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Data connection dropped for no reason

This is starting to bug me..... for no reason the 4g connection and even when I turn off the mobile network, wait a few minutes and turn it back on, it still wont work until I reboot the phone. Sometimes rebooting it doesn't work and I have to pull the battery.
Anyone know whats causing this? When this is happening I see the ^ arrow on the 4g connection lit up like a christmas tree but nothing is uploading and theres no data connection....... HELP!

Mine dropped Last night for the first time. When I first got the phone it flip from 3g to 4g at my job. Last night finally went dead. I rebooted and still no network. Then I used the new LTE switch to keep it @3g only. It worked.
Sent from my ADR6400L using XDA Premium App

reg83ny said:
Mine dropped Last night for the first time. When I first got the phone it flip from 3g to 4g at my job. Last night finally went dead. I rebooted and still no network. Then I used the new LTE switch to keep it @3g only. It worked.
Sent from my ADR6400L using XDA Premium App
Click to expand...
Click to collapse
Where do you get the LTE switch?
I have seen it step down to 3g and back up to 4g LTE but its just sometimes 4g just chokes for no reason......

Surprise u didn't hear about it. Its a free app. If it was a paid app it would sell like hot bread. Check the market. I can't post a link yet since I'm brand new to the site
Sent from my ADR6400L using XDA Premium App

same issue with mine in Denver

You also go to your dialer and type in *#*#4636#*#* to get to the menu.

same issue here Philadelphia sub
when i bought the phone, it is very easy to get 4G in my home and work
and recently, I only can get 3G in home and 1x in work.
and it is not stable, very easy to drop.

Yea sometimes 4g just hangs and it wont step down to 3g...... forcing me to reboot or hard reset .....

stoneskin2 said:
same issue here Philadelphia sub
when i bought the phone, it is very easy to get 4G in my home and work
and recently, I only can get 3G in home and 1x in work.
and it is not stable, very easy to drop.
Click to expand...
Click to collapse
Hey Stoneskin,
I live in Hawaii and I have the very same issue as well. I picked up 4g easily in the "so called" extended 4g coverage region when I first got the TB. Then about the middle of last week, poof, no more 4g except for in the true 4g areas. My thought is because so many people were having 4g connectivity issues in these extended area, VZW simply stopped allowing it as a troubleshooting measure that apparently is still going on. I brought this up to VZW tech support and they were clueless as usual. I also posted in the VZW Community Forum hoping to get an answer, but none thus far.

you could try dialing ##778# and pressing send, select edit mode, password is 000000 and then under modem settings change it to rev A. then press the menu button to save and reboot. it has helped me out in the El paso area. friend showed it to me the other day Far as i can tell is that it disables the new network that allows voice and data at the same time since that's the only difference i have noticed other than not loosing my connection anymore. I just a heads up this does not work on the latest version of virus rom RC1B3 sensless but did with previous version and several other roms i had tried

thetwiztidfreak said:
you could try dialing ##778# and pressing send, select edit mode, password is 000000 and then under modem settings change it to rev A. then press the menu button to save and reboot. it has helped me out in the El paso area. friend showed it to me the other day Far as i can tell is that it disables the new network that allows voice and data at the same time since that's the only difference i have noticed other than not loosing my connection anymore. I just a heads up this does not work on the latest version of virus rom RC1B3 sensless but did with previous version and several other roms i had tried
Click to expand...
Click to collapse
Thanks for the tip, but it didn't work. VZW must have changed something to where extended coverage area no longer get 4g. Only those in true 4g areas. I really think this has a lot to do with the folks experiencing the constant drop 4g issues. They must have rationalized that if the extended area for 4g is not up to par and forcing 3g would be better. Only way I can explain it. From consistent 4g to only 3g. I sure miss the speeds.

[Q] Unlocking Question

I have requested my unlock code from T-Mobile. I have my Straight Talk SIM card ready to go. Now, my question is:
Does having Root and/or custom roms affect the process of unlocking a device?
I just want to make sure ahead of time so I can make the process as smooth as possible. Thanks in advance!

I believe you just need to be on a stock ROM, then it'll always be "activated" no matter what you flash.

So root makes no difference?

Doesn't make a difference.
Sent from my LG-P999 using XDA

OK thanks!!!

You must unlock in stock, but once you do, you are free to root away.
Sent from my LG-P999 using Tapatalk 2

Being rooted and running a custom rom doesn't matter... I have unlocked two of mine one running Weapons and the other running Hellfire Sandwich 1.7 (dirty) and they both unlocked fine
Sent from my $40 Sensation XE with Beats Audio

Well I ended up having to flash a stock rom to get it to work, but my phone is unlocked. which led me to a weird question:
I put my friends Straight Talk sim card in my phone to be sure it was working, and the phone had service and data on it right away. I was able to make phone calls, surf the web, send texts (I didn't test out the MMS). I thought adjust the APN settings was a must for all that stuff to work...? I didn't change a thing. But then it got me curious as to what my APN settings actually were. But when I went to click on the APN button under settings>mobile networks, I get the horrible "Unfortunately the process com.android.phone has stopped" error. I haven't seen that since I stopped using Wifi calling. Now it looks like I can't change my APN if the need arises. Anyone know of a loop hole to this?

Does 3g/hspa work for you sorry to change subject but can't find info on this subject I'm thinking of moving to this phone from the thrill 4G but in afraid my straight talk Sim won't connect 3g since it's TMobile phone and straight talk is Att towers to best of my knowledge
Sent from my LG-P920 using XDA

Straight talk runs on a variety of frequencies from its parent companies depending on what device you have. AT&T devices are equipped for Straight Talk's 3G network because they operate on the frequencies. T-Mobile devices operate slightly differently. However, adjusting the APN settings correctly to transmit date via AT&T's service is supposed to to more or less resolve the issue. Unfortunately I can't seem to do that. It may be something to do with the rom I'm using, but I'm not sure. I'll have to text it out.

that would be awesome I'll keep checking back to see your results
Sent from my LG-P920 using XDA

If straight Talk uses Att's 3g frequencies then you won have 3g on this phone. This phone does not have the proper radio frequency for it.
Edit: look at my answer in your other post.
Sent from my LG-P999 using XDA

verizon 4g radio

hi has anyonr else eperiance this same issue. whenever I go to an area that has little signal or turn the wifi off and on my phone resets to 3g. I have to keep going into the apn settings and change it from EHRPD to 4GLTE and then restart my phone. I cant change any of the settings oe delete extra APN's so I posted a screenshot and im hoping someone can help me out. Thanks
Sent from my SCH-I535 using xda app-developers app

plasmasnakeusa said:
hi has anyonr else eperiance this same issue. whenever I go to an area that has little signal or turn the wifi off and on my phone resets to 3g. I have to keep going into the apn settings and change it from EHRPD to 4GLTE and then restart my phone. I cant change any of the settings oe delete extra APN's so I posted a screenshot and im hoping someone can help me out. Thanks
Sent from my SCH-I535 using xda app-developers app
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not that it helps much, but this is an issue seeming to affect alot of us. I havent been able to correct it yet however. If I find anything out I'll post it.

Just put on airplane mode and turn it back off. Boom your done.
Sent from my SCH-I535 using xda premium

Is that an app you use to change those settings or is that buried somewhere?
Sent from my SCH-I535 using xda app-developers app

I just checked as I haven't seen it yet either. Settings, More settings, mobile network, access point names
Kind of cool. Mine showed the first option chosen but it hope between 3G and 4G as usual. Choosing LTE made no difference for me. I have virtually no 4g signal where I love
Sent from my SCH-I535

xceebeex said:
Is that an app you use to change those settings or is that buried somewhere?
Sent from my SCH-I535 using xda app-developers app
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Click to collapse
Airplane mode is a feature of the phone and turns off all radios. You can hold the power button and choose airplane mode or use the quick toggle in the notification window. Since it sounds like you may be in an area with weak 4G, you can also use an app called Phone Info to set it to CDMA auto (PRL) under Device Information. You can also change it back to LTE/CDMA/EvDO if you want it to switch as normal.

With the Verizon S3, is there the need to do *228 (or *22899) ? I did this every so often on my old HTC Incredible.

frankybeenz said:
With the Verizon S3, is there the need to do *228 (or *22899) ? I did this every so often on my old HTC Incredible.
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Doesn't work on LTE devices. A reboot essentially does the same thing. Some have recommended pulling the battery with the phone on, removing the sim card for about 30sec and then putting everything back in.

Thanks, I know what airplane mode is, wasn't sure where the APN setting was. I will look in to phone info though.
Sent from my SCH-I535 using xda app-developers app

Are you guys also experiencing the "No Sim Card" and "No Network Connection" issues?
Or is this an entirely different issue?

When this phone goes to 3g, it does seem extra bad on how long it takes to switch back to 4g. i have areas where i live where it goes to 3g when going in between hill (less than a 50 foot stretch) and it will not go back to 4g for over 10 minutes if i dont manually do it. Not to mention my LTE never goes above 10 mbps on the best days

Somewhat related...If you use Anycut to create a shortcut to IOTHiddenMenu, enter the ##DATA# Menu, edit. Under "Advanced", there is an LTE toggle, under "Other" > "HDR/1X" you can set the phone mode, and then under "Other" > "LTE APN Settings" you can somewhat modify the APN settings, reset and discard. If it asks for a password, it's 000000.

I gave these a try. I'm trying to find a way for my phone to favor 4G when there's a 4G signal, no matter how weak.
Yesterday I did a test, 3G with 3 bars vs 4G with 0 to 1 and 4G had consistently faster download speeds and shorter ping times. The upload varied from similar to 3G to slower.
Sent from my SCH-I535

Josolanes said:
I gave these a try. I'm trying to find a way for my phone to favor 4G when there's a 4G signal, no matter how weak.
Yesterday I did a test, 3G with 3 bars vs 4G with 0 to 1 and 4G had consistently faster download speeds and shorter ping times. The upload varied from similar to 3G to slower.
Sent from my SCH-I535
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probably easier said than done. The phone info app can force LTE but you lose voice and text.

Ya I found that out yesterday when testing speeds. I went to send a text then make a call and no luck
Otherwise 4G service where I live could be excellent at one spot then a mile away no service. If I had excellent 4G consistently I'd consider GoSMS which I believe has the option for data text and also a separate VoIP app
Ah well hopefully something will be figured out eventually. With a strong 4G signal 4G is considerably faster and more consistent than my 20mbps home broadband
Sent from my SCH-I535

send it back
I've had similar issues with my network. I had no 4G in 4G areas, but mainly my wifi would disconnect randomly and 3G also dropped to 1X a lot. I ended up having to send it back and get another one. So far no issues. Also the new ones have an "Updated" sticker on them. I think it was just a software update they applied, but I never got the OTA on my old phone.

lefos123 said:
I've had similar issues with my network. I had no 4G in 4G areas, but mainly my wifi would disconnect randomly and 3G also dropped to 1X a lot. I ended up having to send it back and get another one. So far no issues. Also the new ones have an "Updated" sticker on them. I think it was just a software update they applied, but I never got the OTA on my old phone.
Click to expand...
Click to collapse
Your new phone came with an already updated firmware version I535VRALG1 instead of the original version I535VRALF2.

lefos123 said:
I've had similar issues with my network. I had no 4G in 4G areas, but mainly my wifi would disconnect randomly and 3G also dropped to 1X a lot. I ended up having to send it back and get another one. So far no issues. Also the new ones have an "Updated" sticker on them. I think it was just a software update they applied, but I never got the OTA on my old phone.
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Click to collapse
I'm having the same issue with my second replacement phone... My first one was replaced for an entirely different issue (loose home button).
Did you get the "No Sim Card" notification and "No Network Connection" message?
I think I might have to return this one as well...

PJnc284 said:
probably easier said than done. The phone info app can force LTE but you lose voice and text.
Click to expand...
Click to collapse
Not sure if anyone will have the same luck I have with the "Phone Info" app, but with it I was able to get my 4g service back and my phone is functioning normally again. Just open the app, select Device Information and scroll down to "Set preferred network type" and select "LTE/CDMA/EvDo" then get out of the app.. 4g should return shortly there after. When I looked at it, my device was set to "GSM/CDMA auto (PRL)"

[Q] [HELP] Galaxy S3 Problems

Hello,
I have a Verizon Samsung Galaxy S3. I have rooted it about a month ago, and just yesterday switched to the AOKP rom. Everything was working well, except I have run into a couple issues.
1. Won't connect to 4G. I have a 4G data plan, and when I am out somewhere, it won't connect to 4G. Anyone know what to do?
2. I can send picture messages, but when I get them, it says "Download". I click Download, and it just loads with 0% and won't download them.
The biggest issue is the data plan not working, so I really need help with that. Thanks to whoever can help! Majorly appreciated!
-John

Can anyone help? I'm leaving for a trip soon and really need it fixed.

What modem are you running? I had data problems too until I upgraded my modem. I can't post a link yet because of my post count but if you google "verizon galaxy s3 modem" you'll find download links to flashable modems. I'm currently getting the best results with I535VRLK3 in my area. You'll just have to see which one works the best for you personally.

Also check what network you're on (I'm on a TW rom right now, so this might not be the right place to look, but... )
Settings - Wireless and Network - More Settings - Mobile Network. Make sure you're on CDMA/LTE
Sent from my SCH-I535 using xda app-developers app

Also in Access Point Names make sure that you have LTE selected and not EHRPD. Some time it auto switches from LTE to EHRPD. If you notice that you are mostly in 3G it probably switched from LTE to EHRPD, at least that is my experience
Sent from my SCH-I535 using xda app-developers app

no 4g - what gives?

I just got 2 refurbs and neither of them will connect to 4g on my sim (verizon). 3g works fine.
they both updated to vrbmf1 and keep oscillating between 2,4,8 asu while my gnex right next to it is at 43asu.
tried all combinations of settings in mobile networks (mode, apn, roaming, blah). the same sim in the nexus is no problem. tried a different sim, same thing. any idea what incredibly simple thing i am missing here?

k.electron said:
I just got 2 refurbs and neither of them will connect to 4g on my sim (verizon). 3g works fine.
they both updated to vrbmf1 and keep oscillating between 2,4,8 asu while my gnex right next to it is at 43asu.
tried all combinations of settings in mobile networks (mode, apn, roaming, blah). the same sim in the nexus is no problem. tried a different sim, same thing. any idea what incredibly simple thing i am missing here?
Click to expand...
Click to collapse
Ensure this is set correctly.. Settings > Wireless and Networks > More > Mobile Networks > Data Enabled is checked. Network Mode: LTE/CDMA/EVDO. System Select: Automatic. CDMA Subscription: RUIM/Sim.. Other than that, You perhaps have bad hardware, a bad sim card, or sit in a very fringe 4G area. Perhaps try flashing a different modem or contacting verizon to see how strong your 4G area is and what your options are.
Note: This is AOSP, so some digging may be needed if on Stock/Touchwiz.
Sent from my SCH-I535 using xda app-developers app

Deliquified said:
Ensure this is set correctly.. Settings > Wireless and Networks > More > Mobile Networks > Data Enabled is checked. Network Mode: LTE/CDMA/EVDO. System Select: Automatic. CDMA Subscription: RUIM/Sim.. Other than that, You perhaps have bad hardware, a bad sim card, or sit in a very fringe 4G area. Perhaps try flashing a different modem or contacting verizon to see how strong your 4G area is and what your options are.
Note: This is AOSP, so some digging may be needed if on Stock/Touchwiz.
Sent from my SCH-I535 using xda app-developers app
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Click to collapse
tried stock/aosp with multiple basebands on both. On the nexus i get -68dbm with either sim and 20+mbps on 4g consistently. my house never downgrades to 3g at all. its in the middle of a 4g area. on aosp i checked to make sure the option was ruim/sim.
one theory is that the sims are really worn out on the contacts and the gnex just has a springier reader that connects better or they are somehow cached on the nexus - does that make any sense.
i can understand 1 of the units being bad, but 2 of them with the exact same bad behavior.... super unlikely.

k.electron said:
tried stock/aosp with multiple basebands on both. On the nexus i get -68dbm with either sim and 20+mbps on 4g consistently. my house never downgrades to 3g at all. its in the middle of a 4g area. on aosp i checked to make sure the option was ruim/sim.
one theory is that the sims are really worn out on the contacts and the gnex just has a springier reader that connects better or they are somehow cached on the nexus - does that make any sense.
i can understand 1 of the units being bad, but 2 of them with the exact same bad behavior.... super unlikely.
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I would take it into Verizon and have them troubleshoot the sim.. Perhaps you could even contact tech support and get an S4 out of the deal for the hassle.. Worth a shot.
Sent from my SCH-I535 using xda app-developers app

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kennyglass123 said:
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my apologies. havent been here in a while and was in panic mode.

Deliquified said:
I would take it into Verizon and have them troubleshoot the sim.. Perhaps you could even contact tech support and get an S4 out of the deal for the hassle.. Worth a shot.
Sent from my SCH-I535 using xda app-developers app
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would an extended battery cause this? they never gave me a battery so i just got the laza zcell extended from amazon.
going to take everything to the verizon store and have them replace sims and see what happens. i'd love to get an s4, but i dont want to lose unlimited data so will try to avoid and upgrade.

k.electron said:
would an extended battery cause this? they never gave me a battery so i just got the laza zcell extended from amazon.
going to take everything to the verizon store and have them replace sims and see what happens. i'd love to get an s4, but i dont want to lose unlimited data so will try to avoid and upgrade.
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tested with a friends stock battery, no luck.
I used this tool https://play.google.com/store/apps/details?id=com.cc.signalinfo to check the signal status. when i pop my sim in, all the lte related fields go to n/a. when i remove the sim and boot the phone i see numbers there.
looking like bad sims.... flabbergasted that both sims are bad for the s3 but good enough for the nexus.

k.electron said:
tested with a friends stock battery, no luck.
I used this tool https://play.google.com/store/apps/details?id=com.cc.signalinfo to check the signal status. when i pop my sim in, all the lte related fields go to n/a. when i remove the sim and boot the phone i see numbers there.
looking like bad sims.... flabbergasted that both sims are bad for the s3 but good enough for the nexus.
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its the sim. i put in a friends sim and it worked fine. so dumb that both my sims did this.