Develop Bugs

Very bad WiFi connection?

I apologize if this has been asked before. I searched (possible that I didn't search hard enough) but couldn't find anything.
Anyway, is it normal for the EVO 4G to have pretty pitiful Wi-Fi? What I mean is that I get terrible reception. My girlfriend's blackberry and my two brother's 2nd gen iPod Touch's get great Wi-Fi throughout the whole house. Both of my parents have notebooks and they don't have any issues either. If I'm about an inch from the wireless router I get full bars and 12mbps down (it's a G router) 12mbps up (according to the speedtest.net app), but the connection speed and signal immediately drops a significant amount as soon as I leave the room. The other devices don't have this problem. They maintain most of the speed and only lose a little bit of signal strength.
I know Sprint released an OTA update prior to Froyo that was supposed to address WiFi issues, but I was never able to do it because I was rooted and running a custom ROM (not based on that OTA update) prior to that. Now I'm running the latest Cyanogen nightly and I still get pitiful Wi-Fi
Anyone else experiencing similar issues?
Thanks!

Have you flashed the latest radio's?
My wifi reception was mediocre at best on 2.1, and when I went to Fresh 3.1.0.1 Froyo it pretty much was the same. Funny thing is though, I had only flashed the most recent radio (.28), I hadn't flashed the wimax radio because I don't live in a 4g area and didn't see the need for it. A few days after I flashed the new rom and radio I decided that it would probably be good to keep everything up to date regardles of whether it was needed or not, so I flashed the latest wimax radio. All of a sudden I have excellent wifi reception, before I could barely get a working wifi signal 20 feet from the router, now I get the same signal I was getting at 20 feet from the router 75 feet away.
To tell you the truth, I have no idea why it did this after flashing the wimax radio, as I was under the impression that the wimax radio had nothing to do with wifi, could be a coincidence, but it worked for me. The highest I ever got before at 20 feet from the router was 2 bars, now at the same place I get full bars, and I now get 2-3 bars at the opposite end of the house from the router where I got no wifi signal at all before.

wfrandy said:
Have you flashed the latest radio's?
My wifi reception was mediocre at best on 2.1, and when I went to Fresh 3.1.0.1 Froyo it pretty much was the same. Funny thing is though, I had only flashed the most recent radio (.28), I hadn't flashed the wimax radio because I don't live in a 4g area and didn't see the need for it. A few days after I flashed the new rom and radio I decided that it would probably be good to keep everything up to date regardles of whether it was needed or not, so I flashed the latest wimax radio. All of a sudden I have excellent wifi reception, before I could barely get a working wifi signal 20 feet from the router, now I get the same signal I was getting at 20 feet from the router 75 feet away.
To tell you the truth, I have no idea why it did this after flashing the wimax radio, as I was under the impression that the wimax radio had nothing to do with wifi, could be a coincidence, but it worked for me. The highest I ever got before at 20 feet from the router was 2 bars, now at the same place I get full bars, and I now get 2-3 bars at the opposite end of the house from the router where I got no wifi signal at all before.
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Awesome I'll give that a shot!
Yeah it makes no sense at all, and even if it was only a coincidence I'm still willing to try it. I too upgraded to the latest radio but skipped the 4G radio update because for 1, my area doesn't have 4G, and because the ROM I'm currently using doesn't support 4G yet
Thanks again! I'll report back with my updated findings!

Unfortunately I don't think I helped my wifi signal definitely worth a shot though. I'm going to Nandroid backup my cm6 and flash to a rom based of sprint's Froyo update to see if wifi signal strength increases.
Sent from my EVO 4G using the XDA app.

Evo 3G really slow, connecting from out of state?

Hello, I have noticed that ever since I have gotten my EVO that the 3G speeds are insanely slow. I've ran speedtests all over the Los Angeles area and they average download speed never exceeds 1 Mbps. Anyways, I have been without proper internet since I have moved, so I have been USB tethering to my PC. This has compelled me to look into the slow 3G matter more. I ran a speedtest from my PC browser and noticed that the central server(gold star) it recommends is in KS and im in CA. This is suggesting that the best speedtest is in KS, meaning that I am probably getting 3G connection out of state
Is this even possible? And how can I adjust my 3G connection?

Well there are never radios which could potentially help, but a lot of that data speed just varies.

Biofall said:
Well there are never radios which could potentially help, but a lot of that data speed just varies.
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Click to collapse
Thanks for the suggestiom, i've already updated the PRI, WiMax and Radio to the latest(I never read about NV or HBoot updares, so i'll stay away from those for the time being). I just updated to the deodexed version of the latest rooted HTC sense 3.70 update. Results have been constant from stock up until this point though.

Yea my 3g at times are like but I notice it when I flash different radios & prl from new to old they say u should always stay updated but notice the best results when I use the old radio n old prl but now I use the old radio and the new prl 1.90 get results n u should playing with the home agents
YKGHTC EVO XDA

I would have agree with the OP. I live in the Atlanta GA area and typically where I would I get 5+ bars of signal, but I get speeds averaging .600 mbps, its ridiculous. With my old Hero I would always get +1.5 mbps in the same area. Now there have been times where I would get 1.5 to 2.1 mbps on my Evo on 3G... but a lot of the times it would only last for a day or 2. Then I come back to work the next morning and these speeds are back to being craptastic even while still displaying 5+ bars.
At home its always been worse. But I would still be able to run Pandora and run a 4 minute or less youtube video on regular quality without too much stutter. Now I wouldn't dare use data like that on my Evo w/o flipping on WiFi now though. Its pretty ridiculous at this point...

[Q] 4G Connection Issue

Hi guys,
I can't seem to get a stable 4G connection on my Epic 4G for some reason. When I toggle the "4G" to "ON", it would connect for a split second and immediately Disconnects and tries to connect again and again. My friend tested his phone (Nexus S 4G) and he connects just fine with data speed of 3,000kbps on Speedtest compared to my miserable 600-700kbps. I've also tried testing this in several different areas including major cities that supposedly cover "4G" and it does the same
I'm currently running SRF 1.2 ROM on Genocide 2.0 Kernel but I believe this issue was present even before rooting my phone. I also tried using different modems (EB13, EC05, EE03, EF02, EG22, EH17) but it made almost no difference to my 4G connection.
Does anyone have any suggestion on this??? I would really like to experience my 4G connection on my supposed 4G phone.

I have the same set up as you, and the same spotty 4g. Sometimes it's very hard to keep a stable 4g connection even in areas where I know 4g has been strong. It disconnects, or it pretends that it is connected but data really isn't going through.
Though, 4g is kinda new to my area and there are rumors that it's still in testing phases. Also, I don't have any input from other 4g users here. So in the end I'm not sure if its just my epic, or if there are wider issues.
Sent from a secret underground bunker

Strong 4g signal
I am also running SFR 1.2 and I get very strong/stable 4g speeds. I live in Chicago (Sprint 4g has been here for a while), and I get 3-4Mbps in my apartment on 4g. This is enough to do things like play Xbox Live or Skype using my 4g. I have noticed that while traveling on trains in the area the connection tends to go on and off, but I would say that overall, I usually have a great connection.
This may just be in your area, where are you located?

mjben said:
I have the same set up as you, and the same spotty 4g. Sometimes it's very hard to keep a stable 4g connection even in areas where I know 4g has been strong. It disconnects, or it pretends that it is connected but data really isn't going through.
Though, 4g is kinda new to my area and there are rumors that it's still in testing phases. Also, I don't have any input from other 4g users here. So in the end I'm not sure if its just my epic, or if there are wider issues.
Sent from a secret underground bunker
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I have the same issues, even though the Sprint coverage map shows I should be able to get 4G inside my house.
After researching, what I have found is you must find the nearest Sprint tower that has 4G, hold your left hand directly on the control board of the tower, and while placing your right big toe directly on the battery of your phone (must be the right big toe, the left big toe will not carry current correctly), you must complete the following key sequence on the dialer (###WTF***4G###***). Only then will you receive a 4G signal. Now be aware this will only enable the signal to last for 15 seconds. If you need more time that that, you must repeat the process. Oh...and By the way...This will only get you 1 bar of 4G service. I will be working on a detailed guide for 2 bars. There is no known method to actually get 3 bars of 4G service!!
Sorry, but this is a good of an explanation as anyone from Sprint has given me.
You may now return to your normally weak 3G Sprint signal.

Goodroid said:
Hi guys,
I can't seem to get a stable 4G connection on my Epic 4G for some reason. When I toggle the "4G" to "ON", it would connect for a split second and immediately Disconnects and tries to connect again and again. My friend tested his phone (Nexus S 4G) and he connects just fine with data speed of 3,000kbps on Speedtest compared to my miserable 600-700kbps. I've also tried testing this in several different areas including major cities that supposedly cover "4G" and it does the same
I'm currently running SRF 1.2 ROM on Genocide 2.0 Kernel but I believe this issue was present even before rooting my phone. I also tried using different modems (EB13, EC05, EE03, EF02, EG22, EH17) but it made almost no difference to my 4G connection.
Does anyone have any suggestion on this??? I would really like to experience my 4G connection on my supposed 4G phone.
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Click to collapse
Whts your location cause I am having the sam exact problems with my epic and evo!
Sent from my SPH-D700 using XDA App

[Q] Poor cell signal- often roaming

I've had the E4GT for less than 24hrs, and biggest issue is the less than splendid cell reception. Sitting in my living room i used to get 2-3 bars- this thing constantly throws into roaming. I updated my PRL, Profile, and Firmware. Didn't know what the latest PRL was that was out.
I know this thing has only been out a few days, so i understand some bugs. Is anyone else having signal issues where they didn't before?
I'm really trying rock this for a couple days stock before i root the hell out of it, lol.
Thanks for any input. Link me to resources if you like, i have no issues reading up on my own if this is a common issue.

fattmann said:
I've had the E4GT for less than 24hrs, and biggest issue is the less than splendid cell reception. Sitting in my living room i used to get 2-3 bars- this thing constantly throws into roaming. I updated my PRL, Profile, and Firmware. .
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Click to collapse
Ditto! I even have an Air Rave and reception is poor.

I am running into the same situation. It keeps on switching between roaming and normal for no reason. I usually get pretty good reception in my room. It will sit there at about 2-3 bars reception, few minutes later its roaming. The phone hasn't been moved at all.

This happened to me 20 minutes after I got it on Friday but after a reboot it was fine. No problem since then. I assumed it was a network issue.

Same issue here, even with Airave (evo next to SG2 has better signal)

Huh, I'm getting better reception than my Evo 4G. The Epic Touch now works in my condo elevator at basement garage level where the Evo would consistently drop a call.

has anyone did a signal strength comparison instead of bars. they may have different values per bar on different phones.

Returns are warranted?
Sent from my SPH-D710 using XDA App

I wonder if there is a difference in radios or something. My experience tells me that this radio is finicky as heck, and I don't know why.
Is there a way to find out if Samsung used different parts or suppliers to make the Epic Touch?
I remember HTC doing this with their phones, and some would be fine, and some would not (different issue each phone, lol)

Mine was doing the same i switched the phone to only go on sprints network and has been fine. I rarely need true roaming but it would go into roaming even when sprint service was available.

I think Sprint may be doing network upgrades/maintenance. The same phenomenon occurs on my Epic 4G Touch and multiple Nexus S 4G's. I'll see signal jump from -106 dBm to -76 dBm and in some places go into roaming. Nothing to worry about as long as it works. They may be upgrading equipment to support EVDO rev B hopefully.
I get much better 4G reception on the E4GT than the NS4G, FWIW.

My signal isn't as good as my photon was better then my evo 3d. I usually don't roam much. Trust me when I say this, reception could be worse lol ill deal with it!!
Sent from my SPH-D710 using Tapatalk

I hope the poor signal has to do with upgrading to EvDo RevB on Oct7

Thank God I am not alone. My cell reception too is finicky. In places my old evo (which my girl use now)have weak signal my epic touch would roam in and out. Sometimes it won't leave roaming even after I get to a known good reception area. Only a reboot would kick it back to sprint network. I read somewhere that calling sprint and having them reset my phone on their end might help. I am going to try this out as soon as I get home.

What can't Note 2 switch to 4G when 3G in use?

I've noticed a network behavior I did not have on my EVO 4G. The Note 2 can't switch to 4G when it's busy using 3G. You could be standing under a 4G tower and the phone won't switch if, for instance, you're downloading a file. My EVO 4G would switch between 3G and Wimax no problem.
Is this a hardware limitation? Software problem?

Could be a difference between Wimax and LTE connections. I have never noticed this issue, but I also only saw a Wimax signal a couple of times. I had the OG Evo and then the Evo 3D, but rarely ever saw a Wimax signal. With my Evo LTE, my entire area is blanketed with LTE, so I'm never switching between 3G and LTE in the middle of a download. I'll try to test out this scenario within the next few days with both my Note 2 and my Evo LTE. If I do have any weird findings with either, I'll call Sprint and activate my black Evo LTE and see how it handles the data connection transition. That way I will have tested the specific data transition with 3 different devices, and should be able to come up with a some what conclusive decision with what's going on. If someone else has a Wimax device and is in a Wimax area, it would be nice if they could compare that side by side with their LTE device! I still have my Evo 3D, but like I said earlier, I'm not near a Wimax area for testing...
Sent from my White Note 2 using XDA Premium

Hmmmm. Interesting. I never noticed that behaviour on my NII or EvoLTE. I still have my E4GT laying around so maybe I'll activate it and see what happens. I've been lucky in my area seeing as we had WiMax coverage even before the release of the OG Evo and are pretty well covered with LTE.
Sent from my SPH-L900 using Xparent Skyblue Tapatalk 2

I've noticed OPs issue. The same kinda thing will happen when I am driving away from my home and my phone tries to hang on to my signal booster. Once I actually loose the connection my phone will jump onto 3G and usually by that point I have Pandora opened and trying to play. It wont switch to LTE until either the song is fully buffered (witch in this case doesn't happen because the 3G at this point sucks (connected to tower)) or I go to Airplane Mode and shut off all radios and then turn off Airplane Mode. The LTE will come right up and I have no data issues.
If I'm not near my signal booster, like at work, and I am at my desk getting LTE, when I put my phone in my pocket and walk around it will drop to 3G. When I come back to my desk and try to start using an app that requires data, it wont jump back to LTE until I either close the app that is pulling the data, or do another Airplane Mode toggle.
I think all it is, is just the scan times between searching for an LTE signal (I think like 30 seconds and not every 1 second) to save battery. I could be wrong though. It is annoying to have to go through this routine every day though.

I've never payed attention to it before but now I do see what the op is talking about. Mine won't switch either
Sent from my SPH-L900 using xda premium

I think it's a bit random in my experience. It's it currently downloading something, it'll stay. But I've seen it switch it though while streaming a movie/show/event. I've had the GN2 get suck where it switch towers, but wasn't really connecting, which required the airplaine mode on/off trick.

spotopolis,
You hit right on the kind of scenario I am experiencing. I'm in the car listening to a streaming podcast or streaming music. And because the car is moving, the phone sometimes switches to 3G and will not get back on to LTE unless I kill all network access. It's like the phone needs a moment to breath before attempting to connect LTE.
This would not bug me so much if 3G had a data rate better than 50kbps. When I'm stuck in 3G, forget streaming or downloading anything. Very frustrating.
Trying to figure out if this is a limit of Note 2, LTE, Sprint's LTE or a bug.

It's an LTE issue. I've experienced the same behavior with 4G when I was in NY last weekend. Soon as I stopped Pandora and 3G went idle 4G came on. And no that is not an issue with Wimax devices. Coming from an E4GT and Evo 3D covered in Wimax coverage here in Hartford CT 4G automatically connects and overrides 3G even if 3G is active. However that's an issue too because the 3G to Wimax handoff sucks which leaves your data hanging for a sec. I usually have to stop my downloads and restart them while on the new 4G connection lol
Sent from my SPH-L900 using xda app-developers app

RayTrue04 said:
It's an LTE issue.
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Click to collapse
I thought this was advanced technology. Seems to be a huge detail to miss.
However that's an issue too because the 3G to Wimax handoff sucks which leaves your data hanging for a sec. I usually have to stop my downloads and restart them while on the new 4G connection
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Click to collapse
That would be a software issue, not Wimax problem. I had some apps that handled network switches very well. That includes going from cell networks (3G/4G) to WIFI. Perfect example is what I noticed using streaming music on my EVO 4G. (The follow is true for these apps many versions ago.)
1. Slacker, terrible making switch. 99% would stop playback.
2. Pandora, better than Slacker. Could pause during playback but would pickup if network regained soon.
3. Google Music, best of the bunch. Can handle network jumps very well. I think partly due to caching the next song while playing current song.

I thought i was the only one having this issue.... good to know.

I've never had this problem. My n2 has no problem switching from 3g to 4g. When I'm driving while listening to Pandora, I hit areas that only 3g and phone shows 3g. Then afterwards it goes back to 4g with no problem. It does it effortlessly and on a daily. I live in Chicago and we are lte for the most part but I know certain suburbs do not have 4g and my n2 switches without a problem. Guess I'm lucky.
Sent from my SPH-L900 using xda app-developers app

Interesting thread. I'm seeking an answer too. FWIW I don't own a Note 2 but also noticed this behaviour, with my SGS3. I created a thread some time ago (http://forum.xda-developers.com/showthread.php?t=1989176) but there was little interest, which surprised me, considering how annoying it can be.