Network Issue - AT&T Samsung Galaxy S II Skyrocket SGH-I727

I have a Samsung Galaxy Skyrocket SGH - I727. The device is rooted and work under Ice Cream Sandwich. The main issue is the phone recognize my network (TIGO from Colombia) and the phone shows me the network name and the APN setup, but it doesn't load the data neither H+, 3G or E. Sometimes when I reset APN default settings a couple of times, the phone shows for a couple of seconds the H+ icon on the top, Is any way that I can fix this! Because also the phone is unable to place calls or receive text messages, I only can access to the operator *services!
Thanks in advanced.

Have you tried manually entering the APN settings? Search them up on google.
This would be better suited in the Q&A section but I'll stop my flaming there.
Sent from my SAMSUNG-SGH-I727 using xda premium

U did unlock the phone correct? And what frequency does your carrier operate on, u may need a different radio ie. Regular GSM carriers use 850, 900, 950 etc. But your carrier may be AWS, which is 1700/2100, requiring the T-Mobile radio.

Related

[2G/3G/3.5G] Preferred Network Types Explained & How To Change It Easily

I'm noticing most of us are on the AT&T Network, yet there are those that do not want or need 3G/3.5G and want to use 2G or have another carrier so they cant take advantage of the speeds because they are on a Network such as T-Mobile.
Obviously someone using primarily or mainly 2G will see significantly more battery life.
This is good for someone that rarely uses data service or goes online using WIFI for the most part.
To change or edit your Preferred Network type go to your Phone app
then enter the following: *#*#4636#*#*
>Phone Information
>Set Preferred Network Type
Now you are able to change and edit the way your phone looks for and uses the Network you are currently on.
The Terms are explained below:
Preferred Network Types change the type of frequency the phone searches for.
Android is used on several devices that can gain access to different cell carriers.
For simplicity, there are two main types of cell carriers, GSM and CDMA.
The following popular data communication technology is associated with each cell carrier type:
GSM = GPRS (2g), EDGE(2g), UMTS(3g), WCDMA(3g), HSDPA(3g) {Cell Carrier examples: AT&T and T-Mobile}
CDMA = CDMA*(2/3g) EV-DO(3g) WiMax(3/4g) {Cell Carrier examples: Verizon and Sprint}
Now that the general stuff is out of the way, here's my take on the Preferred Network types:
WCDMA preferred - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 3G is favored more.
GSM only - The GSM phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
WCDMA only - The GSM phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
GSM auto (PRL) - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more. This one is a bit confusing to me since PRL is associated mostly with CDMA technology and not GSM technology.
CDMA auto (PRL) - The CDMA phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more.
CDMA only - The CDMA phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
EvDo only - The CDMA phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
GSM/CDMA auto (PRL) - Some phones are equipped with both GSM and CDMA capabilities. This setting appears to just have the phone attempt to stay connected to the data communication type that works the best.
Unknown - If none of the above fit or the phone is acting weird as far as connecting to the carrier, you will see your preferred network type is set to this
When using the 'only' options you should still be able to make calls.
To put things into perspective, The Nexus One is set to WCDMA preferred as default and the Droid Incredible is set to CDMA auto (PRL).
My Samsun S does not recognise my sim.The sim works in another phone. I tried to change the preferred networkto CDMA preferred, as it is on "unknown". It does not allow me to change it. Please help, as this new phone is now doorstopper.
Azizj said:
My Samsun S does not recognise my sim.The sim works in another phone. I tried to change the preferred networkto CDMA preferred, as it is on "unknown". It does not allow me to change it. Please help, as this new phone is now doorstopper.
Click to expand...
Click to collapse
Go to your devices section, seriously...
Sent from Team Pirate! Using Tapatalk 2
legend221 said:
I'm noticing most of us are on the AT&T Network, yet there are those that do not want or need 3G/3.5G and want to use 2G or have another carrier so they cant take advantage of the speeds because they are on a Network such as T-Mobile.
Obviously someone using primarily or mainly 2G will see significantly more battery life.
This is good for someone that rarely uses data service or goes online using WIFI for the most part.
To change or edit your Preferred Network type go to your Phone app
then enter the following: *#*#4636#*#*
>Phone Information
>Set Preferred Network Type
Now you are able to change and edit the way your phone looks for and uses the Network you are currently on.
The Terms are explained below:
Preferred Network Types change the type of frequency the phone searches for.
Android is used on several devices that can gain access to different cell carriers.
For simplicity, there are two main types of cell carriers, GSM and CDMA.
The following popular data communication technology is associated with each cell carrier type:
GSM = GPRS (2g), EDGE(2g), UMTS(3g), WCDMA(3g), HSDPA(3g) {Cell Carrier examples: AT&T and T-Mobile}
CDMA = CDMA*(2/3g) EV-DO(3g) WiMax(3/4g) {Cell Carrier examples: Verizon and Sprint}
Now that the general stuff is out of the way, here's my take on the Preferred Network types:
WCDMA preferred - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 3G is favored more.
GSM only - The GSM phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
WCDMA only - The GSM phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
GSM auto (PRL) - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more. This one is a bit confusing to me since PRL is associated mostly with CDMA technology and not GSM technology.
CDMA auto (PRL) - The CDMA phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more.
CDMA only - The CDMA phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
EvDo only - The CDMA phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
GSM/CDMA auto (PRL) - Some phones are equipped with both GSM and CDMA capabilities. This setting appears to just have the phone attempt to stay connected to the data communication type that works the best.
Unknown - If none of the above fit or the phone is acting weird as far as connecting to the carrier, you will see your preferred network type is set to this
When using the 'only' options you should still be able to make calls.
To put things into perspective, The Nexus One is set to WCDMA preferred as default and the Droid Incredible is set to CDMA auto (PRL).
Click to expand...
Click to collapse
This option has not worked on any Sense ROM I have tried for the HTC Inspire. It works great on CM7 but does nothing but stay on 3G on sense.
For sense Rom if you are rooted this is how you do it
From today screen
1. Hit menu
2. Click settings
3. Click wireless and networks
4. Scroll down to mobile networks
5. Choose network mode
6. Change to gsm
This will lock you into edge only. Even after reboot settings will stay phone must be rooted or it does not hold settings
If you want 3g/4g only. Set tab to wcdma only
I am running coredroid 9.4
Sent from my Inspire 4G using xda app-developers app
insanenyc said:
For sense Rom if you are rooted this is how you do it
From today screen
1. Hit menu
2. Click settings
3. Click wireless and networks
4. Scroll down to mobile networks
5. Choose network mode
6. Change to gsm
This will lock you into edge only even after reboot settings will stay phone must be rooted or it does not hold settings
If you want 3g/4g only set tab to wcdma only
I am running coredroid 9.4
Sent from my Inspire 4G using xda app-developers app
Click to expand...
Click to collapse
I have tried this on CoreDroid and ARHD and no luck. Went through settings menu and used the *#*#4636#*#* options and neither one sticks. Could it be my radio and hboot and the interface with Sense?
EDIT: Going to try ARHD again and see. If not, I will try CoreDroid.
EDIT: Still a no go for either ROM...ClearDroid included. So far, I have only been able to do this via either method (plus a built in toggle) via CM7. This begs the question of whether this is a software issue with HTC Sense.
Strange I remember when I was on stock sense Rom the settings wouldn't stick. But as soon as I rooted and downloaded a custom Rom it did stick sorry you are having trouble. Here is my complete rom/radio/kernal
Coredroid 9.4 = Rom
12.56.60.25u_26.10.04.03m=radio
Lordmod 5.0 is the kernal
I also changed my build.prop settings to enable real 4g and tweaked gsm gprs umits huspa hsdpa I do not know if this had any effect on making settings stick
Sent from my Inspire 4G using xda app-developers app
Build.prop tweaks
insanenyc said:
Strange I remember when I was on stock sense Rom the settings wouldn't stick. But as soon as I rooted and downloaded a custom Rom it did stick sorry you are having trouble. Here is my complete rom/radio/kernal
Coredroid 9.4 = Rom
12.56.60.25u_26.10.04.03m=radio
Lordmod 5.0 is the kernal
I also changed my build.prop settings to enable real 4g and tweaked gsm gprs umits huspa hsdpa I do not know if this had any effect on making settings stick
Click to expand...
Click to collapse
Thank you for the feedback. I am running the same radio. I will revisit CoreDroid again. Perhaps editing the build prop is the way to go in this case. It is the one thing I have not tried on any of the ROMs for this phone other than to rename my phone from Desire HD to Inspire (which was only on one or two ROMS). Would you mind sharing your build.prop settings and tweaks so that I can have a baseline to work with? I'll tweak from there as necessary to meet my wants.
I edited only these in build.prop
ro.ril.gprsclass=10
ro.ril.hsdpa.category=28
ro.ril.hsupa.category=7
ro.ril.hsxpa=2
Reboot twice and don't forget to backup your settings
I used prop editor to edit build.prop its easier but I don't have a link for it but I think there is a link in that thread I posted below
All info can be found here
http://forum.xda-developers.com/showthread.php?t=982082
Sent from my Inspire 4G using xda app-developers app
Give build.prop change a try
insanenyc said:
I edited only these in build.prop
ro.ril.gprsclass=10
ro.ril.hsdpa.category=28
ro.ril.hsupa.category=7
ro.ril.hsxpa=2
Reboot twice and don't forget to backup your settings
I used prop editor to edit build.prop its easier but I don't have a link for it but I think there is a link in that thread I posted below
All info can be found here
http://forum.xda-developers.com/showthread.php?t=982082
Sent from my Inspire 4G using xda app-developers app
Click to expand...
Click to collapse
Thanks. I will give this a shot. I have edited the build.prop before but only for the purpose of changing device id name. I don't remember what I used to edit it but I am sure I can find it again. No worries about the backups. I kept copies of original build.prop saved plus did a nandroid right before making the changes. Never can be too careful. Will post results later tonight on whether this was success or not for locking in the ability to switch between bands.
In that thread I posted is the build.prop app 8th or 9th post down. That tweak is just for faster data speeds and I do not think it will lock u on to 2 g or 3g but who knows
Sent from my Inspire 4G using xda app-developers app
insanenyc said:
In that thread I posted is the build.prop app 8th or 9th post down. That tweak is just for faster data speeds and I do not think it will lock u on to 2 g or 3g but who knows
Sent from my Inspire 4G using xda app-developers app
Click to expand...
Click to collapse
No go for 2g/3g options. Have not been able to really say about faster data speeds but definitely something I will keep notes on. Back to where I started. Looks like CM will remain my ROM of choice for now.
Preferred network type set to unknown
Hi frnds.. i had accidently set preferred network type to unknown by going in secret setting by using the code *#*#4636#*#* in my Micromax A54 and now my real imei number is changed into 00000000. My mobile is not recognizing any sim and on notification bar it says ''searching for service''. I am not able to reset previous setting i.e. unknown to gsm auto(prl) or gsm only or wcdma only. Please help me how can i resolve my problem.
Your help will be appreciated. thnx in advance..
hi i have samsung note2 my network show unknow but every thing is ok call sms is fine how to i fix it to my network when i restart it they show gprs but when i call some one they going to unknow
Turns out the device has two SIM card slots - one strictly for GSM, another with WCDMA support. If this is the same for you, change SIMcard slot and the preferred network type will change
legend221 said:
I'm noticing most of us are on the AT&T Network, yet there are those that do not want or need 3G/3.5G and want to use 2G or have another carrier so they cant take advantage of the speeds because they are on a Network such as T-Mobile.
Obviously someone using primarily or mainly 2G will see significantly more battery life.
This is good for someone that rarely uses data service or goes online using WIFI for the most part.
To change or edit your Preferred Network type go to your Phone app
then enter the following: *#*#4636#*#*
>Phone Information
>Set Preferred Network Type
Now you are able to change and edit the way your phone looks for and uses the Network you are currently on.
The Terms are explained below:
Preferred Network Types change the type of frequency the phone searches for.
Android is used on several devices that can gain access to different cell carriers.
For simplicity, there are two main types of cell carriers, GSM and CDMA.
The following popular data communication technology is associated with each cell carrier type:
GSM = GPRS (2g), EDGE(2g), UMTS(3g), WCDMA(3g), HSDPA(3g) {Cell Carrier examples: AT&T and T-Mobile}
CDMA = CDMA*(2/3g) EV-DO(3g) WiMax(3/4g) {Cell Carrier examples: Verizon and Sprint}
Now that the general stuff is out of the way, here's my take on the Preferred Network types:
WCDMA preferred - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 3G is favored more.
GSM only - The GSM phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
WCDMA only - The GSM phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
GSM auto (PRL) - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more. This one is a bit confusing to me since PRL is associated mostly with CDMA technology and not GSM technology.
CDMA auto (PRL) - The CDMA phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more.
CDMA only - The CDMA phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
EvDo only - The CDMA phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
GSM/CDMA auto (PRL) - Some phones are equipped with both GSM and CDMA capabilities. This setting appears to just have the phone attempt to stay connected to the data communication type that works the best.
Unknown - If none of the above fit or the phone is acting weird as far as connecting to the carrier, you will see your preferred network type is set to this
When using the 'only' options you should still be able to make calls.
To put things into perspective, The Nexus One is set to WCDMA preferred as default and the Droid Incredible is set to CDMA auto (PRL).
Click to expand...
Click to collapse
Hi, here's a tutorial on how to change network modes using AT commands: http://www.josemauricio.net/?p=486
When i try to change my network it automatic changes to wcdma preferred.
When i try to change my network it automatic changes to wcdma preferred

[Q] How do I prevent Samsung Galaxy S 4G from connecting to AT&T?

I have Samsung Galaxy S 4G with T-Mobile in San Francisco.
Whenever I go to an area without T-Mobile signal, the phone connects to AT&T. I called T-Mobile and they said that's because T-Mobile has roaming agreement with AT&T so my phone would connect.
The problem is, when my phone connects to AT&T, I can't make any calls. It says the phone's not registered. T-mobile says that's because I'm in an area that has T-Mobile coverage.
You'd think that the phone would be smart enough to figure out that only emergency calls can be made (which is what BlackBerry does and shows SOS sign). The real problem for me is that, I have WiFi calling enabled with cellular preference, and when I'm in the basement of my office building where there is no T-Mobile signal (but there is WiFi signal), my phone thinks it has cellular signal so it doesn't activate WiFi calling, yet no phone calls are coming in b/c it's not registered to AT&T's cellular network.
Is there a way for me to force my phone to only connect to T-Mobile? I know there isn't on the regular settings menu, but perhaps experts could tell me how to do so using those star-sharp keys listed here (http://forum.xda-developers.com/showthread.php?t=842134)?
Thank you!
Set wifi preferred instead of cellular.
Sent from my SGH-T959V using XDA App
Unfortunately, that doesn't work for me because I move around a lot, and Android WiFi calling feature doesn't have handover.
There's got to be a way to prevent this phone from connecting to AT&T at a low level somehow, no?
How do I do that? Have checked the manual but can't find location where explains how to select wi-fi preferred instead of cellular. Your kind advise will be appreciated
Open WiFi Calling and select settings. You'll see Preference. Select Cellular Preferred.
I think in setting then wireless and network, then mobile networks then network operators click the default settings.... select manual and wait for the carrier to pop up.
Will this solve your problem?
Sent from my SGH-T959V using XDA App
scoop_dtx said:
I think in setting then wireless and network, then mobile networks then network operators click the default settings.... select manual and wait for the carrier to pop up.
Will this solve your problem?
Sent from my SGH-T959V using XDA App
Click to expand...
Click to collapse
yep manual is exactly what OP should do.
if the settings for network operators are set to manual then u select the network u want and it sticks unless u manually select a different network provider. u are in select automatically mode so the phone can switch all on its own. this should solve your problem as other people have already mentioned
I have tried this many times and works as long you don't turn the phone off. After I forced the phone to manually select T-Mobile I checked many times the default setting and it remained in manual until the phone was turned off. When I switched it back on it was again in automatic mode and switching to ATT when signal is low.
Is there a way to prevent this? If not, well , first thing when phone is on in the morning is to check default setting.
5/24 I finally gave up and sold the phone. Samsung says they have not received any claims regarding this issue eventhough you see it frequently in the forums. I returned back to my HTC HD2 and will wait for the G2.

lock your infuse to cdma

Dial *#*#4636#*#* go into phone information scroll down and choose wcdma only and your done default is GSM/WCDMA auto (PRL)
samsungcaptivates said:
Dial *#*#4636#*#* go into phone information scroll down and choose wcdma only and your done default is GSM/WCDMA auto (PRL)
Click to expand...
Click to collapse
please excuse my ignorance, but what would be the purpose of this?
so that it dosent jump around from 3g 2g if its auto and your not using data it automatically defaults to 2g i think to save battery then switches to 3g oir hsdpa 3.5g or what att calls 4g on demand this keeps it locked on wcdma or 4g to my knowledge
samsungcaptivates said:
so that it dosent jump around from 3g 2g if its auto and your not using data it automatically defaults to 2g i think to save battery then switches to 3g oir hsdpa 3.5g or what att calls 4g on demand this keeps it locked on wcdma or 4g to my knowledge
Click to expand...
Click to collapse
seems like it reverts back to auto after a reboot
This makes the phone work on Verizon, right?
MikeyMike01 said:
This makes the phone work on Verizon, right?
Click to expand...
Click to collapse
See that's what I thought too. ATT = GSM, Verizon/Sprint = CDMA.
kwaalude said:
seems like it reverts back to auto after a reboot
Click to expand...
Click to collapse
Mine goes back to auto as soon as I back out of the menu. Am I doing something wrong by using the back button?
wouldn't this, by locking it, render the phone useless when traveling out of area that support that network?
MikeyMike01 said:
This makes the phone work on Verizon, right?
Click to expand...
Click to collapse
roflmao 10char
vbanh said:
Mine goes back to auto as soon as I back out of the menu. Am I doing something wrong by using the back button?
Click to expand...
Click to collapse
Mine does the same thing. did you figure out how to do it? I have been trying but I couldn't do it
I found this here in the forum someone posted and it worked for me thanks for him.
champoux said:
Here's an alternate method I puzzled out (and then afterward discovered it was already posted in thread 751237. It's a bit faster and has the advantage of surviving flight mode; still gets reset upon restart.
Dial *#*#2263#*#* (mnemonic: *#*#BAND#*#*).
This brings up the Band selection menu which you can also access from the above method by dialing *#*#197328640#*#* then going into DEBUG SCREEN > PHONE CONTROL > NETWORK CONTROL.
Select [3] GSM BAND
Select [1] GSM ALL
Select "Select GSM All Bands"
Menu key > END
To switch back, go to *#*#2263#*#* and select [1] AUTOMATIC > Select GSM &WCDMA All Bands > Menu key > END.
Something else I'm trying out is switching the acquisition order so when it is in "dual" mode, it'll try GSM first. Even so, it will still switch to 3g if there's enough signal. Seems to help keep it on 2G though, when it would otherwise cling to a faint 3g signal with 0-1 bars.
To do that, go into the NETWORK CONTROL menu (see above) then
Select [4] AQUISITION ORDER (yes they misspelled it)
Select [2] GSM->UMTS
Select "Select ACQ_ORDER_GSM_FIRST" (at least they abbreviated it correctly)
Menu key > END
This option does not get reset upon phone restart.
Click to expand...
Click to collapse
I did this and now my sms or text messaging don't work help
I had this happen too, but I didn't use the above method. Don't know what happened, but when I checked message settings, I had no number under "Message Center" did a quick google search and found an ATT number "+13123149810"...now it works again.
Did u call the number
Never mind i fixed it.but now in my network type it says umts is that faster then hsdpa and are there any other number sequences i can use to tweak my phone
I'm getting RAT restricted, which I got on my Vibrant but never my Captivate...
How can I change to show the different bands?
Sent from my Samsung Infuse 4G
wcdma and cdma have nothing to do with each other. wcdma is also known as umts, the base part of 3g (and 4g when hspa+). hspa is a protocol that runs on top of this cell technology providing higher data speeds. gprs (known as edge, and some times called gsm) is 2g. you can turn one or another off so the phone does not seek and connect to both services, which could save battery life. even though ive yet to see my phone find less than 3g/4g in houston, i still dont turn it off, just in case.
The Jack of Clubs said:
wcdma and cdma have nothing to do with each other. wcdma is also known as umts, the base part of 3g (and 4g when hspa+). hspa is a protocol that runs on top of this cell technology providing higher data speeds. gprs (known as edge, and some times called gsm) is 2g. you can turn one or another off so the phone does not seek and connect to both services, which could save battery life. even though ive yet to see my phone find less than 3g/4g in houston, i still dont turn it off, just in case.
Click to expand...
Click to collapse
Thanks, John Madden.

How to Fix AT&T Data Throttle Your 4G - Your Data Usage is Among The Top 5% Of Users

How to Fix AT&T Data Throttle Your 4G - Your Data Usage is Among The Top 5% Of Users
There is a nice little APN fix. Just change the APN to Phone and force your phone to use HSPA in your phone's settings. I have instructions with a screenshot...
http://www.traemcneely.com/2011/12/...rottle-4g-data-anti-throttling-trick-for-att/
How do you perform the first step on the skyrocket?
1. Go to Settings > Wireless and Network > Mobile Networks > Click Network Mode and force your phone to use GSM/HSPA (Auto mode).
I don't see "network mode".
Click Access Point Name..
I am now getting 512k vs 150k.
Sent from my SAMSUNG-SGH-I727 using Tapatalk
Found another trick.
I named the access point the same ATT pta, then I put Phone under the APN setting.
Put your phone into GSM/HSPA (auto mode) let it connect to the network,
then go back and put it as HSPA only.....I'm getting 1-2g+ bypassing the throttle using HSPA+ works like a charm.
Att Throttle Samsung Skyrocket
i did all when i click on Mobile networks i see access point names and network operators and use packet data. When i click on network operators is says Default setup doesnt allow me to do anything. Please help
Same here. Don't see 'network.mode' selection. Please help. Does it have to be rooted?
Sent from my SAMSUNG-SGH-I727 using XDA App
I understand there are alot of threds pertaing to this throttling issue. I was given a warning text from att about a week ago now when ever i run my speed test i am only getting around 50kbs thats crazy. I live in pittsburgh which is not an LTE area yet am i screwed? or is there a work around for me????????
there is no network mode on a stock rom.. i posted workarounds on another thread which I started but can't find link now on my phone.. check my profile for my posts
Sent from my SAMSUNG-SGH-I727 using xda premium
*#*#4635#*#*
ajdrausal said:
*#*#4635#*#*
Click to expand...
Click to collapse
*#*#4636#*#*
---------- Post added at 11:36 PM ---------- Previous post was at 11:17 PM ----------
I am still not sure where/how to pick "GSM/HSPA (Auto mode)" on stock rom. Thats not an option.
What I have are:
WCDMA preferred - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 3G is favored more.
GSM only - The GSM phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
WCDMA only - The GSM phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
GSM auto (PRL) - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more. This one is a bit confusing to me since PRL is associated mostly with CDMA technology and not GSM technology.
CDMA auto (PRL) - The CDMA phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more.
CDMA only - The CDMA phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
EvDo only - The CDMA phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
GSM/CDMA auto (PRL) - Some phones are equipped with both GSM and CDMA capabilities. This setting appears to just have the phone attempt to stay connected to the data communication type that works the best. (Maybe the Samsung Galaxy S will take advantage of this???)
Unknown - If none of the above fit or the phone is acting weird as far as connecting to the carrier, you will see your preferred network type is set to this
(Cut n paste from another thread, dont know if these are applicable to Skyrocket/LTE)
http://forum.xda-developers.com/showthread.php?t=1342111
Thanks for the pointer to the thread but my whole point is that I dont see those options and for some reason my network mode changes dont stick.
So if I disable packet network, switch the APN, change the network mode and then enable the network again, I see that it has gone back to GSM?WCDMA/LTE auto mode again.
So for some reason my network mode changes dont stick. Also, I am on stock rom, could that be the reason!
activemind said:
Thanks for the pointer to the thread but my whole point is that I dont see those options and for some reason my network mode changes dont stick.
So if I disable packet network, switch the APN, change the network mode and then enable the network again, I see that it has gone back to GSM?WCDMA/LTE auto mode again.
So for some reason my network mode changes dont stick. Also, I am on stock rom, could that be the reason!
Click to expand...
Click to collapse
Custom ROMS give you the options you are looking for.
I am confused ! If the stock radio is *locked* to use LTE if available, why are some people reporting to lock onto HSPA+ network with stock ROM. Are they exploiting some bug?
I have tried various things but I cant switch my radio to anything except GSM/WCDMA/LTE auto mode. It seems to come back to that mode.
Do I need a reboot after changing the mode.
I am using *#*4636#*#* to switch the mode.
Switching APN 's worked like a charm ;o)
TE TOQUE said:
Switching APN 's worked like a charm ;o)
Click to expand...
Click to collapse
Over a year since last post and you decide to necro for no good reason smh.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

[Q] How to enable LTE by updating PRL settings, using a Rogers LTE s2 on Fido LTE?

I just purchased a used Galaxy S2 SGH-I727R skyrocket that was originally purchased from Rogers in Canada a year ago by the original owner. The phone was completely stock with stock Rogers firmware, most up to date version 4.0.4. The phone box shows LTE DUAL BAND 700MHz/AWS as the capable signal bands on this phone. I'm not sure if any of these are blocked on the Rogers custom firmware.
I unlocked the phone and tried to use it on Fido LTE network, which works on the same network as Rogers as it is part of the same parent company now. However, my phone will not pick up the LTE signal, no matter what. The SIM is brand new from Fido on their new LTE network that I got just 2 weeks ago. The SIM is properly provisioned for LTE as after installing sim in the phone, the apn settings window automatically populates with FIDO LTE settings (ltemobile.apn and ltedata.apn for tethering). I also have a full LTE and 4g data plan.
As LTE would not connect, I entered fido's regular 4g/3g settings as a separate apn and the phone connected right away to the 4G network (with very good speeds, DL up to 11MBps and uploads up to 2-3 MBps). I'm in the downtown Mississauga area right beside toronto and this area is fully covered with LTE. I tried using the 'data roaming' option to see if there was any difference, I tried to manually select fido in the 'network operators' section etc but playing around with these options generated zero success.
I looked up forums on Fido where even though this phone is not in their line up of supported devices, their helpdesk suggested that any Canadian LTE phone with proper fido lte data plan and proper lte sim should work on LTE. I even drove around in areas near my house where I've seen a friend use Fido's LTE signal on his Fido htc one device, but no success on my phone.
***Some people have activated proper LTE signal on their Google Nexus 4 American phones for use in Canada by dialing *#*#4636#*#* and then going into the following menu's 'phone information' section to select LTE or a different PRL option with LTE. I tried to do the same thing but when I enter this hidden menu's 'phone information' section, my screen blanks out, phone becomes unresponsive and after a minute or 2 I get a message that some android system file was closed etc. I tried de-activating the data connection and tried to enter the same menu option but same end result. I thought maybe rooting the phone will give me access to this menu but even after successful root, my phone blanks out when entering that 'phone information' menu.
Can anyone suggest something or help me figure this out please. I have a feeling the PRL or LTE option needs to be selected manually here and I need to access that menu. Since FIDO LTE network on Rogers existing LTE network was activated a year later, there may be some updates needed in this area (as the phone was originally set up for Rogers LTE from a year ago).
OR, should I just call FIDO support, and assuming they help me with a non-fido phone, try to get this sorted out with their techs?
Thanks
weird when you say the box says "aws", rogers doesnt support aws as far as i know, wind uses aws, i cant find my box to check
did you perferm a factory reset, which modem are you on
EDIT: phone does support aws, but cant see why it would state it on the box if its from rogers
Because the LTE networks are running on AWS and in some cases 2600 MHz frequencies by the big providers in Canada. Even thourgh only Wind/mobilicity use the new AWS for their regular 3G/4G networks, the LTE with Rogers/Bell/Telus is on AWS while their regular non-lte signals are still on their standard gsm bands.
joekidd said:
Because the LTE networks are running on AWS and in some cases 2600 MHz frequencies by the big providers in Canada. Even thourgh only Wind/mobilicity use the new AWS for their regular 3G/4G networks, the LTE with Rogers/Bell/Telus is on AWS while their regular non-lte signals are still on their standard gsm bands.
Click to expand...
Click to collapse
k, but did you check which modem you are on
did you perform a reset.
u stated you entered this, *#*#4636#*#* you should of not received errors(but i tested on jb)
try this for band preference *#2263#
try a working rogers lte sim card and see what happens
are the fido apns the same as rogers
try the rogers apns, used to work for the 3g when i was on fido but that was b4 they offered lte
last resort but maybe your best option, flash stock w/odin, howto in my sig
vincom said:
k, but did you check which modem you are on
did you perform a reset.
u stated you entered this, *#*#4636#*#* you should of not received errors(but i tested on jb)
try this for band preference *#2263#
try a working rogers lte sim card and see what happens
are the fido apns the same as rogers
try the rogers apns, used to work for the 3g when i was on fido but that was b4 they offered lte
last resort but maybe your best option, flash stock w/odin, howto in my sig
Click to expand...
Click to collapse
which radio or modem should one be on for lte
and tether
rts91 said:
which radio or modem should one be on for lte
and tether
Click to expand...
Click to collapse
rogers or att modems
vincom said:
k, but did you check which modem you are on
did you perform a reset.
u stated you entered this, *#*#4636#*#* you should of not received errors(but i tested on jb)
try this for band preference *#2263#
try a working rogers lte sim card and see what happens
are the fido apns the same as rogers
try the rogers apns, used to work for the 3g when i was on fido but that was b4 they offered lte
last resort but maybe your best option, flash stock w/odin, howto in my sig
Click to expand...
Click to collapse
Thanks again for your help. I realized later on that I got the non-LTE sim card from Fido, so I went back yesterday and got an LTE sim card and had it activated. However, I can never get LTE even though a person sitting beside me on her Rogers S3 with the exact same apn (as I realized rogers and Fido have the exact apn's for LTE network, ltemobile.apn) is getting LTE. I know Fido is the value brand, so they get secondary priority on LTE, which is ok but I realized the problem below:
WHEN I had the non-LTE sim and even with the LTE sim now, one option has never worked. In the mobile network screen, I'm supposed to have just the Ltemobile.apn (Fido and Rogers LTE) radion button selected and Ltedata.apn (for tether) as the default options. These are also built into the rogers stock rom and this phone is originally a rogers a phone. My friend's S3 has the same 2 apn's listed while she's connected to rogers LTE (her's is micro sim, I couldn't try it on mine). With these options, I CAN'T connect to ANY data network at all. I can only do calls, no data. I tried doing batter reset, restarts, change the LTE/HSPA and HSPA etc settings, no luck. The ONLY time I get data is when I manually enter the non-LTE apn settings as a separate apn (Fido-core-appl1.apn) and it connects to 4G. The speeds were good earlier but since changing to the LTE sim, the same 4G keeps disconnecting or it gives much much lower speeds.
As per your suggestion, I followed your thread to re-install the stock rogers ICS rom with odin. Even after that, no change at all. I tried using the *#2263# option to change LTE band to 7 or auto, but no luck as this phone's hardware is only for 700 MHZ or AWS, of which rogers uses the 2100 on pretty much all their devices. At this point, I don't know what to do. I've followed everything from Fido site with LTE phone, LTE apn, LTE sim and LTE data plan, but the phone doesn't even recognize the ltemobile.apn unless I enter the regular Fido apn.
Should I change the radio/modem on this phone to something else or try the JB roms? Do you think that may make a difference, or is this something else, where LTE apn is not even recognized for data. Someone please help, my first phone upgrade after 2.5 yrs has been a complete buzz kill lol.
theres is a method when using *#2263# in picking the lte settings, ill search for the posts as i cant remember the exact details
if you lived or work near me i could test it out for you, bolton or toronto near yorkdale, since its a second hand phone you cant rule out hw failure, but you would need to test it out with a rogers lte sim card.
did you try manually searching for available networks from mobile settings
edit:k i found it, its old and uses the rogers older apn, try with that one or whatever fido phones uses now which i think would be the "ltemobile" apn, if already set then just goto the "power off" phone part
-.go to settings/more/mobile networks/access point names
Now click bottom left haptic button followed by Add apn
now either copy exactly what comes up in your apn Again and hit save
APN: rogers-core-appl1.apn
Proxy:
Port:
Username:
Password:
Server:
MMSC: http://mms.gprs.rogers.com
MMS Proxy: 10.128.1.69
MMS Port: 80
MCC: 302 (retrieved from SIM)
MNC: 720 (retrieved from SIM).
Authentication type:
APN type: > either not set to lte
Click bottom left haptic button and click save
and select it
then power off phone and remove sim card
then reboot phone (no sim card)
and when up go to phone and dial *#2263#
Select Lte Settings
All bands
then bottom left haptic button / end
Open dialer again.
Dial *#2263#
select automatic
Right bottom feedback button/end
power down
now place sim back in phone
reboot
make sure apn is selected you created
Thanks Vincom. If there is a HW problem, that would really suck but it's hard to see that would be the case if everything else is working fine, inlcluding 4G. And it would be great to know how that band selection process works, as I don't wont to select the wrong option and be stuck with a non-working radio.
I'll give Fido tech support a call and see if they can figure this out, but it's unlikely unless there is something wrong with my plan (LTE plan not activated, unlikely).
Let's say even if I were to have to check the phone (driving to Yorkdale area is no big deal), what would you test on this anyway?
Thanks
Actually let me try out the options you later added in your post above
Thank you, it worked!
vincom said:
theres is a method when using *#2263# in picking the lte settings, ill search for the posts as i cant remember the exact details
if you lived or work near me i could test it out for you, bolton or toronto near yorkdale, since its a second hand phone you cant rule out hw failure, but you would need to test it out with a rogers lte sim card.
did you try manually searching for available networks from mobile settings
edit:k i found it, its old and uses the rogers older apn, try with that one or whatever fido phones uses now which i think would be the "ltemobile" apn, if already set then just goto the "power off" phone part
-.go to settings/more/mobile networks/access point names
Now click bottom left haptic button followed by Add apn
now either copy exactly what comes up in your apn Again and hit save
APN: rogers-core-appl1.apn
Proxy:
Port:
Username:
Password:
Server:
MMSC: http://mms.gprs.rogers.com
MMS Proxy: 10.128.1.69
MMS Port: 80
MCC: 302 (retrieved from SIM)
MNC: 720 (retrieved from SIM).
Authentication type:
APN type: > either not set to lte
Click bottom left haptic button and click save
and select it
then power off phone and remove sim card
then reboot phone (no sim card)
and when up go to phone and dial *#2263#
Select Lte Settings
All bands
then bottom left haptic button / end
Open dialer again.
Dial *#2263#
select automatic
Right bottom feedback button/end
power down
now place sim back in phone
reboot
make sure apn is selected you created
Click to expand...
Click to collapse
Thank you x 1,000,000 Sir, I owe you big time. I've spent last 3 days non-stop on this phone while my wife has been complaining I haven't left my phone since I got it. Now I can go home today and spend more time with her lol.
Here's how it worked: I just copied the ltemobile.apn default settings into a new apn, which I saved with a different name (so that I could keep the original default settings saved separately). As soon as I saved the new apn settings (did not enter anything in the 'apn type' field) and wala, LTE came on. For some reason, even with the same settings exact default settings, it wasn't recognizing the saved apn but the newly created one was picked up right away. Tried the speed test in square one area at work, 21Mbps down, 12Mbps up, wow (coming from my old 3G phone, this is amazing).
I didn't even have to go through the rest of the process with band selection etc., as this is a Rogers phone on their network, so those settings should'nt be changed anyway.
Thanks again. I think I saw some posts on fido forums with other people complaining about stuck with 4G on non-fido phones. I'll update those forums as well.
Happy new year to all
I just make a new son ltemobile.apn and it sticks even on reboots
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