Develop Bugs

4g/3g data connection

It seems whenever I don't have a 4g data connection, I'm not getting any data connection. Anyone else have this problem? When I'm in builldings I never get a data connection. Even when I'm outside I rarely get data connection unless it's a 4g spot. I know someone with a GN and side by side, he gets a connection at work while I have gray bars. Is this prevelant among most of you all? I'm on Verizon if that makes a difference.

Yes, I have this issue as well when I am at work but only when I have wifi turned on. With wifi on I get no 4g connection inside the building and the phone won't drop down to 3g, just gives me gray bars and no data. Manually switching from LTE/CDMA to CDMA restores my 3g data connection. Turning wifi off enables the LTE data connection. I assume it's trying to use the building's wifi network that I am not authenticated to for some reason. It's quite annoying and seems to be draining my battery.

My 4g reception sucks. I am rather disappointed. I canceled my ATT account and paid the ETF to switch to verizon for the GN. I am in plano tx which is in the Verizon LTE area and i dont get any signal except in a few spots on the highway. I work in Richardson, which is also in the LTE area, and i dont even have 3g in the building. I dont have any signal when i go deeper into the building away from the windows. I am running stock 4.0.2. I hope this gets better. I am already regretting dropping ATT.

jason.hamilton said:
My 4g reception sucks. I am rather disappointed. I canceled my ATT account and paid the ETF to switch to verizon for the GN. I am in plano tx which is in the Verizon LTE area and i dont get any signal except in a few spots on the highway. I work in Richardson, which is also in the LTE area, and i dont even have 3g in the building. I dont have any signal when i go deeper into the building away from the windows. I am running stock 4.0.2. I hope this gets better. I am already regretting dropping ATT.
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Click to collapse
Strange. I have excellent 3G and 4G signal in buildings, coming from Sprint I had non-existent data everywhere, especially indoors.

Just as an fyi. I went to Verizon to try to get a new phone. They told me my sim card was bad. I got the phone on the first day and they said they had issues with the first sim cards with the nexus. My wifes has the same problem.
New sim card, NO MORE connection issues. Yeah! Anyone else who has this issue might try this. I am now getting 3g and even 4g connections inside now.

ill go to the verizon store after work and switch sims. Just got it on 1/1. Ill go to a different verizon store to make sure its not a bad batch lol.

Wasnt the SIM card. Still getting crappy signal strength. I am going today and replacing the phone. If that doesnt work, i am going back to ATT skyrocket...

spencer88 said:
Strange. I have excellent 3G and 4G signal in buildings, coming from Sprint I had non-existent data everywhere, especially indoors.
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In my office I get very weak to no 4G signal, so that the phone is constantly switching from weak 4G down to 3G and causing connection disruptions. I usually just disable LTE and use CDMA only mode to fix this. I have heard that a LTE signal should penetrate inside of buildings better, but apparently my workplace is almost impenetrable. We have a Verizon 3G repeater in the office or I would get no usable signal at all.
Spencer, what kind of speeds are you getting with LTE in the Columbia area? It seems like I got better speeds when I had my Rezound than I'm getting with my Galaxy Nexus.

jason.hamilton said:
My 4g reception sucks. I am rather disappointed. I canceled my ATT account and paid the ETF to switch to verizon for the GN. I am in plano tx which is in the Verizon LTE area and i dont get any signal except in a few spots on the highway. I work in Richardson, which is also in the LTE area, and i dont even have 3g in the building. I dont have any signal when i go deeper into the building away from the windows. I am running stock 4.0.2. I hope this gets better. I am already regretting dropping ATT.
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Click to collapse
I've had the exact opposite experience in Dallas. I switched from AT&T a year ago. I couldn't even make calls in my house. (I live in Lakewood) I had to go upstairs or outside. As far as data goes even on just 3G the Verizon speeds are much faster. I've done quite a few AT&T vs Verizon 3G side by side tests and Verzion has won every time. 4G is just a bonus for me. When I get a 4G signal there is no comparison. My coworker and I did a speed test on Tuesday at DFW. His iPhone 4s on AT&T vs my Gnex. I was getting 10-15 mbits down and he was getting like 2-3

3G Data
I am having the same exact problem. I thought it was related to airplane mode, I have it turning on at midnight and off at 6am. In the morning, if there is no Wifi and the phone is in 3G, I can't get data. Restarting gets data back, but I'm looking for a more elegant solution than that.

I'm having HUGE data issues, see:
http://forum.xda-developers.com/showthread.php?t=1421440

just a quick question. are you guys running custom ROMs/kernels? if so, please add that in your post.

none at all here.

4g and no network

4g just started popping up on my phone, but every time it does, I have no network access. Is this a phone issue or Sprint just testing out new towers?
Lte turned off for now. Problem solved.

babyschmoof said:
4g just started popping up on my phone, but every time it does, I have no network access. Is this a phone issue or Sprint just testing out new towers?
Lte turned off for now. Problem solved.
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Click to collapse
It happens to me once in awhile. I will connect to the LTE network but no data. After a min or two it switches back to 3G. The LTE networks are up around me, but I don't think the upgrade is 100% complete. I'm thinking its a Sprint issue.
Sent from my Freeza MD4 Stock Rooted Galaxy S3

TheSocalGuy79 said:
It happens to me once in awhile. I will connect to the LTE network but no data. After a min or two it switches back to 3G. The LTE networks are up around me, but I don't think the upgrade is 100% complete. I'm thinking its a Sprint issue.
Sent from my Freeza MD4 Stock Rooted Galaxy S3
Click to expand...
Click to collapse
It happens to me right outside my house... I get 1 bar of LTE service, but no data. I know they have been updated the network around me and chalk it up to that. I just toggle off LTE or hop on my Wifi.

babyschmoof said:
4g just started popping up on my phone, but every time it does, I have no network access. Is this a phone issue or Sprint just testing out new towers?
Lte turned off for now. Problem solved.
Click to expand...
Click to collapse
From the sounds of it, Sprint is adding 4g to your area. They generally start out in the rural areas and make their way inward. You could be on the boundary and we'll continue to get intermittent signals until the get enough work done to get s stronger signal. Hang in there, it gets better.
Sent from my SPH-L710 using Tapatalk 2

[Q] Need help on signal and 4g/lte

Hey guys,
I was just told that tmobile has launched lte in our area, Dallas tx(not sure). At the time I was trying to flash the latest custom roms, I got a problem.
My case is on modem UVBMD1 rom Jedi x14, I have 4g 15mps down and 3mps up, but only 2 bar signal
Modem UVBMD1 rom Jedi master 14, I have 4glte 22mps down and 3mps up, still 2 bar signal
Modem UVBMD1 rom original odexed-rooted, I have 4g 8mps down and 1mps up, full bar signal.
I do not understand why it has so many different speeds on the same modem and same android 4.1.2. Still not sure if anyone in Dallas has real LTE already.
Thanks guys.

Update,
Trying several different setting, realized that when the network option set to automatic 2g/3g/4g, it has full bar signal and 8mps down. When it was set to automatic 2g/3G/4g/lte, it has only two bars and 23mps down. Does it mean there is something wrong with the modem?

bloodloon said:
Update,
Trying several different setting, realized that when the network option set to automatic 2g/3g/4g, it has full bar signal and 8mps down. When it was set to automatic 2g/3G/4g/lte, it has only two bars and 23mps down. Does it mean there is something wrong with the modem?
Click to expand...
Click to collapse
Im in Dallas, Have a Nexus 4, Note 2, HTC One.
I can tell you that on my stock Note 2 LTE will give me a solid connection but a low signal strength indication. So 1-3 bars. But i can still pull down 20-30 megs down. Since im on stock its 4G LTE icon and not just 4G.
When your getting the full bars at 8 megs your on the HSDPA+ network. When your getting 23 down with 1-2 bars your on LTE.
Id suggest getting the app SignalCheck Pro.
https://play.google.com/store/apps/details?id=com.blueline.signalcheck&feature=search_result#?t=W251bGwsMSwyLDEsImNvbS5ibHVlbGluZS5zaWduYWxjaGVjayJd
I have used this app many times to check my signal strength and to also let me know when im connected to LTE while im driving around.

IAmSixNine said:
Im in Dallas, Have a Nexus 4, Note 2, HTC One.
I can tell you that on my stock Note 2 LTE will give me a solid connection but a low signal strength indication. So 1-3 bars. But i can still pull down 20-30 megs down. Since im on stock its 4G LTE icon and not just 4G.
When your getting the full bars at 8 megs your on the HSDPA+ network. When your getting 23 down with 1-2 bars your on LTE.
Id suggest getting the app SignalCheck Pro.
https://play.google.com/store/apps/details?id=com.blueline.signalcheck&feature=search_result#?t=W251bGwsMSwyLDEsImNvbS5ibHVlbGluZS5zaWduYWxjaGVjayJd
I have used this app many times to check my signal strength and to also let me know when im connected to LTE while im driving around.
Click to expand...
Click to collapse
I guess tmobile should release a new version of modem to fix this problem. So sad that you have the same issue. But still enjoy the 22mps down. Thanks dude.

I think we can all expect signal-strength fluctuations, changing availability in types of service, and general wonkiness for at least the next month or so while TM finishes rolling out LTE in the various markets. It's not like they just flip the switch and it's all set - they have to test and tweak.

bloodloon said:
I guess tmobile should release a new version of modem to fix this problem. So sad that you have the same issue. But still enjoy the 22mps down. Thanks dude.
Click to expand...
Click to collapse
Software updates take time.
Problems have to be reported by the masses, then the manufacturer has to try to fix, then it goes to the carrier for approval and small groups of beta testers, then out to the masses.
The good news is, with small system updates like radio firmware, modems and stuff, those do push out much faster then major updates. BUT sometimes they want to put them in with major updates.

bloodloon said:
Hey guys,
I do not understand why it has so many different speeds on the same modem and same android 4.1.2. Still not sure if anyone in Dallas has real LTE already.
Thanks guys.
Click to expand...
Click to collapse
Tweaks, init.d mods, etc.... also varies from interference, congestion. Not sure what your entire claim is that tmobile needs to fix but its seems to make little sense as there is no REAL issue just different speeds based on tests that have multiple variables.

Im in Dallas, as i stated in my other post. Ive been getting solid LTE at Home, Old East Dallas and at work. NE Dallas near NW HWY and Skillman.
Ive had solid LTE since they flipped the switch the night of the 16th of June.
Thats on my Note 2, Nexus 4, HTC One.
I have also driven thru parts of Dallas that still give me 4G which is HSDPA+. While they are still working on it i can tell you from first hand experience this is going way better then the Sprint roll out of LTE. I was with Sprint for 11 years and left them in January for T-Mobile. What a nightmare that was.
Anyway, to answer your question about LTE in Dallas its a Yes for me.

I'm in Columbus Ohio and I had to remove the automatic lte/4g/3g/e they seem to be testing lte here. When data is accessed it works breiefly then drops all the way down to no signal. ...then sits at E...then to 4G...then if I don't use my phone....it goes up.....to lte...so I just removed it from searching for lte....now my 4g speed is consistant...until lte is stagnant stable and live...im good
Sent from my SGH-T889 using Tapatalk 4 Beta

IAmSixNine said:
Im in Dallas, Have a Nexus 4, Note 2, HTC One.
I can tell you that on my stock Note 2 LTE will give me a solid connection but a low signal strength indication. So 1-3 bars. But i can still pull down 20-30 megs down. Since im on stock its 4G LTE icon and not just 4G.
When your getting the full bars at 8 megs your on the HSDPA+ network. When your getting 23 down with 1-2 bars your on LTE.
Id suggest getting the app SignalCheck Pro.
https://play.google.com/store/apps/details?id=com.blueline.signalcheck&feature=search_result#?t=W251bGwsMSwyLDEsImNvbS5ibHVlbGluZS5zaWduYWxjaGVjayJd
I have used this app many times to check my signal strength and to also let me know when im connected to LTE while im driving around.
Click to expand...
Click to collapse
Thanks for this information, I thought it was only me. Good to see that there's nothing to worry about!

[HELP] Still having signal issues

I'm on virgin 3.1.2 and I'm still habit the same issues. When I turn my screen back on after letting the phone sit for an hour I start getting every notification that should have came in when the screen was off. My phone says im on mk2 modem but I still only have 2 bars of lte like like I had on MDL. Also my bootloader says write protection enabled, is this stopping me from. Getting my modem flashed correctly?
Sent from my GT-I9505G using Tapatalk

PostMeridianLyf said:
I'm on virgin 3.1.2 and I'm still habit the same issues. When I turn my screen back on after letting the phone sit for an hour I start getting every notification that should have came in when the screen was off. My phone says im on mk2 modem but I still only have 2 bars of lte like like I had on MDL. Also my bootloader says write protection enabled, is this stopping me from. Getting my modem flashed correctly?
Sent from my GT-I9505G using Tapatalk
Click to expand...
Click to collapse
Flashing of MDL wont magically make your signal better. Might help with consistency and other things, but it won't make your bars go up. With the new TW update on 4.4.2 samsung has manipulated the signal to make it look better, but you're not actually getting a better LTE signal, it's just telling you the bars of your HSPA signal to make it look better. As far as the MK2 vs MDL modem, it wont make your LTE signal boost either, it will just make your signal not drop so often. Signal has more to do with the tower distance and type of frequency its using than software on the phone. Hope this clears a couple things up for ya.

I get good speeds, just always only shows 2 bars. Sometimes I will watch it go from lte to 4g then 3g then the signals dissappear and I lose all signal for a few seconds. Then it comes back to lte.
Not worried about it now , tmobile sent me a replacement phone and even on stock it has the same signal.
Sent from my SGH-M919 using Tapatalk

Harmtan2 said:
With the new TW update on 4.4.2 samsung has manipulated the signal to make it look better, but you're not actually getting a better LTE signal, it's just telling you the bars of your HSPA signal to make it look better.
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Click to collapse
I don't think its showing the hspa signal, I've had 3 hspa phones in about as many years and the number of bars showing is not the same like my other phones.. I'm not saying they didn't manipulate it because I tested it and compared dBm signal strength when i first updated to KK and its the same as I've always gotten, it just reports higher bars, my s3 shows 3 bars, my s4 5 bars, both on hspa and same exact dBm signal
Sent from my SGH-M919 using Tapatalk

serio22 said:
I don't think its showing the hspa signal, I've had 3 hspa phones in about as many years and the number of bars showing is not the same like my other phones.. I'm not saying they didn't manipulate it because I tested it and compared dBm signal strength when i first updated to KK and its the same as I've always gotten, it just reports higher bars, my s3 shows 3 bars, my s4 5 bars, both on hspa and same exact dBm signal
Sent from my SGH-M919 using Tapatalk
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Click to collapse
Depends on which HSPA signal it's reading. Sammy may have programmed it to read the 1900 signal rather than the 1700 signal which will report higher signal strength. I've compared the bars of one of the phones in the local store here in town, and the bars of the hspa coresponded with the dbm on the other phone when I forced it into wcdma only mode.

(Q) LTE

Is anyone experiencing LTE problems? I have great Spark signal in my area, but this phone seems to go to 3g all the time. My other phones are always on LTE, so obviously coverage is not the issue here. I will unroot thru Odin and see if it's a root problem.

ajr0312 said:
Is anyone experiencing LTE problems? I have great Spark signal in my area, but this phone seems to go to 3g all the time. My other phones are always on LTE, so obviously coverage is not the issue here. I will unroot thru Odin and see if it's a root problem.
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Click to collapse
Not a root problem. Weird part is it only seems to happen to me in areas where there is really strong 4g, like in my house. At work, I am on a weaker 4g signal all day long without issues.

Try updating your profile and prl. Also make sure you have CDMA/LTE selected under mobile network.

ajr0312 said:
Is anyone experiencing LTE problems? I have great Spark signal in my area, but this phone seems to go to 3g all the time. My other phones are always on LTE, so obviously coverage is not the issue here. I will unroot thru Odin and see if it's a root problem.
Click to expand...
Click to collapse
I have the same problem. It keeps dropping my signal to 3g..even when it's on 3g sometimes it loses the 3g signal and reconnects to 3g.. the areas I go always have band 41 ...my previous phone was the nexus 5 and the signal was great...never drops connection like this...I thought it was only my phone as I haven't seen someone with the same problem in the forums. I'm in nyc area

Hopefully there is fix soon, it's very annoying to have this data issues.

Its not just your phone mine does the same thing at my work. I switch between multiple different band 25 26 and 41 towers as well as 3G towers. It occurs while the phone just sits on my desk. Theres a couple other threads discussing this. To my knowledge no one has any usable suggestions to help with this.
Sent from my SM-N910P using XDA Free mobile app

dmisselh said:
Its not just your phone mine does the same thing at my work. I switch between multiple different band 25 26 and 41 towers as well as 3G towers. It occurs while the phone just sits on my desk. Theres a couple other threads discussing this. To my knowledge no one has any usable suggestions to help with this.
Sent from my SM-N910P using XDA Free mobile app
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Click to collapse
My Note 4 does the exact same thing. I'm in a fully covered spark area, my old s4 always connected to lte with about 10 meg download. Awesome data offensive note 4 gets 3 to 5 meg download.. sometimes only getting 0.01 upload speed. That's the only thing that consistently bothers me about this phone. Oh yea it also constantly drops lte... to 3g. Feels like it's data is going through a dial up modem. I'm going to check the Sprint forums and see if I can find any good info.

Happened once in one place i was. Lower LTE signal and the phone kept dropping it and falling back to 3g, while my gf Lg G2 kept the LTE connection. I'm thinking they need to tweak the radio software in a future update.
Sent from my SM-N910P using Tapatalk

I've noticed that all the TriBand devices (Anything with Spark) switch to 3G for a bit then connect back to LTE/Spark. I haven't heard anything from work about this issue yet. I've also noticed its areas that have low Spark signal and high LTE signal.

My guess is it's a handoff problem. I will see all bars but LTE grayed out while riding the metro.

There is another thread touching on this too....I am having terrible LTE connection. My wife, who is an iPhone 6 user, gets 4 bars (or circles? lol) of LTE while I can sit next to her with 0-1 bars LTE or 3 bars 3G. I love this phone too much to complain alot about this but I am confident Sprint/Samsung will release an update to fix this.

The exact same problem occurred when the LG G2 got the spark update. It took 8 months for sprint to issues update that was specific to the LTE problem. I had to factory wipe before and after the update to get it to stick. The only difference is before the G2 was updated a toggle to airplane mode would bring the LTE back. That trick does not work on this phone. I will also add I drive alot at my job 6 hours plus a day. I go to the same spots to do paperwork in my truck. My Note 4 will not stay on LTE/Spark in locations where my G2 had a constant 10-15mbps connection.