Q 4G dropping - HTC EVO 3D

Hello gang!
I've been having some issues with my Evo 3D. From time to time while I'm sharing internet via wifi tether or just browsing over the phone the 4G just randomly turn off. Over looked for something strange provoking this but the logcat doesn't say anything that would raise concern.
I have a stock ROM and Kernel on hboot 1.5 sw 2.17 .
Anyone else having this issue?
Sent from my Xoom using Tapatalk

Welcome to Sprint/Clear's 2500 mhz spectrum (for 4G WiMax). It's really only useful when outside with very little obstructions and near a tower. The band doesn't penetrate buildings, or other things for that matter, very well. You could have great signal in front of a window, move 2 feet and then lose it.
This is why people perceived WiMax as a failure, the technology doesn't necessarily suck, the band they put it on does. Clear's home internet service is a little more reliable, but that's mostly because their modems amplify the signal - this would kill our batteries in no time if we had to do that.

gk1984 said:
Welcome to Sprint/Clear's 2500 mhz spectrum (for 4G WiMax). It's really only useful when outside with very little obstructions and near a tower. The band doesn't penetrate buildings, or other things for that matter, very well. You could have great signal in front of a window, move 2 feet and then lose it.
This is why people perceived WiMax as a failure, the technology doesn't necessarily suck, the band they put it on does. Clear's home internet service is a little more reliable, but that's mostly because their modems amplify the signal - this would kill our batteries in no time if we had to do that.
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Agree with you, I'm very aware of the trashy 2500mhz spectrum from back in the day as a COMM SGT, but I would understand if it disconnects and keeps scanning, but the problem that I'm seeing on my phone is that the 4G radio gets powered off completely, and I have to restart it in order to get it working; sometimes this happens even with full bars, outside with network activity happening.
PS. It's funny how Sprint is so attracted to trash technology: Iden, WiMax... what's next!? lol

megabiteg said:
Agree with you, I'm very aware of the trashy 2500mhz spectrum from back in the day as a COMM SGT, but I would understand if it disconnects and keeps scanning, but the problem that I'm seeing on my phone is that the 4G radio gets powered off completely, and I have to restart it in order to get it working; sometimes this happens even with full bars, outside with network activity happening.
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Click to collapse
Oh I understand better now. I think I did see that happen before. I think it's rom/kernel related. In fact, I tried flashing another kernel recently and every time my phone powered on wimax would be on by default when I had already turned it off prior to shutting down and never turned it on anyway. Every version of that kernel I tried did that to me. Going back to stock kernel, no default 4G on.
Or my next guess is maybe you have a misbehaving widget/toggle?
PS. It's funny how Sprint is so attracted to trash technology: Iden, WiMax... what's next!? lol
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Click to collapse
Whats next? LTE? I hope that works out.

Related

Unacceptable 4G Stability?

Using a Verizon / HTC Thunderbolt, final retail model.
Not even tethering, just holding the phone in my hand, I'm getting 4 bars of signal and a signal strength of -77 dBm.
Seems to work fine most of the time, with good downstream, well within acceptable limits of the "5 to 12 Mbps" advertised, though it's extremely variable (it tends to regularly oscillate between these speeds, occasionally dropping down to EvDO speeds).
But the speeds aren't important, just an indication of the good signal strength.
Maybe it's just my cell tower, but I am very frequently seeing no network activity at all; can't even get to google or check for software updates. It's about as unreliable as Verizon's crap DSL. This is the polar opposite of the rock-solid stability I used to get with EvDO in the exact same place (in my house). Is it the 4G network being unreliable, or the Thunderbolt? Anyone else have this problem?
Edit: In terms of the patterns of the total downtime, it seems to go down for periods of 5 to 10 minutes per hour. Sometimes the downtime only lasts 15 or 30 seconds, other times I am completely out for 10 minutes, even though it says "4G LTE" in the dock and I am still getting good signal strength. My data usage for the month is under 5GB but above 2GB. I tend not to make very bursty traffic; except for app downloads, most of my traffic is of the low throughput, consistent variety (loading webpages, listening to MP3 streams at 128Kbps, etc). I use it very often but the bandwidth usage at any given time is probably lower than the speed of an EvDO connection (unless you count webpages that are downloaded at faster-than-EvDO speeds for a split-second to load them). I'll be using it and then it's just *down*. I can still make phone calls during the outage.
I noticed the same thing. I was all over the place cycling through no data, 1x, 3G, and 4G in like a minute in the same spot. I rebooted and got a much more stable 4G connection.
I'm thinking your expectations are a little too much. There are many areas I don't get a good 3g, let alone a 4g signal. I live in a suburb of Chicago and am in 4g 95% of the time, I don't always pay attention, because, after all, it's a phone first, but 4g seems to be there whenever I need it.
Also, in regards to unacceptable, what are you comparing it to? Is there more acceptable 4g signals in your area?
fillyo said:
I'm thinking your expectations are a little too much. There are many areas I don't get a good 3g, let alone a 4g signal. I live in a suburb of Chicago and am in 4g 95% of the time, I don't always pay attention, because, after all, it's a phone first, but 4g seems to be there whenever I need it.
Also, in regards to unacceptable, what are you comparing it to? Is there more acceptable 4g signals in your area?
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Click to collapse
I'm comparing it to Verizon EvDO / 3G. While speeds on EvDO were only about 20-25% of the max speed of LTE / 4G, it was completely reliable -- at least in my area.
Keeping the phone almost completely stationary sitting at my desk, connected to the same cell tower, and with my roaming data programmed to the latest version, my EvDO phone (a Droid 2) would have the connection available whenever I asked for it.
With the same exact usage pattern but with LTE, my Thunderbolt often has no connection, and it spontaneously comes back by simply waiting around for it to become available.
I expect the 4G channel to be "open" 24/7/365, not ever completely down -- especially while stationary in a standard building with a very high signal strength (always 4 bars). I have no unusual EMF like microwaves or bluetooth going on, just a laptop and a desktop and 2 LCDs. Wooden house, and I'm on the top floor.
If they can make EvDO stable 24/7, and EvDO is based on the same CDMA technology as LTE, why can't they make LTE stable 24/7 also? And I also don't understand why my phone does not fall back to EvDO if and when the LTE drops out. I recall a few times over the years of using it that my EvDO would fall back to 1x/RTT in the event of an EvDO downtime. But the MTBF of EvDO downtimes in my area was around 1 year. Now, the MTBF of LTE is about 50 to 120 minutes.
brandnewsimmy said:
I noticed the same thing. I was all over the place cycling through no data, 1x, 3G, and 4G in like a minute in the same spot. I rebooted and got a much more stable 4G connection.
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Click to collapse
I rebooted my phone and am getting a more stable 4G connection now, too I wonder if the phone itself has a stability problem with its 4G transceiver after a certain period of uptime? I will test this theory over the next couple days by rebooting my phone whenever I have a problem, and see if it helps.
Edit: I usually keep my phone "up" 24/7, and just leave it on the charger when I'm not on the go. I power it off only rarely, because I want to receive phone calls and text messages. When I just rebooted it, it had 2.5 days of uptime (hard to have too much uptime considering launch day was just a few days ago!)
fillyo said:
I live in a suburb of Chicago and am in 4g 95% of the time...
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Click to collapse
Out of curiosity, what suburb are you in that you're getting 4G 95% of the time? I live in Highland Park (about 20 miles up the north shore) and I don't have nearly as good of coverage (still decent though and I'm not complaining).
Sent from my ADR6400L using XDA App
I'm guessing it has to be your area. I am getting amazing 4G coverage in LA. I going to assume its going to take VZW some time before their 4G coverage truly blankets areas. I remember when 3G came out.. it was totally spotty for a long time until they had enough towers.
Kind of like what I recorded on my phone this afternoon....?
http://www.youtube.com/watch?v=qRTOCFoGFmU
5 min clip showing me cycling through web and map but getting no data, despite cycling airplane mode on and off. This has happened almost daily since getting the phone last Thursday, in multiple locations that are supposedly full 4G areas. Pretty annoying.
Double annoying since I got the Verizon phone because they're network's so much better (allegedly)...and yet my Nexus S on T-Mobile had full bars and fast "4G" data in the same location. I'd also had a reboot, and the 1tx symbols flashing but wasn't recording at the time. I'd been screwing around with this for at least 10 minutes before activating ShootMe to record it.
Thrillhouse847 said:
Out of curiosity, what suburb are you in that you're getting 4G 95% of the time? I live in Highland Park (about 20 miles up the north shore) and I don't have nearly as good of coverage (still decent though and I'm not complaining).
Sent from my ADR6400L using XDA App
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Well im in Gurnee area with 4g 99% of the time. Only time without is in my GF's brothers house. no 3g there either though lol. otherwise i never loose 4g. Even driving to vernon hills and around i always have 4g. not sure y in HP u dont always have it.
i am complete opposite i have 2-1 bars inside a building getting 12mbps
I notice it has an issue where it just randomly drops all my signals to search for 4g even though its not in my area... I think the only way to get reliable signal would be to set the radio to whatever you are using mostly... *#*#4636#*#* will get you into diagnostics and select phone infotmation and then choose CDMA auto for 3g or lte mode..... I'm thinking in the near future there will be a update that allows for easier lte turn off like 4g on the evo... the automatic thing is nice but it wastes battery and seems to cause some problem
RafficaX said:
Well im in Gurnee area with 4g 99% of the time. Only time without is in my GF's brothers house. no 3g there either though lol. otherwise i never loose 4g. Even driving to vernon hills and around i always have 4g. not sure y in HP u dont always have it.
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Hm. Not sure either, Gurnee/Vernon Hills is pretty close, maybe I just need more testing time (I'm also indoors most of the time).
Sent from my ADR6400L using XDA App
Thrillhouse847 said:
Hm. Not sure either, Gurnee/Vernon Hills is pretty close, maybe I just need more testing time (I'm also indoors most of the time).
Sent from my ADR6400L using XDA App
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i mean i never saw 4 bars on 4g but 2-3 always and hit 30 on the down and 50 on the up while in the antioch walmart lol but never with out 4g expect in that one house lol.
I just set mine to LTE only let's see if its more stable than the auto mode
itzjonjon69 said:
I just set mine to LTE only let's see if its more stable than the auto mode
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let me know, i should try that too. never thought of that when looking at it. wonder if ill save a bit of battery not trying to also find 3g, im sure i lose very lil hunting for 3g but still. saving some battery may give me another in on 4g lol
RafficaX said:
i mean i never saw 4 bars on 4g but 2-3 always and hit 30 on the down and 50 on the up while in the antioch walmart lol but never with out 4g expect in that one house lol.
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You realize that the phone is incapable of 50 up, don't you? Those kinds of speeds are a known bug in the Speedtest.net and other similar speed tests that don't deal with the Thunderbolt's large transmit buffer properly.
Anyone else seeing any errors in the logcat that look similar to this?
D/DATA ( 1779):[QCTMM] DataNetStatistics sent == 0 && received == 0 newActivity=NONE
D/DATA ( 1779): sentSinceLastRecv=0,watchdogTrigger=10,maxindex=0
E/TrafficStats( 1555): [QCTMM]tryAll index =1
E/TrafficStats( 1555): [QCTMM]tryAll index =2
There is an entry like this every few seconds when I'm on mobile data.
RafficaX said:
Well im in Gurnee area with 4g 99% of the time. Only time without is in my GF's brothers house. no 3g there either though lol. otherwise i never loose 4g. Even driving to vernon hills and around i always have 4g. not sure y in HP u dont always have it.
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Click to collapse
verizon towers fallowing u now? from 95% now 99% lol ...that 1% its your gfs house damn it.... probably a bridge on the way and tower to tall to go under ...****...otherwise u would it have 100% wooohoooo
I'm at my desk at work in times square, nyc. Yesterday I had 1-2 bars of 4g at my desk. Today, my phone has yet to switch out of 1x mode my entire 2 hour commute here and so far today. I tried rebooting and can't get 3g or 4g to come on. I'm pretty annoyed

Drop to 1x Too easily?

has anybody noticed how easily the E3D drops to 1x? whenever im in a low signal area or maybe decent with 2-3 bars it will drop to 1x and take a century tome go bk to 3g. i dont remember the original evo having this issue because in areas i know i would have 3g with the evo im getting stuck bouncing between 3g and 1x
I see it happen more and more. I was talking to my roommate and some other sprint people who agree with these findings. DC area for me
THEGAMEPLAY94 said:
has anybody noticed how easily the E3D drops to 1x? whenever im in a low signal area or maybe decent with 2-3 bars it will drop to 1x and take a century tome go bk to 3g. i dont remember the original evo having this issue because in areas i know i would have 3g with the evo im getting stuck bouncing between 3g and 1x
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Click to collapse
along these lines, i notice my EVO 3D switches to roaming much quicker than my EVO and NS4G do. perhaps the time threshold was lowered for when it switches between 3g/1x/roaming.
my first guess of where to find this setting would be in EPST which communicates with the radio. would be interesting to locate the setting and compare values between different sprint android devices ...
munsterrr said:
I see it happen more and more. I was talking to my roommate and some other sprint people who agree with these findings. DC area for me
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agree, same thing here, DC/Md
Dc/md for me too.....i was thinking some threshold must have been lowered too would be nice to find it

Poor 3g in places 1x might be better?

I was wondering if on an unrooted phone can you tell your phone to use 1x instead of 3g because the speeds may be better due to a stronger signal?
boom!! from my shooter
DJ1994 said:
I was wondering if on an unrooted phone can you tell your phone to use 1x instead of 3g because the speeds may be better due to a stronger signal?
boom!! from my shooter
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Click to collapse
Ok I will bite, how slow is your 3G? Even if your 3G is very slow it is still highly unlikely that you would get 1xrtt that is faster than your 3G speed. 1xrtt is very slow. It peaks just shy of 20Kb/s, but real world speeds are likely to be more like 7.5-13Kb/s.
If you are unhappy with your 3G speed you could setup one of the custom PRLs to allow you to roam on Verizon's 3G towers. They are way better, and way faster than sprint in nearly every region.
Sad Panda said:
Ok I will bite, how slow is your 3G? Even if your 3G is very slow it is still highly unlikely that you would get 1xrtt that is faster than your 3G speed. 1xrtt is very slow. It peaks just shy of 20Kb/s, but real world speeds are likely to be more like 7.5-13Kb/s.
If you are unhappy with your 3G speed you could setup one of the custom PRLs to allow you to roam on Verizon's 3G towers. They are way better, and way faster than sprint in nearly every region.
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Click to collapse
In my area my 3g speeds is about 5 kB/s. 1x is definitely faster.
One option is to use wifi at your house as I am sure 95% of home ISPs are much faster than 1x and possibly 3g.
Outside of your house you may want to use 1x or the Verizon prls but be careful, you roam too much and Sprint will cancel your line(s).
I think I might take DJ's angle on this... there are rare occasions where I have the weakest signal available too and 3g just won't do anything. Nothing will load, yet it acts as if there is signal. I wouldn't mind seeing if 1x would do something in these instances - would be better than being at a stand-still.
However, flipping this around... I have noticed that when I do get bumped to 1x while I'm doing something on the web (streaming music, navigation, etc), it stays in 1x until I'm done using data - even in areas I know I normally would get strong 3g speeds. Is this just a limitation where switching or even scanning for 3g would drop whatever data stream there is and not be able to pick up where it is or just have to restart?
You guys having 3G speeds that are as slow as you describe are likely not experiencing slow 3G, but actually only connected to 1xrtt. Sprint for some reason has the ability to tell our phones they are connected to 3G, but if you run a diagnostic it will tell you that you are in fact connected to 1rxtt not evdo-a. So apparently they can spoof the 3G icon to show up. Total BS. So that honestly sounds like what is happening.
Sad Panda said:
Ok I will bite, how slow is your 3G? Even if your 3G is very slow it is still highly unlikely that you would get 1xrtt that is faster than your 3G speed. 1xrtt is very slow. It peaks just shy of 20Kb/s, but real world speeds are likely to be more like 7.5-13Kb/s
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Click to collapse
False, unless you're referencing kilobytes and not kilobits, in which case when you refer to kilobytes, you capitalize the B. Uppercase B = byte, lowercase b = bit. Real world 1xRTT bandwidth should peak around 140ish kbps (averages probably below 100). I've seen 80+ myself a number of times. The important thing to keep in mind about 1xRTT is you don't even have to fully saturate your bandwidth before the latency skyrockets.
However, I will agree that even if your 3G is slow, it's still probably faster and more responsive than a good 1xRTT signal.
Sad Panda said:
If you are unhappy with your 3G speed you could setup one of the custom PRLs to allow you to roam on Verizon's 3G towers. They are way better, and way faster than sprint in nearly every region.
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Click to collapse
If you are going to give this bad advice out, put a disclaimer on it stating that force roaming to Verizon could get your account cancelled.
tgruendler said:
If you are going to give this bad advice out, put a disclaimer on it stating that force roaming to Verizon could get your account cancelled.
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Click to collapse
Had I provided the link or the method to do it there would have been a disclaimer about that possibility for my own liability. However as these people all signed contracts they would know that already. Unless you are an idiot and don't read every last bit of every term and condition before signing, or don't understand what you read. Now if that is the case they have far more problems than any trouble I could get them into. I would be courteous and issue a reminder before providing the method, but as far as you trying to shift responsibility on to me, I think it is a load of horse ****. No person has any business signing a contract they haven't read or haven't understood. So "my bad advice" from your perspective is really a moot point. That's great that you don't agree with the method, you have your reasons I'm sure, but I personally have unlimited roaming, that's something I pay for. I've read my contract and I stay within the confines of those terms. If these people read their's I'm sure they will too.
---------- Post added at 02:34 PM ---------- Previous post was at 02:32 PM ----------
ydoucare said:
False, unless you're referencing kilobytes and not kilobits, in which case when you refer to kilobytes, you capitalize the B. Uppercase B = byte, lowercase b = bit. Real world 1xRTT bandwidth should peak around 140ish kbps (averages probably below 100). I've seen 80+ myself a number of times. The important thing to keep in mind about 1xRTT is you don't even have to fully saturate your bandwidth before the latency skyrockets.
However, I will agree that even if your 3G is slow, it's still probably faster and more responsive than a good 1xRTT signal.
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Click to collapse
As you can see I used capital K. I was responding on my phone and didn't notice the b was left lower case. If you do the math on the kbits you sourced you are in the range I posted.
I was getting consistently under 50 on speed tests in the auditorium I was in. It was 3g from the speed tests and the rooted phone next to me. I have a Verizon Orlando 11115 but i can't force roam I tried to buy roam control but its not in the market I have the app but no license. I see 1x around 100-120 a lot so I was thinking that would be a lot more usable than 19. I was just wondering if there is a way to turn off 3g but leave on mobile data which would be the 1x.
boom!! from my shooter
Sad Panda said:
You guys having 3G speeds that are as slow as you describe are likely not experiencing slow 3G, but actually only connected to 1xrtt. Sprint for some reason has the ability to tell our phones they are connected to 3G, but if you run a diagnostic it will tell you that you are in fact connected to 1rxtt not evdo-a. So apparently they can spoof the 3G icon to show up. Total BS. So that honestly sounds like what is happening.
Click to expand...
Click to collapse
Maybe, but I thought that was an issue on stock rom?
Most custom toms will show 1x when you are on 1x.
right we were talking about the stock unrooted. This is not that big an issue for me as roam control is back in the market and my phone crashed so I decided to go ahead and root htc way.

LTE Connection Fix

So I might possibly have a fix for the continual dropping of the LTE connection, this is what I did
Enter the menu through the dialer via ##3282#
Select Edit Menu, enter your MSL number (You can get it from MSL Reader in the play store - requires root)
Select LTE Record
Change LTE scan Timer from 30 to 5
Select Menu and select commit changes, reboot and check LTE connection
I don't know if this is actually a good fix or just a coincidence that mine started working right after I made the change, I did this in an attempt to make my phone scan for LTE more frequently in hopes that it would stay connected, right after I made the change i have had absolutely no problem staying connected to the LTE network.
I would appreciate it if other people can change this and reply with their results so we can see if it actually makes a difference or not
Keep in mind that this will impact your battery life. You are forcing your phone to constantly search for a signal when you are in an area where there is none. Prl updates are now being used to update LTE info on the phone so try updating your prl
om4 said:
Keep in mind that this will impact your battery life. You are forcing your phone to constantly search for a signal when you are in an area where there is none. Prl updates are now being used to update LTE info on the phone so try updating your prl
Click to expand...
Click to collapse
Updated prl many times only to be connected to LTE for a very short time and then kicked back to 3G, and i have not had any noticeable impact on battery life. As of right now I am at 4 hours on battery, 95% remaining, and 57% of that battery usage is from the screen
When you get to an area without LTE, the phone will constantly search for signal, that's when battery life will be impacted. This radio design is pretty low power though.
I might have to try this but I definitely do not want my battery life to go down.
Thanks
well in my case and I imagine with most other people who are having LTE connection issues, I live and travel within the coverage area and when I do travel outside the area I have a car charger with me or something of that nature, and on the other hand my battery life with the EVO LTE is so excellent with MeanROM I never have really had to worry about it
om4 said:
When you get to an area without LTE, the phone will constantly search for signal, that's when battery life will be impacted. This radio design is pretty low power though.
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Click to collapse
Isn't this a case with all LTE phones?
Sent from my EVO using xda premium
No, LTE does drain power but its set to only scan after a set time, this workaround lowers the time between scans significantly and will use more power. Some LTE phones have a separate chipset solely for LTE. They waste much more power then the integrated setup our phones use. Thunderbolt is a good example of that. Separate radios and terrible battery life
om4 said:
No, LTE does drain power but its set to only scan after a set time, this workaround lowers the time between scans significantly and will use more power. Some LTE phones have a separate chipset solely for LTE. They waste much more power then the integrated setup our phones use. Thunderbolt is a good example of that. Separate radios and terrible battery life
Click to expand...
Click to collapse
Ur also talking about chipsets that are 45nm process ones in regards to the phones with separate LTE modem chip like the thunderbolt... We are at 28nm process now with the current Qualcomm SoC....
Sent from my Wolfpack EVO
True, our phones are very efficient in comparison
om4 said:
Keep in mind that this will impact your battery life. You are forcing your phone to constantly search for a signal when you are in an area where there is none. Prl updates are now being used to update LTE info on the phone so try updating your prl
Click to expand...
Click to collapse
Not really. Although the correct records have to be in the Prl for LTE to work they are not pushing updates to make lte work in new markets. Also the prl is not going to fix this connection issue.
Sent from my C64 w/Epyx FastLoad cartridge
Will changing the LTE scan timer actually fix the threshold issue though?
I've found by doing *#*#4636#*#* and change the setting from CDMA +LTE/EVDO Auto to LTE,CDMA you can hold the LTE connection much longer. All the way up to -130 dBm RSRP. Even an LTE connection at -120 dBm should yield better results than 3G.
You'll still need to change it back once you are out of LTE though as you'll be left on 1X.
leerage said:
Will changing the LTE scan timer actually fix the threshold issue though?
I've found by doing *#*#4636#*#* and change the setting from CDMA +LTE/EVDO Auto to LTE,CDMA you can hold the LTE connection much longer. All the way up to -130 dBm RSRP. Even an LTE connection at -120 dBm should yield better results than 3G.
You'll still need to change it back once you are out of LTE though as you'll be left on 1X.
Click to expand...
Click to collapse
It does not, it just allows for the phone to reconnect faster.
digiblur said:
Not really. Although the correct records have to be in the Prl for LTE to work they are not pushing updates to make lte work in new markets. Also the prl is not going to fix this connection issue.
Sent from my C64 w/Epyx FastLoad cartridge
Click to expand...
Click to collapse
Some people have not updated prl at all, they could benefit from an update.
I wonder if this is related to the wifi disconnecting in order to save battery life. Does it only drop LTE when the screen is off or does it also disconnect when it's being used?
If it's disconnecting on purpose shortening the reconnect time shouldn't harm battery life too much as long as you're in an area with LTE.
It won't if you are in a reliable area, in a fringe area you may connect. When the connection weakens, it will default to 3g and the phone will search again. If you make this change and live in an area without, it will continue to scan until signal is found
Ok, so I was skeptical about the LTE issues of this phone. Because of this I grabbed my wife's LG Viper to see if she had 4G. She didn't, then I remembered I switched her phone to 3G only when she first got it to save battery life since her battery life sucks. When I switched back on get 4G, her viper connected to 4G right away. After playing around with her viper for a while and pulling in some good speed tests, I went back to my Evo, which was still sporting only 3G.
After cycling to airplane mode and back, my Evo showed 4G just long enough for me to get a signal reading of -113db. After playing around with my Evo for a while, I was able to hold a signal long enough to get a couple of speed tests in before it would switch back to 3G.
After playing with both phones for a while, I was able to observe that even though we are on the edge of a 4G tower, the viper did not switch over to 3G. It stayed on 4G even though the signals for 4G were pretty equal for the two phones. One thing I did find in the viper's ##data# menu is an option of "LTE, EVDO, 1X". Basically it looks like an order option for which the phone to look for service. I did not see this option on my Evo.
From what I've experienced, it seems that the Evo switches back to 3G a little too soon. Is there a way for us to make it hold on to the signal a little longer or with less db?
I will be playing around some more with the two phones. Right now, I switched my scan timer to 5. The only way my Evo is holding onto 4G right now is because I switched the data option to LTE only. The funny thing is that its been working great and holding onto 4G perfectly. I've seen it dip down to -118db and still function fine.
Sorry for the long post. I will have to agree that the Evo seeks to have a software issue.
Sent from my EVO LTE using xda app
xHausx said:
I wonder if this is related to the wifi disconnecting in order to save battery life. Does it only drop LTE when the screen is off or does it also disconnect when it's being used?
If it's disconnecting on purpose shortening the reconnect time shouldn't harm battery life too much as long as you're in an area with LTE.
Click to expand...
Click to collapse
Na this issue is more of a threshold issue I believe they are talking about. Ie seeing an EVO and an sgs3 side by side with only the sgs3 connecting to LTE... I can understand on weak signal areas as the sgs3 is supposed to have a tad better antennae and other things related to that area and such given the FCC docs results discussed at s4gru by AJ...
But in a fairly good area signal wise on both phones they both should get LTE which isn't the case at times it seems.... Hence the thought HTC needs to tweak the threshold here for us...I remember on WiMAX it was an easy edit, but haven't even looked once on our phone since I don't get lte here anyway. Lol
Sent from my EVO using Tapatalk 2
It is most likely a threshold issue. Too bad I can't seem to find anything either to fix it either, not in a reliable area to really justify mucking about with my phone. WiMAX was so much easier, then again just as easy to screw up. Could be one of the reasons this phone is locked down so tight
hey, im hoping to get some help.
I type in ##3282# and nothing happens on my dialer, am i suppose to hit something?
I am on aokp build 3, does that even matter?
I have had 4g in allston for a few weeks now, and for some reason i can not get a hold on that signal anymore. My phone says i have lte 13 connection, but i can not get a 4g internet signal.
Hoping getting into the phone debug menu or lte menu i can manual lock in on the tower better, but i can not get to the menu to edit those settings.
Ive updated to the 2.13.651.1 ota and PRI 2.45_003.
om4 said:
It does not, it just allows for the phone to reconnect faster.
Some people have not updated prl at all, they could benefit from an update.
Click to expand...
Click to collapse
Nothing has really changed and the phone updates itself.
Sent from my C64 w/Epyx FastLoad cartridge

Won't stay connected to LTE

My EVO 4G LTE won't stay connected to LTE.
I just came to visit my family in ATL and it won't stay connected. When I reset my radio (airplane mode on then off) it connects to 4G with 3 or 4 bars and then disconnects every time. I haven't gotten it to stay connected for more than 20 seconds.
I'm running Stock With Goodies 2.14. I have roaming set to auto, and I have my data mode set to CDMA/LTE.
Any suggestions?
Update your prl and profile. Let me know how that works.
Yeah, I already tried that. I just tried it again for giggles and still no go.
I just did a full wipe and updated to stock with goodies 2.14 a little earlier because I was on 2.11 and it wasn't staying connected - I thought that a hard reset might help resolve the issue (plus I needed to update anyway).
The bars you see have nothing to do with your LTE signal. Stock OEM ROMs show 1x signal strength at all times, whether or not it says 3G or LTE. Chances are, you are on the edge of LTE with a very weak signal. The phone can connect to one tower for voice service but also be connected to a completely different tower much farther away for LTE (or EVDO for that matter), so a strong voice signal does not indicate a strong data signal.
There is a lot of relevant info on this stuff in the forums at s4gru.com. The people over there know exactly what they're talking about.
Ah... So I'm probably connected to the next tower over and it just goes out.
Just saw this there. http://s4gru.com/index.php?/topic/2...to-determine-your-actual-lte-signal-strength/
Ughhhh...
http://forum.xda-developers.com/showthread.php?t=1898433
http://forum.xda-developers.com/showthread.php?t=1905007
http://forum.xda-developers.com/showthread.php?t=1901905
And then there were 4. On this forum. There are also these:
http://s4gru.com/index.php?/topic/1644-evo-lte-4g-connection-issues-contact-sprint/
http://community.sprint.com/baw/message/458883
So, basically, the EVO LTE's LTE connect isn't very good. This kinda makes me upset.
I can get a constant connection if I set the mode as LTE only. It's not a good connection, but it is LTE. It makes me wonder if my phone doesn't know about other LTE towers nearby because sprint has excellent coverage here.
ItsTommyGun said:
So, basically, the EVO LTE's LTE connect isn't very good. This kinda makes me upset.
I can get a constant connection if I set the mode as LTE only. It's not a good connection, but it is LTE. It makes me wonder if my phone doesn't know about other LTE towers nearby because sprint has excellent coverage here.
Click to expand...
Click to collapse
So far the official stance is that it is a software issue. An update is supposed to fix it.
subhumanderelict said:
Ughhhh...
http://forum.xda-developers.com/showthread.php?t=1898433
http://forum.xda-developers.com/showthread.php?t=1905007
http://forum.xda-developers.com/showthread.php?t=1901905
And then there were 4. On this forum. There are also these:
http://s4gru.com/index.php?/topic/1644-evo-lte-4g-connection-issues-contact-sprint/
http://community.sprint.com/baw/message/458883
Click to expand...
Click to collapse
This ****ing forum is starting to smell like **** because of people like you. You don't have the courtesy to just disregard the post if it bugs you. Instead, you go out of your ****ing way to copy 5 different links to not really help the OP, but to just shove this "already been posted" bull**** down people's throats. For ****s sake..
The bars you see have nothing to do with your LTE signal. Stock OEM ROMs show 1x signal strength at all times, whether or not it says 3G or LTE. Chances are, you are on the edge of LTE with a very weak signal. The phone can connect to one tower for voice service but also be connected to a completely different tower much farther away for LTE (or EVDO for that matter), so a strong voice signal does not indicate a strong data signal.
There is a lot of relevant info on this stuff in the forums at s4gru.com. The people over there know exactly what they're talking about.
Click to expand...
Click to collapse
That's probably what it is.. But there's no saying because the EVO 4G LTE seems to be having issues.. my girlfriend's iPhone 5 on sprint gets LTE in places I don't.
grizzlywan said:
That's probably what it is.. But there's no saying because the EVO 4G LTE seems to be having issues.. my girlfriend's iPhone 5 on sprint gets LTE in places I don't.
Click to expand...
Click to collapse
Well, I'm sure it is an Evo software issue (my GS3 gets LTE in places my sister's Evo doesn't; I'm hoping for her sake that it's a software issue), but the point was that the signal is weak enough for the phone to fall back to 3G instead of holding onto it and that the bars he saw were deceptive.
grizzlywan said:
This ****ing forum is starting to smell like **** because of people like you. You don't have the courtesy to just disregard the post if it bugs you. Instead, you go out of your ****ing way to copy 5 different links to not really help the OP, but to just shove this "already been posted" bull**** down people's throats. For ****s sake..
Click to expand...
Click to collapse
You know something? You're right. I make these forums smell like fecal matter by attempting to harmonize and combine similar topics. Nay, I am single-handedly bringing on the downfall of humanity! How dare I try to direct people to topics that have been created 3 times before to help other people who might have this problem so they don't have to go looking for the information in multiple, scattered threads.
And to cater to your apparent love of all things scatological, the next thing you know, parents aren't going to tell their kids to eat their vegetables more than once. And why should they? Learning from people who have been there before is simply not worth it when we can just spend 45 minutes on the can trying to take a grunt. (In case you don't get it, "learning from people [before]" refers to people who have previously created threads on the same topic and "45 minutes on the can" refers to wasting time searching for the information which is fragmented across a forum, which you seem to prefer.)
Sent from my EVO using xda app-developers app

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