Database Develop

[Q] AT&T 3G signal fluctuates

Just curious on other peoples opinion/theory.
So while using my HTC One on AT&T the 3G signal jumps around. I assume its two towers one obviously being farther away and the phone doesn't seem to stick with the one that's closer. So if i force the phone to connect to WCDMA (3G/HSPA) no celluar service works on the device. Eventually I switch it back to 2G and then it starts receiving calls/sms etc. I have been to locations in the area where there are full bars of 3G constantly yet the phone fails to connect properly eventually I give up and switch to 2G at some points the phone drops down to GPRS.
On an international HTC 8X it maintains a strong connection to 3G/H+ using the same simcard. Only thing that has changed is the actual device. I've tried literally all the radios available for the HTC one and all have the same result.
If using a T-Mobile simcard and I go into an area that has been refarmed I pick their 3G/H+ just fine.
So it's not the simcard and its not the phone. I've called AT&T and all they do is make me turn off the phone while they resend the signal from the tower (so they say) then thats when the phones sticks to 3G and functions correctly but eventually it stops working and returns to how it was.
Right now AT&T offers the stronger call/sms coverage while T-Mobile doesn't so I'd rather stick with AT&T even if they suck.
So my question is.
Anyone else experiencing or has had this issue before on the HTC one or another device? If those who have had this was it resolved?
Was it a simple device exchange or were you bumped up the change of tech support eventually reaching some one who knew how to fix the issue or atlease gave more then "Please turn the device on/off, it will fix all your problems"

[Q] Force phone to stick to low signal LTE rather than switching to 3g?

Hey guys
So I looked around the forum for an answer to this question and i found similar topics but not exactly what I was looking for. I have the HTC one with sprint and the only issue I have with it is how it handles its preferred networks. If have 2 bars of LTE but 4-5 bars of 3g its going to stay on 3g and not switch to LTE. Is there anyway to change how it gives each signal preference. Currently it will wait till there is no 3g signal before it switches to 2g but LTE is not giving the same preference. I know it's just this phone because I had the iphone 5 before this and when I was on campus at my university it would stick to the 1 bar of LTE i had rather than switching to 3g. If I force the phone in LTE only mode then it will pick the LTE signal but then I can't call and text obviously so it's not very useful.
There are two things that the iphone 5 did which I miss but otherwise love this phone. One is getting LTE in places that has low coverage and the other is roaming on verizon network on 3g. The iphone would always roam on 3g but the htc one only roams on 2g.
Is there a way to change those things with this phone? Thanks in advance!

onelight17 said:
Hey guys
So I looked around the forum for an answer to this question and i found similar topics but not exactly what I was looking for. I have the HTC one with sprint and the only issue I have with it is how it handles its preferred networks. If have 2 bars of LTE but 4-5 bars of 3g its going to stay on 3g and not switch to LTE. Is there anyway to change how it gives each signal preference. Currently it will wait till there is no 3g signal before it switches to 2g but LTE is not giving the same preference. I know it's just this phone because I had the iphone 5 before this and when I was on campus at my university it would stick to the 1 bar of LTE i had rather than switching to 3g. If I force the phone in LTE only mode then it will pick the LTE signal but then I can't call and text obviously so it's not very useful.
There are two things that the iphone 5 did which I miss but otherwise love this phone. One is getting LTE in places that has low coverage and the other is roaming on verizon network on 3g. The iphone would always roam on 3g but the htc one only roams on 2g.
Is there a way to change those things with this phone? Thanks in advance!
Click to expand...
Click to collapse
Have you tried changing the preferred in the *#*#4636*#*# > Phone Information?

Hi thanks for the response. Yes I have messed around with that. That's how I got the LTE only option. It isn't a matter of not finding LTE signal. It's just the way the phone handles what is perferred. The phone first sees if there is a strong LTE signal and it catches that but the moment it goes to about 3 bars or less it will switch to 3g. I want it to continue sticking with LTE until the signal is gone completely like it does with 3g -> 2g.

onelight17 said:
Hi thanks for the response. Yes I have messed around with that. That's how I got the LTE only option. It isn't a matter of not finding LTE signal. It's just the way the phone handles what is perferred. The phone first sees if there is a strong LTE signal and it catches that but the moment it goes to about 3 bars or less it will switch to 3g. I want it to continue sticking with LTE until the signal is gone completely like it does with 3g -> 2g.
Click to expand...
Click to collapse
If its that way then I belive a builder will be able to forge a flashable zip for that purpose.

Terramoto said:
If its that way then I belive a builder will be able to forge a flashable zip for that purpose.
Click to expand...
Click to collapse
I see. And who do I ask for that? Or how can I build one? Sorry I am a bit of a rookie in this. I don't want to mess around with it too much but can learn. I thought there might already be some sort of hack or a modded PRL.

any new insight on this by anyone? thanks
I have lte at my work if I do lte only but it will switch to 3g when i turn everything else one because 3g signal is stronger than lte. id rather use lte however but still have my texting and calling capabilities.

onelight17 said:
any new insight on this by anyone? thanks
I have lte at my work if I do lte only but it will switch to 3g when i turn everything else one because 3g signal is stronger than lte. id rather use lte however but still have my texting and calling capabilities.
Click to expand...
Click to collapse
I know it's not an optimal solution, but have you considered using Google Voice integration in the meantime? With LTE only mode, so long as you're signed into an app of choice (Google Voice/Hangouts should be able to handle your calls and texts if you tweak at it a bit), you should have the desired service until you can get some dev help.

[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

[Q] Shows LTE, only works for a few minutes.

My phone used to work great on LTE, but one day it showed the LTE icon, but I couldn't get it to work. If I toggle airplane mode, then wait for LTE to connect it will work for a few minutes, but then go back to showing the LTE icon but not transferring any data. The phone works fine on cdma only, but I want the strong LTE I used to have. I've been dealing with it for over a month, and other people on sprint with different phones have strong LTE that works fine. I have updated the radio, tried AOSP and sense roms, updated radios, removed and inserted the sim card, flashed an RUU back to completely stock, updated profile and PRL.
On sense roms, I would occasionally get the message "Unable to establish a wireless data connection. LTE: EMM-65535, EHRPD: 65535"
Very frustrating, as 3g speeds in my area are awful, and everyone around me can take advantage of the faster LTE signal. Anyone else having this problem? Is there a solution, or is it a hardware issue?

richyrocket said:
My phone used to work great on LTE, but one day it showed the LTE icon, but I couldn't get it to work. If I toggle airplane mode, then wait for LTE to connect it will work for a few minutes, but then go back to showing the LTE icon but not transferring any data. The phone works fine on cdma only, but I want the strong LTE I used to have. I've been dealing with it for over a month, and other people on sprint with different phones have strong LTE that works fine. I have updated the radio, tried AOSP and sense roms, updated radios, removed and inserted the sim card, flashed an RUU back to completely stock, updated profile and PRL.
On sense roms, I would occasionally get the message "Unable to establish a wireless data connection. LTE: EMM-65535, EHRPD: 65535"
Very frustrating, as 3g speeds in my area are awful, and everyone around me can take advantage of the faster LTE signal. Anyone else having this problem? Is there a solution, or is it a hardware issue?
Click to expand...
Click to collapse
Do you expericne this everywhere, or just in certain places? Are you "side by side" (i.e. in the same area) with your colleagues who have Sprint when they get LTE and you don't?
After nearly a year of strong LTE at our house, we rarely get LTE now and mostly 3G. This started about three months ago. When it first started, I only had an EVO 4G LTE, but we have also since gotten a One, and both phones behave the same. We live within 500 yards on the west side of the tower, according to SignalCheckPro. In fact, I can go outside and see the tower. When we do get LTE, SCP will sometimes indicate that the phone is connected to a tower futher away. If the phones have been inactive for awhile, they will initially show 4G, but quickly switch to 3G if we try any type network access (i.e. web, email, etc). If we go to the east side of that tower, we get strong LTE and 5-10 Mbps transfer speeds on both phones.
I reported this to Sprint a couple of months ago, and got a response that they were doing another phase of upgrades on that particular tower. I reported it again a couple of weeks ago, but got no response. There is a major retail business street on the east side of the tower, so Sprint may have re-focused the signal on the business corridor. I have also noted a couple of other towers in other areas of the city where I work that have this same highly directional behavior, and unfortnately, the places where I have to be are on the wrong side of the towers.
So, you could very well have a phone hardware issue, but it could also be Sprint. If you check other fourms, you will find similar reports of areas losing LTE after having it for some time. Which is why I asked if you can get LTE in some places, and not others. You might consider getting SignalCheckPro to see where you are in relation to the towers. IMO, Sprint's LTE network seems to be messed up in many places.

jbhtexas said:
Do you expericne this everywhere, or just in certain places? Are you "side by side" (i.e. in the same area) with your colleagues who have Sprint when they get LTE and you don't?
After nearly a year of strong LTE at our house, we rarely get LTE now and mostly 3G. This started about three months ago. When it first started, I only had an EVO 4G LTE, but we have also since gotten a One, and both phones behave the same. We live within 500 yards on the west side of the tower, according to SignalCheckPro. In fact, I can go outside and see the tower. When we do get LTE, SCP will sometimes indicate that the phone is connected to a tower futher away. If the phones have been inactive for awhile, they will initially show 4G, but quickly switch to 3G if we try any type network access (i.e. web, email, etc). If we go to the east side of that tower, we get strong LTE and 5-10 Mbps transfer speeds on both phones.
I reported this to Sprint a couple of months ago, and got a response that they were doing another phase of upgrades on that particular tower. I reported it again a couple of weeks ago, but got no response. There is a major retail business street on the east side of the tower, so Sprint may have re-focused the signal on the business corridor. I have also noted a couple of other towers in other areas of the city where I work that have this same highly directional behavior, and unfortnately, the places where I have to be are on the wrong side of the towers.
So, you could very well have a phone hardware issue, but it could also be Sprint. If you check other fourms, you will find similar reports of areas losing LTE after having it for some time. Which is why I asked if you can get LTE in some places, and not others. You might consider getting SignalCheckPro to see where you are in relation to the towers. IMO, Sprint's LTE network seems to be messed up in many places.
Click to expand...
Click to collapse
Yes, most my friends have sprint Iphone 5c's and a few android LTE Phones and live in my area. they all have strong LTE. I'm pretty sure it is a sim card/hardware issue because my phone has been completely stock and unrooted for about 2 weeks now, and the LTE Only worked for the first day. Unfortunately I got the phone on the day it was launched, so my warranty is gone. Unless there is some trick to get it to stay connected. :crying:

richyrocket said:
Yes, most my friends have sprint Iphone 5c's and a few android LTE Phones and live in my area. they all have strong LTE. I'm pretty sure it is a sim card/hardware issue because my phone has been completely stock and unrooted for about 2 weeks now, and the LTE Only worked for the first day. Unfortunately I got the phone on the day it was launched, so my warranty is gone. Unless there is some trick to get it to stay connected. :crying:
Click to expand...
Click to collapse
have you tried updating your profile and prl,

Aldo101t said:
have you tried updating your profile and prl,
Click to expand...
Click to collapse
Yes I tried updating those, and updating the radios. Just wondering, when it was new it would always say the sim card was removed when it really wasn't. Is it possible that it has a faulty sim card? I'm pretty sure the sim card is only used for LTE.

richyrocket said:
Yes I tried updating those, and updating the radios. Just wondering, when it was new it would always say the sim card was removed when it really wasn't. Is it possible that it has a faulty sim card? I'm pretty sure the sim card is only used for LTE.
Click to expand...
Click to collapse
Yeah. Some have removed the .cardcand clean it and put back in. Solved the problem??
Sent from my HTCONE using Tapatalk
Also: you might try ##72786# in dialer and reseting your network to default factory settings.
---------- Post added at 06:31 PM ---------- Previous post was at 06:24 PM ----------
Aldo101t said:
Yeah. Some have removed the .cardcand clean it and put back in. Solved the problem??
Sent from my HTCONE using Tapatalk
Also: you might try ##72786# in dialer and reseting your network to default factory settings.
Click to expand...
Click to collapse
if none of that works i'd see about getting the sim replaced

Aldo101t said:
Yeah. Some have removed the .cardcand clean it and put back in. Solved the problem??
Sent from my HTCONE using Tapatalk
Also: you might try ##72786# in dialer and reseting your network to default factory settings.
---------- Post added at 06:31 PM ---------- Previous post was at 06:24 PM ----------
if none of that works i'd see about getting the sim replaced
Click to expand...
Click to collapse
I just reset the network to factory settings, I'll try and see if it stays connected tomorrow when I go back into town where it's strong. The sim card has been removed and seems to be clean. I can't be the only one having this problem, can I?

richyrocket said:
I just reset the network to factory settings, I'll try and see if it stays connected tomorrow when I go back into town where it's strong. The sim card has been removed and seems to be clean. I can't be the only one having this problem, can I?
Click to expand...
Click to collapse
yeah there where others that had the problem too.

CDMA-Less Device on Verizon (Amazing!)

One of the great things about this device on Verizon's network is instant LTE service. In my house I have dead areas which cause my signal to drop. When trying to get LTE back it can sometimes take 30 seconds or more because once I get to an area with service it will first go to 3G and then sometimes get stuck on it and I'll have to toggle airplane mode to get LTE back in a timely manner. With the OnePlus6T as soon as I have service it goes instantly to LTE! This is the first time I've ever had a device connect to LTE so fast. All my previous devices over the past 5 years since I've had LTE in my area have annoyed me because they always go to 3G first even though I have strong LTE service where I live.
I've always wondered why companies can't make their phones instantly connect to LTE when it's there and why they always favor 3G -- but this is no longer an issue since the OP6T doesn't have 3G on Verizon

imucarmen said:
One of the great things about this device on Verizon's network is instant LTE service. In my house I have dead areas which cause my signal to drop. When trying to get LTE back it can sometimes take 30 seconds or more because once I get to an area with service it will first go to 3G and then sometimes get stuck on it and I'll have to toggle airplane mode to get LTE back in a timely manner. With the OnePlus6T as soon as I have service it goes instantly to LTE! This is the first time I've ever had a device connect to LTE so fast. All my previous devices over the past 5 years since I've had LTE in my area have annoyed me because they always go to 3G first even though I have strong LTE service where I live.
I've always wondered why companies can't make their phones instantly connect to LTE when it's there and why they always favor 3G -- but this is no longer an issue since the OP6T doesn't have 3G on Verizon
Click to expand...
Click to collapse
What now happens in the areas where you only had 3G on your old phone? On your new Oneplus 6T do you just have no signal at all since it is only a LTE phone?

mjnoles1 said:
What now happens in the areas where you only had 3G on your old phone? On your new Oneplus 6T do you just have no signal at all since it is only a LTE phone?
Click to expand...
Click to collapse
Well, I'm assuming that in none LTE areas I'll have no signal at all. But, Verizon's whole network has been converted to LTE as far as I know. I never go anyone where I don't have LTE (and I live in the sticks). But in the off chance that happens I have 2 lines and my Pixel 2XL is still in service.

mjnoles1 said:
What now happens in the areas where you only had 3G on your old phone? On your new Oneplus 6T do you just have no signal at all since it is only a LTE phone?
Click to expand...
Click to collapse
I too am on Verizon, and in my office at work, one of the places I had zero service on Axon 7, I still get calls and text and one spotty bar of LTE. At my house, in the basement bedroom where I have missed countless calls and txts, I have 3 bars of signal and no issues with calls, txts, or LTE.
I drive all around my county for work, and so far, I havent hit a no service area. on the Axon 7, they were evident. It could just be better coverage due to glass back vs metal (the real reason OEMs have switched to glass back imho) or the better modem of the SD 845, but hands down, the cdma-less VZW is far superior for me IRL usage so far.
This is obviously subjective, but despite living in a rural area, I have no need for cdma so far. Vzw is the only carrier with good coverage where i live (upstate SC) and somehow, cdma-less is better.

kitcostantino said:
I too am on Verizon, and in my office at work, one of the places I had zero service on Axon 7, I still get calls and text and one spotty bar of LTE. At my house, in the basement bedroom where I have missed countless calls and txts, I have 3 bars of signal and no issues with calls, txts, or LTE.
I drive all around my county for work, and so far, I havent hit a no service area. on the Axon 7, they were evident. It could just be better coverage due to glass back vs metal (the real reason OEMs have switched to glass back imho) or the better modem of the SD 845, but hands down, the cdma-less VZW is far superior for me IRL usage so far.
This is obviously subjective, but despite living in a rural area, I have no need for cdma so far. Vzw is the only carrier with good coverage where i live (upstate SC) and somehow, cdma-less is better.
Click to expand...
Click to collapse
what network type are you using in the phone information settings??

mpetruzz said:
what network type are you using in the phone information settings??
Click to expand...
Click to collapse
LTE only in *#*#4636#*#*
2g/3g/4g in Preferred Network Type

Yeah I was in a spot Friday that goes to 3g or no signal often. I still had some sort of signal. It had an R and an H on the signal bar I believe. It worked fine and was still pretty fast online. Signal is way better than any of the Pixels was.

When I select LTE only I get two signal icons in the status bar.

Just curious will wifi calling / VOLTE work on Verizon?

rekd0514 said:
Just curious will wifi calling / VOLTE work on Verizon?
Click to expand...
Click to collapse
Volte has worked for me since the moment the tech I chatted with switched my sim to CDMA-less. Case and point, I am in the section of my house with the worst reception, a spot where the Axon 7 I came from got zero service on tmob and Verizon. Yet, much to my heart's content, I have service and VOLTE in the downstairs Faraday cage that is my house.
To the second part, no, Verizon doesn't support wifi calling on this device yet. Hopefully, they will work that out soon, but so far, I am having the best network experience I have had yet with Verizon.

mpetruzz said:
When I select LTE only I get two signal icons in the status bar.
Click to expand...
Click to collapse
Wow, just reset mine and noticed. I guess I had defaulted back to LTE/CDMA/UMTS, which apparently works fine. When I switched to LTE only, you are correct, double LTE icons in the status bar. I don't remember it doing that on 9.0.4. That being said, the other, default setting works perfectly fine for me.

Did y'all not have any problems sending/receiving MMS (not SMS) when your phone was in LTE only mode? I had to manually switch back to the default preferred network type from the dialer menu in order to fix that issue.

I had no problems at all I did the following.
1.Ordered new SIM card
2.Turned off old phone and took out SIM from old phone
3.Went on my Verizon account put in info on BYOD
4. Insert New SIM in 6T
Finish Setting up in your Verizon account then turn on the 6T
Done all working
I was worried because my old phone was 3G but the LTE is everywhere I always have signal.