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WCDMA preferred vs GSM AUTO PRL

Had to hear it from the horses mouth, I called up HTC's tech support. I asked what was the difference between WCDMA preferred and GSM AUTO PRL. The gentleman I spoke to told me that they both have lots in common and that the only difference is that WCDMA preferred will favor 3G and GSM AUTO PRL will favor EDGE.
He continued to tell me that WCDMA preferred needs to reach a low threshold to go straight into 3g from edge. GSM AUTO PRL has a higher threshold, or higher standard has to be met (db of 3g signal) before it will go into 3G.
He mentioned that gsm auto prl will save the user a bit more power because it wont force the phone to continuasly hunt for a stronger signal. Typically this option gives our n1's a weaker signal and slower data speed. But he said it depends on our network in our city.
I also verified this information with t-mobiles tech support. They were a bit vague though. But they did mention that WCDA preferred will prefer 3g and that gsm auto prl is its complete opposite and will only prefer 3g if the signal is strong enough.
What do you guys think? Does this make sense?!?

Got this
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
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
from here, http://www.google.ie/support/forum/p/android/thread?tid=6a327a95211ac789&hl=en

sheek360 said:
Got this
from here, http://www.google.ie/support/forum/p/android/thread?tid=6a327a95211ac789&hl=en
Click to expand...
Click to collapse
I guess from this we can conclude that we will get a stronger signal and faster data using wcdma preferred, if we live in an area with horrible service. Seems like the guys with excellent service wont be affected one way or the other.
right?

just conducted a test. I get no service inside of my sons school with my n1. i put my n1 on gsm auto prl and i left my sons n1 on wcdma preferred. we both walked in the school till we lost service. as soon as we walked out i was on full bars of edge. my son was on 1 bar of 3g. i wanted to repeat the test over and over again but my wife gave me "that" look. BTW my daughters moto cliq had full bars of 3g inside the school and outside the school.
kids are 8 and 10, they have never brought home a B. straight a's and always on the honor roll. they wanted android phones, my 10 year old chose the n1 and my daughter picked the cliq. wife has a bb till the mytouch slide is released! android family that roots together stays together lol

here is a really good explanation about the gsm auto (prl) setting from another forum. i'll quote and also link it.
Originally Posted by icebike
What that does Roger, is tells your phone to connect using EDGE, and obtain a Preferred Roaming List (PRL) from the tower, and THEN switch to 3G when a data channel is required (which in the N1, is pretty much always because people are checking mail etc all the time).
WCDMA preferred has the phone try to find 3G directly. This takes more power until a connection is established.
You can verify this in the 4636 display, below the Run Ping Test button. You will see the Network Type say EDGE, then, after a bit, it will switch to HSPDA.
If your phone is near your computer speakers, you will hear edge chatter as it obtains its Preferred Roaming List. You may periodically hear a lot of EDGE chatter if you have nothing requiring a data channel running, because it might drop to edge and stay there for unexplained reasons.
Depending on your towers and service availability, you may see no difference in this at all. I live in a strong 3G area, and this does not help me at all. In fringe 3G areas or in 3G areas where there are a lot of 3G phones (cities, near schools, etc) this will help quite a bit.
In Edge only areas it saves a lot of battery by not searching for HSPDA when it does not exist.
Note: I also see something of a speed test hit on GSM (PRL), but this may be just the speed test app doing odd things.
Click to expand...
Click to collapse
from this thread:
http://forum.androidcentral.com/google-nexus-one/13037-wifi-turning-off-sleep-mode.html

RogerPodacter said:
here is a really good explanation about the gsm auto (prl) setting from another forum. i'll quote and also link it.
from this thread:
http://forum.androidcentral.com/google-nexus-one/13037-wifi-turning-off-sleep-mode.html
Click to expand...
Click to collapse
Thanks for that. Good read

sheek360 said:
just conducted a test. I get no service inside of my sons school with my n1. i put my n1 on gsm auto prl and i left my sons n1 on wcdma preferred. we both walked in the school till we lost service. as soon as we walked out i was on full bars of edge. my son was on 1 bar of 3g. i wanted to repeat the test over and over again but my wife gave me "that" look. BTW my daughters moto cliq had full bars of 3g inside the school and outside the school.
kids are 8 and 10, they have never brought home a B. straight a's and always on the honor roll. they wanted android phones, my 10 year old chose the n1 and my daughter picked the cliq. wife has a bb till the mytouch slide is released! android family that roots together stays together lol
Click to expand...
Click to collapse
Damn!!!! When I was 10, smartphone didn't even exist, people would stare at you if you even had a 'dumb phone'. Kids 20 years from now would probably be playing with nuclear powered smartphone. =)

sheek360 said:
kids are 8 and 10, they have never brought home a B. straight a's and always on the honor roll. they wanted android phones, my 10 year old chose the n1 and my daughter picked the cliq. wife has a bb till the mytouch slide is released! android family that roots together stays together lol
Click to expand...
Click to collapse
LMAO, you're family is awesome!

OrganizedFellow said:
LMAO, you're family is awesome!
Click to expand...
Click to collapse
Lol thanks

sheek360 said:
just conducted a test. I get no service inside of my sons school with my n1. i put my n1 on gsm auto prl and i left my sons n1 on wcdma preferred. we both walked in the school till we lost service. as soon as we walked out i was on full bars of edge. my son was on 1 bar of 3g. i wanted to repeat the test over and over again but my wife gave me "that" look. BTW my daughters moto cliq had full bars of 3g inside the school and outside the school.
kids are 8 and 10, they have never brought home a B. straight a's and always on the honor roll. they wanted android phones, my 10 year old chose the n1 and my daughter picked the cliq. wife has a bb till the mytouch slide is released! android family that roots together stays together lol
Click to expand...
Click to collapse
Ah yes..at my school, the first girl that got knocked up was one of those kids. Don't worry..I'm sure that won't be your kid though. Just kidding! ;-)
But seriously..keep an eye on her!
Sent from my Nexus One

Interesting, my Nexus S constantly drops the 3g connection (need to wait 15-30 seconds before it connects again), and I just realized its set to GSM/CDMA Auto PRL, will set it to WCDMA preferred and see.

You'll have to keep an eye on it, unless you change the build.prop, it will revert back to it's default setting.

How do I change this on my desire, the wcdma is terrible at my house so I always need to switch it manually or else if someone calls they can't hear me...
Would love it if I could get my phone to just switch to gsm when the wcdma sucks
Sent from my HTC Desire using XDA App

That's how it behaves by default.
You can force GSM on by ticking the 2G networks only box in the network settings though.

bunnybash said:
How do I change this on my desire, the wcdma is terrible at my house so I always need to switch it manually or else if someone calls they can't hear me...
Would love it if I could get my phone to just switch to gsm when the wcdma sucks
Sent from my HTC Desire using XDA App
Click to expand...
Click to collapse
For the nexus one you press on the dial pad: *#*#4636#*#* and go into the hidden menu.

Rusty! said:
You'll have to keep an eye on it, unless you change the build.prop, it will revert back to it's default setting.
Click to expand...
Click to collapse
You are right, it revert back to its default setting. How do I change it in build.prop? I don't see anything related in that file.

The entry ro.telephony.default_network=0 needs changing to 3.

Rusty! said:
The entry ro.telephony.default_network=0 needs changing to 3.
Click to expand...
Click to collapse
Will this make GSM Auto (PRL) stick?

Should do, although mine seems to revert itself to WCDMA Preferred every so often anyway.

the PRL's of each of the phones should be different. They update those files constantly. It wouldn't be a fair and accurate test unless you knew for sure that you had the same PRL on two separate phones one that runs WCDMA and the other EDGE.
The PRL contains the RF information that your cell can access. When they update them they change the signals that your phone can and can't access so some signals are inhibited or blocked. There can be other modifications besides this like restricting speed or data.

WiFi and LTE/3G always on simultaneously?

Wondering if anyone knows what's up here?
On my D1 I either had WiFi OR 3G symbol in the notification vary. But since getting the Bionic I ALWAYS have WiFi and either 4G-LTE or 3G also. Is this normal? And if so, is it just a wonky indication or is it really accurate? I guess it doesn't really matter except in terms of battery usage, which seems fine. Of course if I turn WiFi off I then only have the LTE-4G/3G symbol.
This is all true regardless of whether I am in CDMA/LTE or CDMA Only.
Any/all guidance is appreciated.

les017 said:
Wondering if anyone knows what's up here?
On my D1 I either had WiFi OR 3G symbol in the notification vary. But since getting the Bionic I ALWAYS have WiFi and either 4G-LTE or 3G also. Is this normal? And if so, is it just a wonky indication or is it really accurate? I guess it doesn't really matter except in terms of battery usage, which seems fine. Of course if I turn WiFi off I then only have the LTE-4G/3G symbol.
This is all true regardless of whether I am in CDMA/LTE or CDMA Only.
Any/all guidance is appreciated.
Click to expand...
Click to collapse
Yeah I noticed the same thing. LTE is on all the time with wifi, the is no handover whatsoever. It is killing the battery by cell standby. There is no way to change this in any of the settings except turning data completely off.
Sent from my DROID BIONIC using Tapatalk

Same here. I hope they fix that. Lol.
Sent from my DROID BIONIC using XDA App

Actually I think you two are mis understanding the icons. If you read the manual, the one that turns BLUE is the active data connection. Some things (like the Verizon app) can only go over the verizon network. Additionally, you will ALWAYS have power to the cell radio (how else do you recieve an incomming call or a SMS?)
That is why LTE takes up so much batter across devices.
One of the best battery saving options (in my opinion) is to only use cmda unless you need the LTE - you can change that under mobile network options.
I am willing to bet people wanted to know IF they had cell reception in an area with out having to disconnect from wifi to see a graphical representation.
It isnt as sinister as it seems Keep in mind too that in order to do both voice and data, your data goes over LTE and your voice uses CDMA (that is off memory, i may have the bands reversed) so you are using two radios at once... welcome to the world of LTE battery draid

azwildfire said:
If you read the manual, the one that turns BLUE is the active data connection.
Click to expand...
Click to collapse
You had me at "if you read the manual"
This sounds about right. I had previously glossed over this because of being so used only seeing WiFi or Cell data. Makes sense now, thank you.

azwildfire said:
Actually I think you two are mis understanding the icons. If you read the manual, the one that turns BLUE is the active data connection. Some things (like the Verizon app) can only go over the verizon network. Additionally, you will ALWAYS have power to the cell radio (how else do you recieve an incomming call or a SMS?)
That is why LTE takes up so much batter across devices.
One of the best battery saving options (in my opinion) is to only use cmda unless you need the LTE - you can change that under mobile network options.
I am willing to bet people wanted to know IF they had cell reception in an area with out having to disconnect from wifi to see a graphical representation.
It isnt as sinister as it seems Keep in mind too that in order to do both voice and data, your data goes over LTE and your voice uses CDMA (that is off memory, i may have the bands reversed) so you are using two radios at once... welcome to the world of LTE battery draid
Click to expand...
Click to collapse
That's actually incorrect. There's a good amount of talk going around that the data radios (both 3G and 4G) aren't being turned off when switching to wifi, and causing even more battery drain. In GingerBread, the icons turning a different color (blue on Blur, green on basically everything else) doesn't mean it's got an active data connection, it means it's got an active connection to the Google services (for sync, etc). Every other phone shuts of the radios when connected to wifi, including the Charge, Thunderbolt and Revolution. And while you're connected to wifi, everything non-data related (text messages, calls, voicemail) is done over 1X, which is just the signal bars.

Interesting, so which radio keeps the 1x connection alive? how does it work when i am NOT on wifi and can browse the web and email while on a phone call? (Couldnt do that on my incredible)
And while comparing battery stats, cell stand by has a larger percentage on my T-bolt then it does on my Bionic (I checked them this morning, both were unplugged from the chargers when i went to bed)

They're separate radios, the 1X radio doesn't use nearly as much power so it can stay on all the time.

Are you implying the Bionic has 3 antenna? 1x - CDMA - LTE as all seperate antenna?
THe FCC filing shows only two. One that is a combined CDMA/LTE and one that is a combine WIFI and Blue tooth.
http://cdn.androidcentral.com/sites...w550h500/postimages/9274/droid_bionic_fcc.jpg
I am just curious as to your understanding. I think this is a healthy chat
And your previous mention of the icon color changing when they connect to Google services sort of affirms that it is the data connection (since I imagine they have to use the data connection to connect to google)

Interesting test. Wifi is connected, turned off mobile data under data settings and the 3g icon that looked to be connected disappeared... but I still had a data connection.
Is there an app that will allow you to write the logic- if wifi is on, turn off mobile data, and reset when wifi is turned off?
Sent from my DROID BIONIC using XDA App

I'm getting really bad battery life. Right now I am connected to wifi. I have 3 icons....wifi, 4g LTE, and signal bars. All are blue except the up/down arrows under 4G. What does this indicate?

There seems to be a bug where the phone doesn't shut off the radio when turning on WiFi, I've reported it to motorola.

bobreiter said:
Interesting test. Wifi is connected, turned off mobile data under data settings and the 3g icon that looked to be connected disappeared... but I still had a data connection.
Is there an app that will allow you to write the logic- if wifi is on, turn off mobile data, and reset when wifi is turned off?
Sent from my DROID BIONIC using XDA App
Click to expand...
Click to collapse
Tasker is a great app that should let you do that
It is paid though, but I don't mind paid apps if they are good (no different than donating to the devs here in my opinion)

Data Switch

Afternoon all,
I am running a stock D3 that is rooted only and de-bloated. One of the things I have been noticing is that there seems to be a serious lag in when my D3 is running in a 1X coverage area and takes a long time to go back to 3G. In fact I usually have to put the D3 into airplane mode and then back to data, which kicks it back in 3G.
Anyone else running into this?
Thanks,
Steve

I experience this on my xt860. Although it will do it even if I haven't been in low signal areas. Seems pretty random and annoying
Sent from my rooted xt860

Have you updated to the latest Verizon Firmware? Also have you done a *228? If you are having issues with frequent 1x instead of 3g and you know you live in a good area then you may need to call Verizon tech support and see if they can do something for you as far as reconfiguring your phone. Plus set your phone to Home Only for roaming settings because that may get in the way.
Sent from my DROID3 using XDA App

build.prop

Can somebody be so kind and upload stock buid.prop for Bell AHD?
Wanna see differences between the AT&T and Bell setup - looking for way to enable network type switch in phone info
Thanks

here you go!
please extract it to get the build.prop for a bell AHD

Well, I tried replacing build.prop in hope that will enable band switch but it did not
I would really like to have option enabled in settings or trough phone info.
In phone info i can switch between LTE/GSM/WCDMA and LTE/CDMA/EvDO/GSM/WCDMA.
Any other choice reverts back to LTE/GSM/WCDMA. I have done EB40 battery mod and I am not worried about battery life as I can pull out 2.5 days on medium usage but 70% of my day I do not need LTE so I was hoping to extend battery life even more by switching to EDGE

https://play.google.com/store/apps/details?id=de.mangelow.network
Try that app and see if it works for u... o used it on my atrix 2
Sent from my MB886 using xda app-developers app

I dont know what ATT did...
I followed instructions from here: http://forum.xda-developers.com/showthread.php?t=1386383 and I got network switch enabled in settings but when I select GSM only setting does not stick...Reverts back to LTE.
I tried adding ATT 3g APN (wap.cingular) but it wont connect to the data network at all???
Really stuck now.
Generaly I always used 2g data connection when I am at work as I still can get my emails and mms and do some basic browsing and internet radio streaming. Then if I stream videos or download apps or upload large amount of pics I would switch to 3g (LTE in this case)
I wonder does it have anything to do with account provisoning for LTE???
I really would like to have that option enabled and working. I know ATT is in the process of phasing out 2G data on account of LTE but as long as it is available I would like to use it...

After completing the steps in that post and deleting the backups change the operator to maritime. Successfully dropped down to 2G /EDGE. Thanks for this thread. Was hoping someone would post a bit of information on it. Here's some screenshots.
Sent from my Motorola Atrix HD MAXX

Great - I did it too, bad thing it does not stick after reboot - reverts to auto select network but its better than before
I wonder what the heck is Maritime in network selection...
Anyhow will look more into keeping manual network selection after reboot.

h078 said:
Great - I did it too, bad thing it does not stick after reboot - reverts to auto select network but its better than before
I wonder what the heck is Maritime in network selection...
Anyhow will look more into keeping manual network selection after reboot.
Click to expand...
Click to collapse
Would have never have guessed to search for networks and select Maritime. Thanks for the tips guys. I can now force 2g at work.

seh6183 said:
Would have never have guessed to search for networks and select Maritime. Thanks for the tips guys. I can now force 2g at work.
Click to expand...
Click to collapse
h078 said:
Great - I did it too, bad thing it does not stick after reboot - reverts to auto select network but its better than before
I wonder what the heck is Maritime in network selection...
Anyhow will look more into keeping manual network selection after reboot.
Click to expand...
Click to collapse
Maritime is another AT&T network. It was actually the default on my Atrix 4G. Sadly, the Atrix HD doesn't display the code for each maritime network. Shouldn't be to hard to switch the default to it if we knew which code it was. Setting the default to Maritime wouldn't help considering there's 3.
Sent from my Motorola Atrix HD MAXX

Very interesting. If set to 3G only on Maritime it displays the 4G without LTE. Through Phone Info, it shows that I'm connected through HSPA as well. Selecting Automatic sticks with HSPA unless I get better LTE service. Seems like 3G is a good balance between speed and battery life.
Sent from my Motorola Atrix HD MAXX

Neroga said:
Very interesting. If set to 3G only on Maritime it displays the 4G without LTE. Through Phone Info, it shows that I'm connected through HSPA as well. Selecting Automatic sticks with HSPA unless I get better LTE service. Seems like 3G is a good balance between speed and battery life.
Sent from my Motorola Atrix HD MAXX
Click to expand...
Click to collapse
Is there any proof that disabling LTE saves battery life? In older phones, disabling 3G would save battery life because there were separate chip-sets for 2G and 3G services. That isn't the case now, a single chipset handles all signaling. Thus, there are no chips that are powered down when 4G is disabled. I would expect battery savings to be minimal.
Additionally, because of the increase efficiency of the LTE network (combined with less network loading), your phone will have an open data connection for a much shorter time, when transmitting data.

I've got my AHD on the AT&T network using a StraightTalk AT&T sim. $45.00 unlimited everything. With the APN that straight talk uses, it never searches for LTE. Just on 4g all day long, with no LTE searching at all.
Sent from my A200 using xda premium

Guys you need this app
https://play.google.com/store/apps/...251bGwsMSwxLDEsIm15Yy5waG9uZS5QaG9uZUluZm8iXQ..
No need to edit build.prop or root.

mandrsn1 said:
Is there any proof that disabling LTE saves battery life? In older phones, disabling 3G would save battery life because there were separate chip-sets for 2G and 3G services. That isn't the case now, a single chipset handles all signaling. Thus, there are no chips that are powered down when 4G is disabled. I would expect battery savings to be minimal.
Additionally, because of the increase efficiency of the LTE network (combined with less network loading), your phone will have an open data connection for a much shorter time, when transmitting data.
Click to expand...
Click to collapse
Well, I'm going on 4 hours of screen on time, 13 hours of listening to music, etc and still holding 62%. That's from jumping between 2G and 3G on an as needed basis.
--edit--
Seems the jellybean leak comes with this already done? Able to switch to just about everything. Getting HSPAP instead of HASPS a well.
Sent from my Motorola Atrix HD MAXX

[Q] 4G or LTE with Straight Talk AT&T?

After weeks of playing around with build.props, APNs, and patches, on custom ROMs and stock, I am still attempting to get faster and more consistent data.
4G and LTE are supposed to be possible, but I can't figure it out.
I can get around 5 Mbps down using WCDMA only, but the very next moment in the same spot could be something entirely different.
My mobile data goes out quite often where it is just the outline of a triangle. I have never seen any other letters besides an E and a H.
I am currently on stable CM 10.2.1 installed on a newly created and wiped SS Slot 1, and have been for about a week and a half.
I used default network = 0 in build.prop this time around.
I finally managed to get my phone to recognize my SIM card while using the following configuration:
default network in Phone Testing = LTE/GSM/CDMA auto (PRL) and
preferred network mode in Mobile Network Settings = Global (CDMA/EVDO/LTE/GSM/WCDMA).
It acted really strange at first but the settings stayed even after a handful of reboots.
I am using Straight Talk's current APN settings (tfdata).
My dBm is constantly going from about -90 something to -108 and my asu ranges from around 3 to 14.
Before I just now rebooted, and every so often, it shows 2147483647 dBm and 255 asu; I have only just noticed this in the past few days, however. It is now back to -101 dBm and 6 asu after restarting.
I have attached screenshots of it doing that and a shot of "normalcy", as well as my last few speed tests.
Can anyone tell me what I might be doing wrong?
Should I try default network = 10 again in build.prop?
Or could anyone provide a copy of a build.prop working on all possible network modes (with the ability to edit APNs)?
Thanks in advance. I will take any and all advice or opinions.
I am so over trying to figure this out! When I really need my mobile data, it doesn't work!

I have attached a couple of graphs of my signal highs/lows etc. These results are from the Real Signal app.
I don't really know what they mean, but I am hoping they might shed some light on my issue and I'll get an answer from someone.
Sent from my XT875 using xda app-developers app

How are you getting it to get edge data? On mine I either have HSPA or nothing. Is there a way to make it default automatically to edge when the HSPA signal gets weak. I tried using liquid smooth 4.2.2 and changed it to 2g only and never could get signal. Change it to auto and get HSPA again
Sent from my Nexus S using xda app-developers app

should i take the bionic out office space style?
twfs said:
How are you getting it to get edge data? On mine I either have HSPA or nothing. Is there a way to make it default automatically to edge when the HSPA signal gets weak. I tried using liquid smooth 4.2.2 and changed it to 2g only and never could get signal. Change it to auto and get HSPA again
Click to expand...
Click to collapse
Not really sure how, and when it is on Edge, data hardly works anyway, so I probably can't help you there.
But I do have default network = 10. Only other thing I changed was telephony.lteOnCdmaDevice=0 to get the APN menu under mobile networks.
However, at the moment (and the majority of moments), with Wi-fi off, I have no data, -109 dBm, 5 asu, GPRS service is disconnected, and my phone number is "unknown", so I am definitely not in the position for giving suggestions.
Am going to try CM 11 again today, but I was hoping for some answers before doing anything other than installing..
I will ask more specific questions in the hopes that someone, anyone, can provide some sort of idea for at least 1 of them..
Is it even possible for the Bionic to have consistent, non-frustrating access to 2G, 3G, 4G, and LTE when unlocked for the AT&T or T-Mobile networks using Straight Talk?
Is there a way to enable the APN menu without changing the build.prop?
Does anyone have a targa build.prop (entire thing or line changes) of phone that has reliable data, etc. working on 2G, 3G, 4G, and LTE?
Could it be an issue with the SIM card itself?
Am I even approaching this from the right angle?
Should I just give up and get a new phone?
Thanks in advance.

Patch Idea
I am a novice at best and that may be a stretch.
BUT. Both of my Bionics are running on Straight Talk AT&T 4G sim cards.
One is a hardware REV-B the other is hardware REV-C.
The REV-C is rooted and running on the Jelly Bean stock rom.
The REV-B is rooted and running on a MoKee MK4.4 KitKat Release that I downloaded
from their site and opened in "Safestrap".
I do not think that I have achieved 4G yet however,
I do have fairly stable signal and data since
I installed a CDMA to GSM patch that I found searching these forums.
It includes Straight Talk and AT&T APN!
I am not aloud to post links yet. But if you search for these things here you will probably find them fairly quickly.
I would love to know if you can achieve 4G!
Good Luck!
Netzerite