Develop Bugs

Strange 4G behavior - beyond speed tests

I have been feeling out my 4G connection for awhile now, and I am still having a strange experience with it. Speed tests always give good results, but actually using 4G for daily tasks is not working out well so far. Often times it loads pages and market or maps slower than with 4G...
I had been having this off and on all week, but I thought it was just my poor 4g connection at home. Anyway, now I'm writing from a mall with a very strong connection. Now I'm noticing when I load a page or open maps/market, it actually disconnects from 4G and loads with 3G for a second or two then switches back..
I've been using fresh, dc, and bugless ROMs, and always with the latest radio. I've had to apply the 4G patch a few times to get 4G working, but once it's up, it behaves the same...
Is it the ROM, my phone, or the nature of 4G in philadelphia?

I'd guess it's the nature of the 4g. It's still a new market. One thing, the bars on your phone only show the connection to the tower, not the connection to the internet. My 4g has been like that in places around Dallas, but closer to the heart of Dallas, I get more consistent connection. Someone correct me if I'm wrong, but that just seems to be the nature of technology here on the bleeding edge.
I might add, that for whatever reason, I cannot load my XDA bookmark to the evo 4g page on 4g at all, but it loads fine on 3g or wifi. I have yet to understand that one. Other pages seem to load ok though.

I've also noticed issues on xda, I think it's related to flash. I noticed if I load flash only sites on 4G it never loads or takes a stupid long time... If I cut to 3G it loads fine... On xda, it's the flash ads..

Having the phone process information and display it is much different then just doing a speed test. I'm in Philly also - but only use the 4G for tethering.

rutter9 said:
Having the phone process information and display it is much different then just doing a speed test. I'm in Philly also - but only use the 4G for tethering.
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Click to collapse
I agree completely, but the issue is that, on some pages (usually with flash) It loads and displays the information faster on 3G than on 4G... I'm not sure what would cause that. I'll try tethering and see if it's the same... I'll also try 4G when I'm in central philly...

I wonder if flash determines what quality to stream the content at? Like if you use sprint tv on 4g you will get higher quality video but it can be laggy trying to catch up to the stream. When on 3g the quality is a little less but doesn't skip around at all.

I'm having similar issues with my 4G connection. Some pages won't come up. The progress bar loads up to about 50% then either takes a really long time to bring up the page or not at all. All I get is a blank page. The xda forums are one of the sites I'm having problems with also. It loads up fine over 3G and WiFi. I'm currently running the OMJ rom, latest Radio, and the Fresh 4G fix. I'm not sure if the problem lies with my rooted Evo or the 4G network.

rutter9 said:
I wonder if flash determines what quality to stream the content at? Like if you use sprint tv on 4g you will get higher quality video but it can be laggy trying to catch up to the stream. When on 3g the quality is a little less but doesn't skip around at all.
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That makes sense to me. Still, it seems strange that the network or phone one struggles to keep up like that. Ah well, like I said, the nature of things out here on the bleeding edge.

i have experienced similar 4g/3g flipflopping behavior and pisspoor wifi. its like the radio is very slow to get a connection as coming out of the pocket and then while in use it will go to 3g then say it's found a 4g and get on that and back to 3g. sometimes i'll see 4g w/ full strength but am unable to do any internet functions (web browser, pandora, meebo, appbrain all fail indicating no network). by putting it into Airplane mode...count to 3...take it out of airplane mode the radio reconnects and is able to pass data as expected.
i have done full cache, delvikcache, (and the other whatchamacallit) formatting between builds. and cleared the cache after updating the radio (even tho i shouldn't need to for Fresh .3)
i have not fussed with App2SD nor anything Flash related.
not sure if i live/work on the "edge" of coverage or if it's EVO (software or hardware) related. I"m leaning more to the coverage at this point. between testing it more as i move around town and next weeks froyo builds maybe the 4g gods will shine down upon me.

Increase WiMAX_Idle_Sleep(s) setting
I had the same issue and found these instructions which show how to increase WiMAX_Idle_Sleep(s) setting.
hit ##DATA# > Edit mode.
Put in your msl code
Chose WIMAX
Scroll down to Wimax_Idle_Sleep
Change the value from 10 to 300.
Click menu, commit changes and restart the phone.
See ' [GUIDE] Easy way to get MSL without calling Sprint or using CMDA Workshop' to get MSL Code, or just call Sprint and ask for it.

mgshultz said:
I had the same issue and found these instructions which show how to increase WiMAX_Idle_Sleep(s) setting.
hit ##DATA# > Edit mode.
Put in your msl code
Chose WIMAX
Scroll down to Wimax_Idle_Sleep
Change the value from 10 to 300.
Click menu, commit changes and restart the phone.
See ' [GUIDE] Easy way to get MSL without calling Sprint or using CMDA Workshop' to get MSL Code, or just call Sprint and ask for it.
Click to expand...
Click to collapse
I work in Philly and have the 3g 4g connection problems too. Your fix did not work for me. No matter what Rom or fix I've tried I can't keep a stable 4g connection without the stock Rom flashed. Sometimes WiFi tether will work on 4g with a custom Rom but anything else and I have all kinds of connection issues. I don't think its the network because 4g connection cards work just fine.
Edit: my main cause of concern is that simultaneous talk and data. I like to be able to talk and still follow sports scores while working. Sticking to stock for now.

Problems reconnecting to 4g

Is anyone else having a problem where it has trouble reconnecting to 4g after it loses the signal,like if you drive out of range of the tower and then into another Wimax area?

Yes, I have that issue as well... I just fixed my 4G with the "easiest way to fix 4G" thread posted in general. If I turn it off and turn it back on, I find it, but just keeping it on doesn't put me back on 4G automatically.

I have this problem also. I'm hoping group will fix stuff like this. At least the OTA got my EVO to connect to 4G! Either that or they have improved the signal here on Maui.
HTC EVOから投稿

HTC EVO browse and talk?

Can anybody check if this is possible. Talk and Browse at the same time only while connected to 4G network. And if it is, what else can you do while on a call? I can't test this out, no 4G in my city yet. Thank you.

u can talk n browse on 4G n on wifi but not on 3G, i havent tested it out on 4G yet since its not on my area

[SOLVED] 4g/3g randomly disconnecting and reconnecting

I know there are a lot of posts about internet connection problems, but I couldn't find anything exactly like my issue.
If I only have 3g on, my Evo will connect and stay connected for a few minutes, then it will disconnect for about 20 seconds, and reconnect agaoin for another few minutes... and the cycle continues.
If I turn 4g on and 3g off, the same thing happens with the 4g.
If I have 3g and 4g on, the same things happens except sometimes 3g will be the one to connect and sometimes 4g.
Wifi works great.
My Evo is brand new and recently rooted, running Myn's Rom RLS4.
anyone had similar situation or resolutions?
THnkas!

there are only pockets of 4G so far. dont expect there to be 4G around like 3G is. as it is, 3G still isnt dat big/nation wide, but 4G is like rare. its like a needle in a haystack. the needle is 4G surrounded by the Hay/3G

Thanks,
the thing though is that my wife's unrooted Evo always maintains a strong 4g connection.
It wouldn't bother me too much the same thing happens when I use 3g. it reconnects every 5 minutes or so. Maybe rooting it caused damage?

Could flashing a different radio or wimax help?
Sent from my Evo using XDA App

Don't flash radios... that is all

For anyone with similar problem, I found my answer here and fixed my connectivity issueshttp://forum.xda-developers.com/archive/index.php/t-704845.html.
clubtech said:
I don't think it has anything to do with the ROM.
If when you are connected to 4G you can access the internet, only suddenly 4G it drops for no reason and switch to 3G and then reconnects to 4G and goes on and on, below is the solution. if when you are connected to 4G you can not access the internet at all, the below wont fix it for you and it is probably a problem with your rom.
You will need your msl code to fix this, loop up in the forums to to obtain your msl code from Sprint:
hit ##DATA# > Edit mode.
Put in your msl code
Chose WIMAX
Scroll down to Wimax_Idle_Sleep
Change the value from 10 to 300.
Click menu, commit changes and restart the phone.
This fixed it for me and i never drop 4g (when in good coverage) again.
Basically Sprint has some STUPID setting that tells 4g to go into "sleep mode" of no data is passed on the 4g connection after 10 seconds which is essentially disconnecting 4g.
The problem is it goes into sleep mode (disconnecting), but then rescans and look for a 4G signal > reconnects to 4g and if no data will be passed in 10sec it will do the same again in an endless loop.
10sec to put a connection into sleep mode is really low so change it to 300sec.
The odd thing is that this is only happening in certain locations and with certain towers.
I tried to call Sprint and explain about this issue but my attempts fell on death ears.
Go ahead and try the above. if it helps you please someone make this a sticky as you are not the first i see having the issue.
Click to expand...
Click to collapse
You'll need your msl number to do this. SImply download msl reader from the market.

Can you change any of the other settings that would make it work better?
Scan attempt
Scan retry
Thanks for this info, I gave it a try but I still cannot connect without doing a profile update and or PRL update.
Todd
chasehearn said:
For anyone with similar problem, I found my answer here and fixed my connectivity issueshttp://forum.xda-developers.com/archive/index.php/t-704845.html.
You'll need your msl number to do this. SImply download msl reader from the market.
Click to expand...
Click to collapse

No 4g on g2

Hello all! I installed unity on my g2 and since then I haven't seen 4g at all. Any ideas? Also, I asked this a few days back but I still can't run WiFi without mobile network shutting down. Any help on either subject would be greatly appreciated!
Sent from my HTC Vision using XDA App

*You should read the first few posts in the unity thread. It mentions that tmo lies about 4G and your phone will only show 4G when you really are in the area.
As for the actual 4G icon, it's been replaced with the H icon. Search the unity thread for the 4g icon mod. *
scratch that. it's gone since the last time the op was taken down. but yeah, it only shows 4g when you're actually in a 4G area. The mention of that is not in the thread anymore unfortuantely...
Final Edit: here's the official statement on that: http://www.virtuousrom.com/p/faq.html (it's the 2nd to last question on the bottom)
Your mobile netwok is disabled when you have wifi. It is normal. It prevents excessive battery drain. You'll be reconnected to your network as soon as you leave the wifi zone.
Sent from my Desire Z via XDA App

Thank you for your fast reply! I know that about the H icon, but in places i used to get it, i dont anymore. Maybe something is screwy because i just ran a speed test and it pulled 3.7 meg wit 2 bars 3g. I also understand about the wifi but for some reason i cant get calls or texts and i have to reboot to get the mobile network tgo come back on.
Sent from my HTC Vision using XDA App

coachmoore said:
Hello all! I installed unity on my g2 and since then I haven't seen 4g at all. Any ideas? Also, I asked this a few days back but I still can't run WiFi without mobile network shutting down. Any help on either subject would be greatly appreciated!
Click to expand...
Click to collapse
the "H" icon is "4G". If you want the "4G" icon, you can put it in the ROM yourself. You'll only see "H"/"4G" in the areas where the towers have been upgraded to HSPA (which is most major places by now, actually).
When you're connected to wifi, the phone automatically disables your 3G in order to save battery. It switches to "2G only" because your WiFi data is faster.

coachmoore said:
Thank you for your fast reply! I know that about the H icon, but in places i used to get it, i dont anymore. Maybe something is screwy because i just ran a speed test and it pulled 3.7 meg wit 2 bars 3g. I also understand about the wifi but for some reason i cant get calls or texts and i have to reboot to get the mobile network tgo come back on.
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
check the link in my signature of virtuous unity mods for the 4g icon.zip

coachmoore said:
Thank you for your fast reply! I know that about the H icon, but in places i used to get it, i dont anymore. Maybe something is screwy because i just ran a speed test and it pulled 3.7 meg wit 2 bars 3g. I also understand about the wifi but for some reason i cant get calls or texts and i have to reboot to get the mobile network tgo come back on.
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
i'm going to assume that this is the first time you installed unity on it. so yeah, what you thought you had 4g, actually was 3G. the unity rom actually denotes a difference in that and tells you that it's actually 3G not 4G.

Ok man, thank you again for all of your helpful replies. However the "H" icon i used to get all over the place, now i never see it. So what youre saying is that i was never really getting 4g, it just had the H up there. What i understood was gthe H was HSPA or 4g. As i said, i live close to atlanta, so i should have it, i thought i did anyway...lol
Sent from my HTC Vision using XDA App

coachmoore said:
Ok man, thank you again for all of your helpful replies. However the "H" icon i used to get all over the place, now i never see it. So what youre saying is that i was never really getting 4g, it just had the H up there. What i understood was gthe H was HSPA or 4g. As i said, i live close to atlanta, so i should have it, i thought i did anyway...lol
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
Don't worry too much about whether or not you see the "H" icon or the "3G" icon. A lot of times the "H" hangs up there much longer than it should. I noticed on some ROMs that it will just show "H" for a long time even though you've actually moved down to UMTS connection (3G).
As long as you're getting good speeds and not noticing a difference I wouldn't stress about it too much.

Ok, thanks for all of your help as always guys... You ate the best in the biz!
Sent from my HTC Vision using XDA App

lol np. just a quick search will usually solve you problems though
and to note, isn't ATL AT&T's hq? if so, then I dont think Tmo has much radio space there.

It is at&t, in fact, I'm a lineman for at&t. Tmobile is just cheaper and the service is a lot better.
Sent from my HTC Vision using XDA App

well, that's probably why. I'm on att, but i do hate their new "decisions" they've been making..but yeah, tmo probably has a little less power in that area thanks to it being AT&T's hq.