, in order to finally get HSPDA?

where did you buy it?
there are different "versions" out there with different frequencies.
"G" (GSM) is available in every country..but EDGE, UMTS, HSDPA, etc have different frequencies..that could be a reason why it doesnt work.
DN41

I have ordered my DHD from France, but I believe it came from Spain, according to the English (Spain) and English (Catalan) languages on it.
Where can I see what frequencies it support, and how can I change it/fix it?
I just checked. The DHD is
Europe:
HSPA/WCDMA: 900/2100 MHz
GSM: 850/900/1800/1900 MHz
Both Israel and Spain (And France) is on 2100, so I think it should be OK...

seems that this is not the problem
if it would've been the wrong "revision" with different frequencies, you couldn't have done anything.
seems like a software problem...does other sim cards work?
DN41

Try
Settings, wireless and networks, mobile networks, network modes.
This give options for WCDMA only, GSM only and GSM/WCDMA auto.
Hope this helps.
Sent from my Desire HD using XDA App

you might also want to check you have a 3G capable sim card, if you have only just aquired a data plan

Someone once told me there is no such thing as 3G sim - they are all basically the same, except for the on card memory size (64/32MB, or something like that). I wasn't too sure he was right, but then my cell provider just told me he can give me the data plan, without the need to physically upgrade the sim card. Then again - what do they know?
Do you think it might be the case?

ATGardner said:
Someone once told me there is no such thing as 3G sim - they are all basically the same, except for the on card memory size (64/32MB, or something like that). I wasn't too sure he was right, but then my cell provider just told me he can give me the data plan, without the need to physically upgrade the sim card. Then again - what do they know?
Do you think it might be the case?
Click to expand...
Click to collapse
Yeah, pretty sure there's no 3G SIM card. The SIM card only identifies you to the network.

Yes, it was the sim card. Apparently mine was quite antique... Now it works just fine with H/3G.
Thanks for the help, though.

ATGardner said:
Yes, it was the sim card. Apparently mine was quite antique... Now it works just fine with H/3G.
Thanks for the help, though.
Click to expand...
Click to collapse
it's an orange thing, i couldnt get 3G for ages on orange, turned out they had only recently started providing 3G capable sim cards to PAYG customers lol

[Q] samsung s III trouble

hello everyone
i am from israel and i bought samsung s III from the usa AT&T one,now my problem is that the baseband of mine is I747UCLEM and in my country the baseband is like in europe,I9300 or something like that,i didn't know that when i bought it.
i don't have a problem with the baseband but some things doesn't work at all like turning the phone to modem,and video chats the does not exist at all,
there is something i can do to make those things work 'or changing the rom or something?
thanks ahead.

mooshon said:
hello everyone
i am from israel and i bought samsung s III from the usa AT&T one,now my problem is that the baseband of mine is I747UCLEM and in my country the baseband is like in europe,I9300 or something like that,i didn't know that when i bought it.
i don't have a problem with the baseband but some things doesn't work at all like turning the phone to modem,and video chats the does not exist at all,
there is something i can do to make those things work 'or changing the rom or something?
thanks ahead.
Click to expand...
Click to collapse
I'm guessing 100% on this. I'm from the USA and can only google things obviously, but from what I've researched the only two cellular frequencies operating in Israel right now are 900 MHz and 1800MHz for a base network and some providers using 850 MHz and 2100 MHz for 3G. The AT&T Galaxy S3 can operate on the following frequencies:
2G Network: GSM 850 / 900 / 1800 / 1900
3G Network: HSDPA 850 / 1900 / 2100
4G Network: LTE 700 MHz Class 17 / 2100
This means that if you were on a carrier that used 900 or 1800 MHz networks, you would only be achieving 2G network speeds which really are not sufficient for tethering and video chats.
Could you please provide your carrier so we can help you further? It could just be a matter of APN settings depending on your wireless carrier. Second question: Are you 100% sure the phone is SIM unlocked?
Also your baseband is related to your modem. UCLEM is the stock AT&T baseband. I9300 is the model number of the international Galaxy S3 and doesn't have anything to do with the baseband. Never flash an international modem on your AT&T S3 or you will risk a brick and or loss of your IMEI, something you should back up anyway.

stratatak7 said:
I'm guessing 100% on this. I'm from the USA and can only google things obviously, but from what I've researched the only two cellular frequencies operating in Israel right now are 900 MHz and 1800MHz for a base network and some providers using 850 MHz and 2100 MHz for 3G. The AT&T Galaxy S3 can operate on the following frequencies:
2G Network: GSM 850 / 900 / 1800 / 1900
3G Network: HSDPA 850 / 1900 / 2100
4G Network: LTE 700 MHz Class 17 / 2100
This means that if you were on a carrier that used 900 or 1800 MHz networks, you would only be achieving 2G network speeds which really are not sufficient for tethering and video chats.
Could you please provide your carrier so we can help you further? It could just be a matter of APN settings depending on your wireless carrier. Second question: Are you 100% sure the phone is SIM unlocked?
Also your baseband is related to your modem. UCLEM is the stock AT&T baseband. I9300 is the model number of the international Galaxy S3 and doesn't have anything to do with the baseband. Never flash an international modem on your AT&T S3 or you will risk a brick and or loss of your IMEI, something you should back up anyway.
Click to expand...
Click to collapse
ok so my carrier is HSDPA i am connecting in israel to company that calls "plephone" this company only has 3G,and for your other question when i got my phone it was locked for using here in israel so i opened it with a code like i saw on you tube and it works just fine for the basic things.
hope i helped you to help me.

Awesome. Are your APN settings as follows? You should have two. One for data and one for mms:
Pelephone APN settings for DATA
Name: Pelephone 3G
APN: internet.pelephone.net.il
Proxy:
Port:
Username: [email protected]
Password: pcl
APN type: default,supl
Pelephone APN settings for MMS
Name: Pelephone MMS
APN: mms.pelephone.net.il
Proxy:
Port:
Username: [email protected]
Password: pcl
Server: pelephone
MMSC: http://mmsu.pelephone.net.il
MMS proxy: 10.170.9.54
MMS port: 9093
APN type: mms
These should be correct and should allow you a good data connection. You should experiment with the data APN. I was reading that some people change the APN to sphone.pelephone.net.il and Authentication to PAP. Also some roms restrict tethering. If this doesn't work try a rom like triune II with unrestricted tethering and see if it works. Best of luck and welcome to XDA.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

hi i did what you told me yet i can't make video chats' and when i try turn it to a modem i get this massage "mobile data is not available or invalid sim"
i'm desprate:crying::crying::crying:

mooshon said:
hi i did what you told me yet i can't make video chats' and when i try turn it to a modem i get this massage "mobile data is not available or invalid sim"
i'm desprate:crying::crying::crying:
Click to expand...
Click to collapse
Weird. I'm sorry it didn't help you. It doesn't sound like a ROM issue, it truly sounds like you might have a bad SIM card or you're not provisioned for data OR the phone didn't unlock properly. Have you tried using the SIM in another phone?
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

mooshon said:
hi i did what you told me yet i can't make video chats' and when i try turn it to a modem i get this massage "mobile data is not available or invalid sim"
i'm desprate:crying::crying::crying:
Click to expand...
Click to collapse
Can you make regural calls? I you don't this seems like sim card is not unlock. If you do try diffriend modem and check if you APN's are 100% correct. Also for tethering you must root your phone and install correct mod.

hi
regular phone calls i can make i use the phone for almost 2 month, the sim card was before on my wife's iphone and worked perfectly,and allso on blackberry 9800.
mms messages i can send,but video call i can't accept, and in my phone i don't have the link to do video call when i press setting or when i want to call to one of my contacts,you see the problem is not that i can't make the video call but i don't have the link on setting or in my contacts to make this call.
if you suggest me to do root or something like that,please explain to me how to do it or give me link for explaination.
thanks

mooshon said:
hi
regular phone calls i can make i use the phone for almost 2 month, the sim card was before on my wife's iphone and worked perfectly,and allso on blackberry 9800.
mms messages i can send,but video call i can't accept, and in my phone i don't have the link to do video call when i press setting or when i want to call to one of my contacts,you see the problem is not that i can't make the video call but i don't have the link on setting or in my contacts to make this call.
if you suggest me to do root or something like that,please explain to me how to do it or give me link for explaination.
thanks
Click to expand...
Click to collapse
I see. VoIP and video calling isn't supported by AT&T stock software. In order to do a video call on Android you need a 3rd party application like Skype. There is no option to video call someone without using an application as an interface. Of course, the other person you're calling must also have that very same app installed to use it. I hope this helps.
As for your issue with using the phone for tethering: the stock AT&T software doesn't allow this. What you need to do is either use a 3rd party application to do this, or root your phone using the toolkit in the development section, install recovery, and flash a ROM that supports it. I'm still going to recommend Triune II by NunHugger. It has unrestricted tethering, it's based on stock firmware, and allows you to use all of the phones features. Best of luck to you.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

thanks for your help

[Q] unable to access 4G-LTE on unlocked LG G3 D850

Hello all,
Prior to going to the US last September I had checked with my carrier (Vivo) in Brazil that the 4G-LTE frquency they use is 2.600MHz. When in the US, I managed to buy the above said device and brought home. Back home, as it was
unlocked my carrier's SIM card worked like a charm. It downloaded from the carrier's network the APN configurations and all was fine.
I went to the carrier's shop to try the 4G-LTE so I could bump up my contract. I tried the clerk's SIM card (he has 4G-LTE) and the signal icon changed from 4G to a smaller 4G with underscore LTE. But only the 3G and 2G APNs were found when searching networks manually.
I did rooted the device and removed the bloatware that came along using this xda-developers how-to.
Any idea how can I get 4G-LTE access on my device?
Thanks in advance,
gtludwig

gtludwig said:
Hello all,
Prior to going to the US last September I had checked with my carrier (Vivo) in Brazil that the 4G-LTE frquency they use is 2.600MHz. When in the US, I managed to buy the above said device and brought home. Back home, as it was
unlocked my carrier's SIM card worked like a charm. It downloaded from the carrier's network the APN configurations and all was fine.
I went to the carrier's shop to try the 4G-LTE so I could bump up my contract. I tried the clerk's SIM card (he has 4G-LTE) and the signal icon changed from 4G to a smaller 4G with underscore LTE. But only the 3G and 2G APNs were found when searching networks manually.
I did rooted the device and removed the bloatware that came along using this xda-developers how-to.
Any idea how can I get 4G-LTE access on my device?
Thanks in advance,
gtludwig
Click to expand...
Click to collapse
I suspect your APN need modifying. Check the clerks APN settings against yours.

Your APN is set wrong. I'm not sure how to change it on the stock AT&T ROM though.

fire219 said:
Your APN is set wrong. I'm not sure how to change it on the stock AT&T ROM though.
Click to expand...
Click to collapse
It's in the settings/tethering and networks/mobile networks/access point names. I have consumer cellular, but it leases from ATT, so it has slightly different settings, though ATT APN will work ok.

JeffDC said:
It's in the settings/tethering and networks/mobile networks/access point names. I have consumer cellular, but it leases from ATT, so it has slightly different settings, though ATT APN will work ok.
Click to expand...
Click to collapse
I had thought that menu was just tethering settings. That's embarrassing. :S

SGH-T999 Stuck on Edge only

Hello there hope all of you doing well
i had Tmo SGH-T999 S3 which is unlocked but after unlocking its stuck on 2G Network i couldn't use 3g network
i search on google and i found this code :*#197328640#
but i don't know how to use it any way can you help me
wish best times 4 you ^_^

Did you sim-unlock the phone using a code?

I'm also having this issue. I have TMO SGH-T999 S3 sim unlocked before via software (not unlocked via code) and always stays on E (2G). I am thinking that i got messed up after the unlock. My IMEI is still intact btw.

First thing is to double check that your IMEI exactly matches the one on the sticker under the battery. If it checks out, the next best step is to reflash your current or newer stock firmware. (This can be caused by mismatched firmware so by flashing it you will either fix the problem or eliminate it as the cause).
You may also want to check your IMEI against the blacklists online. Especially if you bought it anywhere but a retail store.

Unlocking via code or secret menu should not affect radio bands available in the phone.

WCDMA Band preference
I've checked the WCDMA (3G) band preference available in my T999 S3 and below are the only option available:
The mode preference menu: *#2263#
The information menu: *#197328640#
WCDMA 850
WCDMA 900
WCDMA 1700
WCDMA 1900
WCDMA IMT2000
WCDMA ALL
... and found out my carrier band preference for 3G is 2100. Seems i'm out of luck for 3G data and since this T999 cannot support 4G LTE. I guess i'm stuck on E (2G) data unless i use WiFi.
P.S - Is there a way to add a 1800 or 2100 band preference to WCDMA? :fingers-crossed:

Check the General section in AT&Ts forum. They had something like this if I remember right. They could enable use on a different band, but I don't think it would stick after a reboot. It's been a long time since I looked at it though, so they may have made some more progress on it.

Goodbye 2G (E) data connection
I'm happy to report that my (WCDMA) data speeds is now functional on my SIM network carrier! :good: Loving the speed browsing at last . Although showing as 4G but i know my T999 is not capable of that and not very sure.
Again, thanks DocHoliday777 (I don't know how to link your name) for giving me the idea about the Modem mod. I just followed the guide on the link below and used the NV Data backup from T999L file. So for any users of T999 you can try this mod but please do it at your own risk and don't forget to backup.
I hope this T999L modem mod can be included on the newer root66 baseband/firmware so it can be permanent?
Anyway, just follow the guide on the link below and hit thanks!
http://http://forum.xda-developers.com/showthread.php?t=2344627
P.S - To access the modem setting on my SGH-T999 I've used the code *#0808#. And my final WCDMA setting i chose WCDMA ALL. Goodluck!

Use this phone on Cricket Wireless?

I'm currently using the AT&T H810 on Cricket Wireless and am wondering how to get the data to work with this Verizon variant. I can make calls when I put my Cricket SIM card in, but I get no data. Any ideas or anyone already get this working? Thanks!

Did you change the APN settings? Also, AT&T uses LTE bands: 2, 4, 5, and 17 primarily. The Verizon G4 doesn't have band 17. so you are not going to get very good coverage in buildings or at far distances from the tower.

geoff5093 said:
Did you change the APN settings? Also, AT&T uses LTE bands: 2, 4, 5, and 17 primarily. The Verizon G4 doesn't have band 17. so you are not going to get very good coverage in buildings or at far distances from the tower.
Click to expand...
Click to collapse
I didn't but I think cricket did it remotely when I put the SIM card in, how do I check? Also is it possible to unlock band 17? I've seen posts here and there talking about unlocking different bands on variants which don't have them unlocked by default. Thanks.

petermg said:
I didn't but I think cricket did it remotely when I put the SIM card in, how do I check? Also is it possible to unlock band 17? I've seen posts here and there talking about unlocking different bands on variants which don't have them unlocked by default. Thanks.
Click to expand...
Click to collapse
I know I had to put the APN settings in myself when using a T-Mobile SIM. I would Google "Cricket APN Settings" and then go to the settings on your phone (under more I believe), and edit the APN. You can't unlock band 17 unfortunately.

geoff5093 said:
I know I had to put the APN settings in myself when using a T-Mobile SIM. I would Google "Cricket APN Settings" and then go to the settings on your phone (under more I believe), and edit the APN. You can't unlock band 17 unfortunately.
Click to expand...
Click to collapse
Yeah, why can't we unlock band 17? I tried using a few methods listed where you write to the NV ITEMS and enable all kinds of bands, but it still didn't work. I only got LTE when I force it via a hidden menu setting, but then I couldn't make or receive any calls. I get HSPA and HSPA+ but that's it and there's a constant icon in the notification bar of a white sim card with a question mark on it...!?

petermg said:
Yeah, why can't we unlock band 17? I tried using a few methods listed where you write to the NV ITEMS and enable all kinds of bands, but it still didn't work. I only got LTE when I force it via a hidden menu setting, but then I couldn't make or receive any calls. I get HSPA and HSPA+ but that's it and there's a constant icon in the notification bar of a white sim card with a question mark on it...!?
Click to expand...
Click to collapse
Because the phone doesn't support it. You can't unlock bands that the phone doesn't have to begin with.
Sent from my Nexus 6P using Tapatalk

Is there anything special to get calls to work on Cricket ? Updated APN settings for data but calls still did work.

JeffATL said:
Is there anything special to get calls to work on Cricket ? Updated APN settings for data but calls still did work.
Click to expand...
Click to collapse
When I tested with my Cricket SIM card calls just worked. I didn't have to do anything. However as you mentioned I had to manually update the APN to get data working.

petermg said:
When I tested with my Cricket SIM card calls just worked. I didn't have to do anything. However as you mentioned I had to manually update the APN to get data working.
Click to expand...
Click to collapse
That is odd. I wonder if I met someone at a Cricket wireless there if techs would help getting it working.