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What is wrong?

Ok look at these pictures, it shows me that I'm connected to LTE, even though I have a bad signal yet I get no 4G icon and no data. I'm very confused because it was working fine but then just stopped, are my modem settings messed up? Because when have I have Rev. A. set to eHRPD I get nothing so I have it on Rev. A. To enable, and when I put radio to cdma(PRL) I at least get 3G, but no 4G when I'm set to LTE/evdo as you can see in the pics, even though it says I'm connected. So are my settings messed up in another way? I have tried restores different roms, and have even put on the new radio, no luck, I don't think its a faulty phone because it was working before and now it still shows it recognizes the LTE, but I get no 4G in the status bar, so I'm very confused, I really don't feel like unrooting just to get it replaced because I think I'm just missing some setting or something. Any help or suggestions would be greatly appreciated.

Turn airplane mode on, wait 3 minutes, turn it off, and you should be good to go. As 4G continues to roll out, there are bound to be bugs and hickups.

-95 signal strength is really weak. i wouldnt be surprised if it didnt register because the signal is so weak. i guess the bigger question would be why isnt it switching to 3g when the signal is so poor

I have a similar issue. My 4G icon will be visible and it will be working. I deliver pizzas so I leave the phone in my car tethered to my XOOM. When I get back to my car everything will look fine but my data wont be working. Sometimes if I try to go to a website on my phone within a minute or so it will recover, but I've been having to do the airplane mode thing. It works but still takes several minutes to get internet back. I'm in Las Vegas and 4G works just fine. I started having the problem recently. I think when BAMF went to the latest RUU base, the LTE/3G transition fixes seem to have had the opposite effect.

mokitaco said:
-95 signal strength is really weak. i wouldnt be surprised if it didnt register because the signal is so weak. i guess the bigger question would be why isnt it switching to 3g when the signal is so poor
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Maybe that might be it at my house, but when I'm in town where it shows i have a perfect 4G signal it still doesn't connect

schwab16 said:
Maybe that might be it at my house, but when I'm in town where it shows i have a perfect 4G signal it still doesn't connect
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What are your Radio versions. I am presently reverting my radios since my problems started when I updated to the latest ones.

setite said:
What are your Radio versions. I am presently reverting my radios since my problems started when I updated to the latest ones.
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I installed the radio that came with das bamf 1.5, but i was still having issues before

I have tried both radios and I'm getting the same results. I'm sure something going with the network. We just have to be patient and give them time.

[Q] mobile data not working, poor or no phone signal

Hey guys, I haven't done anything to my phone but all of the sudden, the data and phone signal basically quit working. I have a very hard time getting texts, phone calls etc to go though but it will eventually (usually takes a while or a few tries) and as far as data goes, I basically have no connectivity at all unless I'm on wifi. It says 3g or H every once in a while, but it's really slow and usually doesn't stay for long. I'm running CM9, and like I said before I didn't change anything that I'm aware of that would have caused this problem. It worked fine before, and it just stopped. Ideas? Thanks

iamtheculprit said:
Hey guys, I haven't done anything to my phone but all of the sudden, the data and phone signal basically quit working. I have a very hard time getting texts, phone calls etc to go though but it will eventually (usually takes a while or a few tries) and as far as data goes, I basically have no connectivity at all unless I'm on wifi. It says 3g or H every once in a while, but it's really slow and usually doesn't stay for long. I'm running CM9, and like I said before I didn't change anything that I'm aware of that would have caused this problem. It worked fine before, and it just stopped. Ideas? Thanks
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have you called your provider? maybe its on their end.

I'm having the same exact problem... it shows my 3g it shows all my bars but instead of the bars being colored or the 3g be in color is gray. Also I cannot get back conectivity until I restart the phone. Does anybody have an idea what this is?

Are you on AT&T? I was not having any problems until a certain point in time, and I didn't change or do anything to incite them. I'm not even getting calls anymore, I'll just get all my texts in a wave every few hours. My data is useless, it won't stream, or load web pages, and my phone is frequently saying "Emergency calls only" when I'm sitting at my freaking house (which normally has full 3g and cell signal and is very fast)

This just started occuring with my 9020a on AT&T the first week of March. I switched SIM cards twice, spent about an hour on the phone with ATT, and sent the device back to Samsung who rolled back the software to 2.3.4 and the Radio to UKE1.
I still have the issue. Samsung says its not them. ATT does nothing. It;s liek the phone just stopped working, started dropped calls, missing calls, and the internet connection sucks. I have an iphone for work through ATT as well and have no issues with signal.
ANy help is appreciated.

Hmm
Make sure you have the right, most up to date settings for APN, and flash original radios. if it still doesn't work, make sure you have the i9020A, which has the at&t 3g antenna, not i9020T which has the T-Mobile antenna, vice versa.

Have you tried other radios for your device (make sure you flash the appropriate ones for your model)? Any signal info under Phone Information when dialing *#*#4636#*#*?

ChemicalD said:
This just started occuring with my 9020a on AT&T the first week of March. I switched SIM cards twice, spent about an hour on the phone with ATT, and sent the device back to Samsung who rolled back the software to 2.3.4 and the Radio to UKE1.
I still have the issue. Samsung says its not them. ATT does nothing. It;s liek the phone just stopped working, started dropped calls, missing calls, and the internet connection sucks. I have an iphone for work through ATT as well and have no issues with signal.
ANy help is appreciated.
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Sounds like you're having the exact same problem I am having. I switched sim cards, flashed different roms, etc and nothing. (although to be fair, after the new sim, things work better, but still not well) I'm about ready to pop my sim back in my craptivate and just go with that... or buy an iphone off of craigslist.

Billchen0014 said:
Make sure you have the right, most up to date settings for APN, and flash original radios. if it still doesn't work, make sure you have the i9020A, which has the at&t 3g antenna, not i9020T which has the T-Mobile antenna, vice versa.
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I am 100% sure I have the 9020a, but I don't know anything about APN and flashing radios. I have only ever flashed full roms before, so I wouldn't know where to look for the original radio.

Oogway13 said:
Have you tried other radios for your device (make sure you flash the appropriate ones for your model)? Any signal info under Phone Information when dialing *#*#4636#*#*?
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I have not tried other radios. The signal info seems solid, sitting at my house, but the 3g is still horridly slow. It taked 15-30 seconds to load a webpage, even a pretty mundane one like google. Messages still come through in waves, and often won't send

About your APN, AT&T should provide you with the proper values to put in under Settings | Wireless & Network | More | Mobile Networks | Access Points Names.
If you are on ICS, they values should populate by themselves.
Can you try flashing other radios and see if you encounter the same problem:
http://forum.xda-developers.com/showthread.php?t=1116884
Make sure you backup your EFS folder (and all data for that matter).

I had similar problems, they were related to turning 3g on/off with a APN widget while the phone had little signal. As soon as started enabling and disabling 3g on the android options everything was back normal.

alexfiorani said:
I had similar problems, they were related to turning 3g on/off with a APN widget while the phone had little signal. As soon as started enabling and disabling 3g on the android options everything was back normal.
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the data works most of the time now it's just retardedly slow. I can't stream music even on low quality, nor can I watch youtube without leaving it for 5 minutes to buffer,pages take forever to load, and I was downloading a 6 meg app and it took 20 minutes to download whenI was leaving the phone alone and not moving. I got really sick of trying to fix it and finally gave it to geeksquad to send in to get replaced. sigh.

Mobile Network problem (Solved)

Most of the time it works fine, but if the signal drops I get no internet.
Even if I have one bar signal, the phone tries to connect to 3G or H, which is impossible, so internet doesn't work. I think that when the signal drops the phone should switch to 2G, right?
In settings I have GSM/WCMDA auto checked.
I tried different radios and RILs, but I haven't found a solution. Thx in advance

I was having this issue last night, someone mentioned T-Mobile is having some tower issues. Which rom is it? Is it happening with just one rom or is it any rom? It happened to me running Cm10 then when I switched back to DKOS I got my signal back. I was trying everything also, new rils, ect. The only thing that helped me was to switch roms. Hope you get your data back soon! Maybe try out some different roms to see if it returns.
Sent from my DKOS using xda premium

realsis said:
I was having this issue last night, someone mentioned T-Mobile is having some tower issues. Which rom is it? Is it happening with just one rom or is it any rom? It happened to me running Cm10 then when I switched back to DKOS I got my signal back. I was trying everything also, new rils, ect. The only thing that helped me was to switch roms. Hope you get your data back soon! Maybe try out some different roms to see if it returns.
Sent from my DKOS using xda premium
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I am using Viper S and I am in Albania, Europe, so it's not related to T-Mob.
The strange thing is that it doesn't switch to 2G, no matter how low the signal is, it always tries to connect to H. Does anyone have this problems with Viper?
Edit. By testing with different RILs, Radios I came up with the best configuration for me.
It's the first time I get 7MB down and 2 MB up. The max before was 5.5MB up.
But the problem with 2G network is the same, so I think it has smth to do with the ROM
Edit:I realized that it was my networks problem. So if you are on Vodafone Albania it's normal to lose connection once in a while.
But there's a simple solution to this problem. I found an app which resolves the probem perfectly 3G RECONNECT

My AT&T One X looses network connectivity PROBLEM

Hi,
I have an HTC One XL from AT&T.
It is SIM UNLOCKED and BOOTLOADER UNLOCKED. It is running CleanROM.
The problem is that my phone looses 3G connectivity and the only way to recover it it's rebooting the phone. The 3G still shows but there is no activity and the apps try to connect until they say "network problem".
I don't use it on AT&T as I live overseas. I do not have LTE so my phone is set to "WCDMA preferred"
I tried with other roms (CyanogenMOD 10, MIUI, etc.) and with almost every RADIO (flashing them with TRWP Recovery and wiping cache/dalvik after).
When 3G/HDSPA works, internet works really fast... but then it "disconnects" and everything sucks.
What do you recommend?
Best Regards.

Not a fix, but have you tried turning airplane mode on/off rather than restarting your phone?
I used to get this problem constantly with stock. Once I installed Viper, I haven't had a problem since. Don't know enough about radios to tell you if a new rom flashes a different radio though.

Try going into recovery, and wiping cache and Dalvik. Similar to area51avenger, I've had this same problem on a couple ROMs, and wiping cache and Dalvik fixed it. Might not work for everyone, but it can't hurt.

My friend i aleady tried that without any good result.
Sent from my Nexus 7 using Tapatalk 2

do you have the right APN? if you dont have the correct apn for the LTE network then it will drop connection whenever it searches for one. Maybe just run on WCDMA/gsm instead of WCDMA/GSM/LTE. It solved the problem for me on rogers here in Canada on cleanROM

I have the right APN.
Here we dont have LTE so I run the phone in WCDMA/GSM only... no LTE
Problem persist.
Also replace the phone IS NOT AN OPTION
Sent from my One X using Tapatalk 2

Is there something like fast dormacy?
Please, need help.

I've had the same experience on both rooted and non-rooted HOX's with various ROMs. I have concluded that it has nothing to do with the ROMs and more to do with the HOX itself but only when not on LTE. Before LTE was turned on in metro Detroit I had this problem constantly. I use the Airplane mode trick to resolve the issue in most cases. Now when I'm in an LTE coverage area my data is very reliable but as soon as I'm somewhere that doesn't have it (rural areas or inside with a poor signal) that ugly problem returns. It sucks because it's clearly a widespread issue that may never get resolved and I don't know who to hate at this point.

[Q] 4g data drops often...too often

i have to reboot in order for the 4g data to work again but it only stays on for about a minute and then it stops working again. everything else on the phone works ( text, voice, wifi etc...) I read somewhere that flashing different radios might fix it but im not sure about that. anyone else experience this and have a work around? i am currently on baseband i535VRLG1
Thanks In advance
i called Verizon and they said it may be the sim card thats damaged. if that were the case wouldnt voice and text fail as well?

frunas80 said:
i have to reboot in order for the 4g data to work again but it only stays on for about a minute and then it stops working again. everything else on the phone works ( text, voice, wifi etc...) I read somewhere that flashing different radios might fix it but im not sure about that. anyone else experience this and have a work around? i am currently on baseband i535VRLG1
Thanks In advance
i called Verizon and they said it may be the sim card thats damaged. if that were the case wouldnt voice and text fail as well?
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I'm having the same issues recently. I've always gotten a 4G signal at my house (albeit not the strongest one) but lately, my phone will not hold on to the connection. When coming off of wifi, my phone will not acquire a data connection at all most of the time. I can still send/receive texts and calls but there is no 4G or 3G icon, no MMS, and no data. I have to toggle the radios on/off, or change from CDMA/LTE to Global (or GSM) and back, put in airplane mode, or restart.....there is no guarantee any one of those steps will work. Sometimes I have to do it repeatedly until I get my data connection back but it is only temporary.
I'm on the i535VRBMF1 baseband and updated to the ML1 modem to try and resolve but to no avail. I have replaced my sim card (as I initially though that was the issue) but it has not helped either.
The only thing I can think of is that my PRL may have been updated (it is currently 15310) and it's causing issues with the towers in my area.
I just got back from Hawaii and was also in San Diego for a few days and had absolutely no issues. It seems to only be an issue now when I'm at my house which makes me think it is something VZW network related and nothing to do with my phone per say. It's really driving me nuts though.
BTW, I'm in Southern California (Irvine).

I seemed to have fixed the issue by reverting the baseband back to vrlf2. I had to switch from global to 4g/LTE because I vegan to inch roaming charges lol. Verizon credited me and no dropped 4g signal. So I'm happy.

frunas80 said:
I seemed to have fixed the issue by reverting the baseband back to vrlf2. I had to switch from global to 4g/LTE because I vegan to inch roaming charges lol. Verizon credited me and no dropped 4g signal. So I'm happy.
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What ROM are you running? I'm just curious what the implications are of running an older baseband (from the ICS days) on a newer ROM/Kernel.

I'm running cleanrom8.1 core edition. Slightly buggy but tolerable.

I was finally able to somewhat resolve my issue so I thought I'd post in case anyone else is experiencing something similar.
By using a few different apps and testing techniques, I was finally able to deduce that my issue had to do with EHRDP hand-off with the towers in the immediate vinicity to my house. I'm not sure what VZW did to them lately but it doesn't appear to be a problem in other locations so it seems like the issue is on their end (and not something to do with my phone).
In any case, it seems that when my 4G connection is weak and EHRDP is detected, it is dropping the connection entirely instead of handing if off to 3G (EVDO). The connection is also never transferred back when a 4G signal is detected either until I reset the connection where there is a moderate 4G signal.
Again, this only seems to be an issue when connected to the towers near my house and doesn't occur when traveling abroad.
To fix this, I have disabled EHRDP by doing the following:
1) Open the dialer and type *#97328640#
2) Select "[2] CDMA"
3) Select "[2] Data"
4) Select "[7] eHRPD e/disable"
5) Select "[2] Disable(*)"
6) Reboot the phone
Now my phone switches between EVDO revA. for 3G (using the native protocols) and LTE rather than relying on the broken eHRDP protocols. This workaround will have to suffice until VZW fixes stuff in my area but at least I don't miss MMS messages anymore.
Hope this helps anyone running into similar situations.