Important info: Running CM9 (len00bs)
So last night I had an AT&T sim card that i wanted to try out in the rezound. Powered down, popped out the vzw card, popped in the AT&T card. Couldn't get signal to show up, so i powered down and popped the vzw card again and got signal. I'm stuck on 3G and it won't go to 4G. I checked to make sure the settings were on LTE/CDMA, and I tried toggling LTE Only and it goes to no signal with a roaming logo. I tried toggling data on and off, and it still kicks on to 3G only. It was working perfectly prior to popping in that AT&T sim. Tried restoring my original backup through TWRP, but it won't go passed the 4G boot logo (assuming i need to flash the old boot.img back on for it to boot properly?). So then i restored the CM9 backup i had and i'm back to the 3G only issue.
Is there something else I need to do to get it to see this is a 4G card?
Found the problem. Even though LTE was selected in the front end on CM9, I went into *#*#4636#*#* and it showed GSM was selected. Looks like popping in that ATT sim flipped this to GSM/CDMA auto (PRL), thus limiting me to 3G. I changed it to LTE/CDMA auto (PRL) and bam 4G is back. :good:
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Hey folks, any ideas why my APN will auto-switch to non LTE - Verizon Internet every fourth or fifth time I unlock the screen? It's been doing this for about two weeks since I flashed CM10.1 and Devil Kernel. I've since tried going back to TW as well as wiping everything on the phone including system prior to flashing different ROMs. Right now I'm running CM10.1 08-13 nightly with Plasma 1.67 kernel and it's doing the same thing.
At first I thought it could be signal strength causing it to not connect to LTE, but it's completely switching APN to non-LTE. At wit's end right now because no combination of stock TW or CM10.1 will let it stick.
Guess I should ask my question:
Is there a way to make the APN stick to LTE - Verizon Internet instead of letting it arbitrarily switch to EHRPD - Verizon Internet, which drops my LTE connection? Anyone have any ideas as to why it's switching on its own in the first place? When I'm on the EHRPD - Verizon Internet the phone doesn't seem to ever switch back to LTE, even though what I read on the 'net says it should be switching back and forth depending on signal. I have to go into the *#*#4636#*#* menu and switch it back to LTE/GSM/CDMA auto (PRL) as it has switched to CDMA auto (PRL) when on EHRPD - Verizon Internet.
Seamonkey79 said:
Hey folks, any ideas why my APN will auto-switch to non LTE - Verizon Internet every fourth or fifth time I unlock the screen? It's been doing this for about two weeks since I flashed CM10.1 and Devil Kernel. I've since tried going back to TW as well as wiping everything on the phone including system prior to flashing different ROMs. Right now I'm running CM10.1 08-13 nightly with Plasma 1.67 kernel and it's doing the same thing.
At first I thought it could be signal strength causing it to not connect to LTE, but it's completely switching APN to non-LTE. At wit's end right now because no combination of stock TW or CM10.1 will let it stick.
Guess I should ask my question:
Is there a way to make the APN stick to LTE - Verizon Internet instead of letting it arbitrarily switch to EHRPD - Verizon Internet, which drops my LTE connection? Anyone have any ideas as to why it's switching on its own in the first place? When I'm on the EHRPD - Verizon Internet the phone doesn't seem to ever switch back to LTE, even though what I read on the 'net says it should be switching back and forth depending on signal. I have to go into the *#*#4636#*#* menu and switch it back to LTE/GSM/CDMA auto (PRL) as it has switched to CDMA auto (PRL) when on EHRPD - Verizon Internet.
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I am having the same issue, but if I force it into LTE through the test menu I can get data at 4g speed. But it shows no signal.
I thnk it is suppose to be on the VZWINTERNET. I just had this issue with carbon, and I figured out the network options I were using was wrong. I kept choosing LTE/CDMA, but it should've been LTE/CDMA/EvoD and once I did that i got snapepd back into 4g.
kimdoocheol said:
I thnk it is suppose to be on the VZWINTERNET. I just had this issue with carbon, and I figured out the network options I were using was wrong. I kept choosing LTE/CDMA, but it should've been LTE/CDMA/EvoD and once I did that i got snapepd back into 4g.
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On the advanced data menu that is what mine is showing, when ever I select the LTE apn it bounces back to a 3g one.
Got a new sim card and the issue is fixed.
vertig0730 said:
Got a new sim card and the issue is fixed.
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When you flashed the ROM originally and started having this problem were you asked to activate your phone. I am having the same issue after flashing a 4.3 ecliptic one ROM on my HTC One. I was running the same ROM but 4.2.2 before flashing. The first thing I was required to do was *228 for activation. I used option 2 to update the roaming capabilities and after that I could no longer stay on LTE. I was pushed over to ehrpd. Even when I tried LTE only using the method listed above I could not get a connection to the internet (even though it showed APN= LTE).
I will probably just go to VZW and get another SIM card for LTE.
Any thoughts would appreciated.
dave4485 said:
When you flashed the ROM originally and started having this problem were you asked to activate your phone. I am having the same issue after flashing a 4.3 ecliptic one ROM on my HTC One. I was running the same ROM but 4.2.2 before flashing. The first thing I was required to do was *228 for activation. I used option 2 to update the roaming capabilities and after that I could no longer stay on LTE. I was pushed over to ehrpd. Even when I tried LTE only using the method listed above I could not get a connection to the internet (even though it showed APN= LTE).
I will probably just go to VZW and get another SIM card for LTE.
Any thoughts would appreciated.
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You will need a new sim. You don't have to activate and especially not update via *228 with a 4G sim card.
jcollier said:
You will need a new sim. You don't have to activate and especially not update via *228 with a 4G sim card.
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Thanks. It appears I am not the only one having this issue.
http://forum.xda-developers.com/showthread.php?t=2512449&page=4
Although, I am afraid that I might still need to go to VZW.
Here is my story.
Last night I decided to jump from cm10.1.3. to the latest AOKP nightly. Something went wrong with the flash, probably a download corruption due to the fact that I downloaded over lte. In the install I also overwrote my recovery image with the dual boot devil kernel one. On boot I had problems and couldn't restore my backup. I assembled a flashable package CWM 6.0.4.1 IIRC. I was able to restore and was back in business.
I downloaded aokp on my pc instead of my phone, flashed that, and it was working fine for a couple hours. At some point I saw 2 bars of 3g. I was like wtf, whatever and connected to wifi. I am on an unlimited plan, so this was an inconvenience. I flashed back to cm to get some files I wanted, and went to sleep. still having 3g.
Woke up, 3g. The network must be broken, right?
I meet up with my sister, she has 4g lte full service.
I reboot, see full service, see the 4g icon, then see the 4g icon go away, service drop to 2 bars and the 3g icon come up.
I reflash my radio, 3g
I wipe /system/,/data/,/cache/, restore, 3g
reslash kernel, 3g
Why is my phone dumping lte in favor of 3g. Did I piss off verizon?
EDIT: I just installed stock rooted and still have 3g only
I just got 4g for a minute after cycling airplane mode. it switched to 3g during a speed test.
Edit, I seem to have resolved this by toggling my network mode. I find it odd that this would have an impact across backups.
Edit2 sometimes it doesnt stick on reboot. Also goes back to 3g after a call. This is very wacky.
Now 3g stayed connected in a call.
What is the code to reprovision the sim card? Some people have seen results with this. however the code for the s3 that I found wont work.
verizon is sending me a new sim. I am glad I flashed to stock because even over the phone they asked for my build number.
After setting up, did you by chance change any of the settings in PA to turn on 2g when the screen is off? I was doing this and it would change my network settings to GSM instead of LTE+Evo
kimdoocheol said:
After setting up, did you by chance change any of the settings in PA to turn on 2g when the screen is off? I was doing this and it would change my network settings to GSM instead of LTE+Evo
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nope, in fact I even restored with odin. On a dead stock unrooted rom with a locked bootloader. lte didn't work.
I doubt it is the sim though, because I popped it into my rezound with an adapter and had a really good connection. I suppose we shall see.
These are my current available apns. When I try to create a new one it has a MNC value of 005. 4gtricks.com says it should be 012. If I change the MNC to 012 the system automatically deletes my new APN. Anyone have settings to offer me? Or maybe suggestions. /system/etc/apns-conf.XML is there and full of info.
Sent from my SCH-I605 using Tapatalk
I just popped my sisters sim into my phone. I instantly had 4g. So yeah, that leaves my sim, or an account problem. But like I said my sim provided me with 4g when I tried it in my rezound.
Sent from my SCH-I605 using Tapatalk
johnwaynegacy said:
These are my current available apns. When I try to create a new one it has a MNC value of 005. 4gtricks.com says it should be 012. If I change the MNC to 012 the system automatically deletes my new APN. Anyone have settings to offer me? Or maybe suggestions. /system/etc/apns-conf.XML is there and full of info.
Sent from my SCH-I605 using Tapatalk
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should have been LTE+
Solved. It was the SIM
Sent from my SCH-I605 using Tapatalk
I switched to T-Mobile from Verizon the other day, and the SIM worked fine at first, got LTE and everything after upgrading the radio. Now today, the service indicator is switching between "emergency calls only" and T-Mobile voice network every two seconds or so. I can make calls fine if I hit the dial button when it indicates service, and after hanging up, it will sometimes stick and register HSPA/LTE anywhere between a few minutes and a few hours. It will always eventually drop and restart the on/off cycle. Reboots will always cause it even if I just got it to "lock".
I started out using SlimKat 4.4.4, but I couldn't hang up a call. I then updated the ROM to a later version and that's when this problem began. I flashed back to the original ROM (wiped, etc.) and also installed CM11 nightly, all of which presented the same issue. I flashed the radio to 1 version prior to no avail.
I currently have it set to LTE/GSM (PRL auto) and the APN settings for fast.t-mobile.com are correct. I can make and receive calls, SMS, and data when the network is available.
Does anyone know what might be happening here?
ChrisK15 said:
I switched to T-Mobile from Verizon the other day, and the SIM worked fine at first, got LTE and everything after upgrading the radio. Now today, the service indicator is switching between "emergency calls only" and T-Mobile voice network every two seconds or so. I can make calls fine if I hit the dial button when it indicates service, and after hanging up, it will sometimes stick and register HSPA/LTE anywhere between a few minutes and a few hours. It will always eventually drop and restart the on/off cycle. Reboots will always cause it even if I just got it to "lock".
I started out using SlimKat 4.4.4, but I couldn't hang up a call. I then updated the ROM to a later version and that's when this problem began. I flashed back to the original ROM (wiped, etc.) and also installed CM11 nightly, all of which presented the same issue. I flashed the radio to 1 version prior to no avail.
I currently have it set to LTE/GSM (PRL auto) and the APN settings for fast.t-mobile.com are correct. I can make and receive calls, SMS, and data when the network is available.
Does anyone know what might be happening here?
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I am running the T-mobile version of Dan's GE ROM and I get rock solid LTE pretty much everywhere.
First time I tried it I had that fluctuating deal...I was on global. I changed it once to LTE/GSM/WCDMA and it locked on to LTE. Now, it seems like it doesn't really matter. I think its still looking for Verizon bands. I had Liquid running OK for a while, too.
And make sure you are on RUIM/SIM...which you probably are if you have data at all.
brizey said:
I am running the T-mobile version of Dan's GE ROM and I get rock solid LTE pretty much everywhere.
First time I tried it I had that fluctuating deal...I was on global. I changed it once to LTE/GSM/WCDMA and it locked on to LTE. Now, it seems like it doesn't really matter. I think its still looking for Verizon bands. I had Liquid running OK for a while, too.
And make sure you are on RUIM/SIM...which you probably are if you have data at all.
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Awesome! I set mine to "TD-SCDMA, GSM/WCDMA and LTE" and immediately locked onto T-Mobile and ramped up from Edge through H+. I'm sure I'll get LTE if I wait a bit. Thanks!
Edit: Had to go back into preferred network type and select LTE as it set itself to 3G.
I have a VS985, rooted, on a custom ROM currently. The other day, I noticed I was only in 3G on my phone in an area where I usually get full 4G signal (tower is about half a mile from my apartment complex). It has refused to switch back to 4G ever since.
Here's what I've done so far:
Reflashed current ROM
Flashed new ROM
Flashed modem
Airplane Mode On/Off
Switched Networks to GSM Only, LTE/CDMA, and Global
Tried turning data on and off
Pulled SIM card out while phone was off
Access Points reset to default
Any other options? Should I KDZ back to 12B and start from scratch?
thvoicwethin said:
I have a VS985, rooted, on a custom ROM currently. The other day, I noticed I was only in 3G on my phone in an area where I usually get full 4G signal (tower is about half a mile from my apartment complex). It has refused to switch back to 4G ever since.
Here's what I've done so far:
Reflashed current ROM
Flashed new ROM
Flashed modem
Airplane Mode On/Off
Switched Networks to GSM Only, LTE/CDMA, and Global
Tried turning data on and off
Pulled SIM card out while phone was off
Access Points reset to default
Any other options? Should I KDZ back to 12B and start from scratch?
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Sounds to me like you may have fried the 4g in the sim card, happens occasionally. Vzw should give you a new one no problem.
Turns out the 4G would not work even with a new SIM. Replaced under warranty.
So, I got this phone but it's stuck on 3G. I saw it once switch to H, but I never got it on LTE.
I tried selecting it in the operator menu scan thing, and LTE is detected, but it doesn't want to kick in when I press it. Any ideas? Running the latest 7.0 build.
EDIT: Went outside, and 4G LTE came on. It went away after a reboot and it's still not back.
EDIT #2: It seems like this is actually a feature, it switches to LTE when I turn off/get out of WiFi.
So this is solved.