Develop Bugs

Wifi and modems

Mods please delete my thread in the other forum I posted in the wrong forum.
Is wireless affected by modem type?
I just started using thunderhawk and shadow kernel. Modem is still eo5. I am noticing my wifi signal is not what is used to be when I was on frozen/genocide.
Will a different modem make a difference?
Sent from my SPH-D700 using XDA App
Sent from my SPH-D700 using XDA App

Samsung turned down the radios in Gingerbread to conserve battery. So wifi is lower in signal, gps locks on less satellites (without the fix) but 3G and 4G seem unchanged.
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Great
Anyway to turn the wifi signal up?

Not that I know of. I don't think anyone has looked at it.
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I have seen reduced wifi and 4G data throughput speeds ever since installing EI22. I don't test 3G. Multiple ROMs and multiple kernels. Seems I can get a bit of a boost in speed if I disable the slowest clock speeds on my device.
Had no such issue with EC05 SRF and Genocide.
That's my experience, anyway.

The OP was asking about wifi signal strength.
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kennyglass123 said:
The OP was asking about wifi signal strength.
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I believe they lowered the power consumption on the radios all the way around. But with wifi don't pay attention to signal bars cuz the devs or samsung change the bars between builds. Example you could have 100% signal but only show 1 or 2 bars depending on the decibal levels they have each bar set to. The only thing that is accurate is a wifi signal analyzer that shows you your signal in decibals.
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jbadboy2007 said:
I believe they lowered the power consumption on the radios all the way around. But with wifi don't pay attention to signal bars cuz the devs or samsung change the bars between builds. Example you could have 100% signal but only show 1 or 2 bars depending on the decibal levels they have each bar set to. The only thing that is accurate is a wifi signal analyzer that shows you your signal in decibals.
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Click to collapse
I think a few people noted that they don't have the same range they had on Froyo with their wifi, comparing the same distances from the router.

kennyglass123 said:
I think a few people noted that they don't have the same range they had on Froyo with their wifi, comparing the same distances from the router.
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Click to collapse
I would have to disagree I have analyzed my network in db's since eclair with this phone. I have identical db's in the exact same locations just less signal bars. Its all in peoples heads. So don't believe everything you read. I install wifi networks for a living and use this phone as a testing tool cuz its faster and easier than my laptop. Another thing some people don't understand is interference could be the issue of them not getting the same results. If you have 20 wifi signals broadcasting like in apartment it will degrade your signal terribily. I don't have any other wifi signals around me so my signal is constant no interference.
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jbadboy2007 said:
I would have to disagree I have analyzed my network in db's since eclair with this phone. I have identical db's in the exact same locations just less signal bars. Its all in peoples heads. So don't believe everything you read. I install wifi networks for a living and use this phone as a testing tool cuz its faster and easier than my laptop. Another thing some people don't understand is interference could be the issue of them not getting the same results. If you have 20 wifi signals broadcasting like in apartment it will degrade your signal terribily. I don't have any other wifi signals around me so my signal is constant no interference.
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Thanks for that input J.
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Phone sometimes stuck searching for signal?

Sometimes my phone, even when there definitely is signal, would say searching for signal. It would take a couple reboots before I get my signal back. Even tried manual registration, it would get stuck registering on the tmobile network. Im running darkside v8, could anyone help with this annoying issue?

Flash another radio?
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Trying lc8 radio , hope this solves the issue
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For Darkside ICS roms, you need to use their modded radios, if you don't flash theirs, you will get data and signal issues. Check their thread for downloads.

I tried this , still didn't help. I switched to cm9 and installed the recommended uvle1 radio , and I still had the same problem. Either I had to manually register on T-Mobile or keep rebooting until signal came back (I'm in a full signal area)
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agentg1001 said:
I tried this , still didn't help. I switched to cm9 and installed the recommended uvle1 radio , and I still had the same problem. Either I had to manually register on T-Mobile or keep rebooting until signal came back (I'm in a full signal area)
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I'm pretty certain this is an ics issue for some people. I had same thing last night, flashed gb, instant signal. If yours is consistent then I suggest running logcat to see what android is doing .
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My wifes is doing the same thing. It hasn't ever been rooted. Sometimes all she can get is E or G and then it drops. We have 3G area but it doesn't pick it up. Maybe I need to root it and flash a new radio. Any thoughts would be great. Thanks
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Hmmm strange , actually, mines worked fine before I upgraded to an ics rom , either cm9 or darkside evo . No signal drops whatsoever , not sure what's going on now , sim card seems to be fine , no drops In a froyo sidekick 4g
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A strange update on this thread, my problems with signal loss are now gone now that I'm on cm10
Edit: when it boots I have to make sure its 2g/3g setting otherwise it boots with no signal
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Disregard what I said in my previous post, I'm really hoping for a real solution/possible flaw with my gs2. I had to move my sim in my sidekick 4g, because my gs2 didn't seem to pick up any signal, and registering on the network would take forever . This is the biggest problem I have with my gs2. I can't always be moving my sim to the sk4g everytim my gs2 doesn't want to pick up signal, its very inconvenient. If it helps at all, I've had this issue every since I've gone beyond gb (this only seems to happen in ics and jb)
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Wifi poor i747 bell

Hi all
Are there any users who've used a different radio to improve the poor wifi signal on the galaxy s3?
There was a lengthy thread about this issue but haven't read or found a solution. My wifi drops off consistently and standing beside my router, I only ever get 2bars of signal strength.
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perry_henis said:
Hi all
Are there any users who've used a different radio to improve the poor wifi signal on the galaxy s3?
There was a lengthy thread about this issue but haven't read or found a solution. My wifi drops off consistently and standing beside my router, I only ever get 2bars of signal strength.
Sent from my SGH-I747M using xda app-developers app
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Click to collapse
Up until today there was only one radio that would work. Today all the major Canadian carriers released an update and part of that was an updated modem(radio). Check for updates on your phone or through KIES. I haven't seen any pre-rooted versions yet but give it time.....

Thanks, as far as radios I am curios which radios we can flash on our s3's as per region or carrier

perry_henis said:
Hi all
Are there any users who've used a different radio to improve the poor wifi signal on the galaxy s3?
There was a lengthy thread about this issue but haven't read or found a solution. My wifi drops off consistently and standing beside my router, I only ever get 2bars of signal strength.
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Click to collapse
The radio has nothing to do with WiFi, the kernel does. My Bell S3 picks up WiFi just fine. It might be your router that is the issue? Have you tried resetting it?
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thegregulator said:
The radio has nothing to do with WiFi, the kernel does. My Bell S3 picks up WiFi just fine. It might be your router that is the issue? Have you tried resetting it?
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Router connects well to tablet, laptop and sonos. I literally have to be in a 3' radius to get 3-4 bars of signal strength.
Speedtest was about 3Mbps down. Brutal. I posted in another post but I'll do it again here. Samsung is taking my phone back since it's within the one year period. Service time frame 2-5 weeks. They emailed me a UPS prepaid shipping to print out to ship it to Ontario for repair or replacement.

4g lte not working

I am running the latest cm10 nightly and I haven't been able to connect to 4g lte for the last week or two. Is anyone else having this problem? Has anyone found a solution?
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Which market are you in? There's a chance that the tower was only on for testing and has since been turned off. There's also a chance that another tower closer to you is currently being upgraded, so the phone is trying to connect to that tower's LTE, getting rejected, and falling back to 3G. That's what's happening to me, and it's frustrating because I had a steady 4G signal for a week and a half, then one day, it refused to stay connected to 4G for longer than a minute. Now, I just have to wait for them to finish the new tower.
The reason could be just about anything depending on your market.

I am in the Atlanta market which has been officially announced. Friends that live nearby have not been having this problem on stock ux software. I was wondering if cm10 has a big or something?
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HappyDuck13 said:
I am in the Atlanta market which has been officially announced. Friends that live nearby have not been having this problem on stock ux software. I was wondering if cm10 has a big or something?
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Actually, it has a couple LTE bugs. CM10 doesn't currently handle 3G/4G handoffs properly, so that could be part of the issue, but it holds a 4G connection fine if the signal is strong enough, at least from my experience. Another bug is that it will just stop making connections, and you have to wipe data to fix it. Have you tried toggling airplane mode? If that doesn't work, make a nandroid and try a clean install of CM10. I had to do that recently because it completely stopped connecting to 4G and barely connected to 3G. As soon as I booted up, 4G was back (didn't last long, but I explained that in my other post). If wiping data doesn't work, flash to TW and see if the problem persists. If it still doesn't connect, then you may have a hardware issue, but I think that's unlikely since it was working for you before. You never know, though.
Keep in mind, even though Atlanta's been officially launched, it's only about one third complete, so lots of towers are still being upgraded. It's possible you're facing the second issue in my first post, like I am. If so, then just concentrate on how much better it'll be when the new tower is finished.

EndlessDissent said:
Another bug is that it will just stop making connections, and you have to wipe data to fix it. Have you tried toggling airplane mode? If that doesn't work, make a nandroid and try a clean install of CM10. I had to do that recently because it completely stopped connecting to 4G and barely connected to 3G. As soon as I booted up, 4G was back (didn't last long, but I explained that in my other post).
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Happened to me several times. The best thing you can do is make a nandroid once you get your favorite AOSP rom set up to your liking, and restore to it once LTE stops working. I tried to get myself to go to TW but its just so slow

What is TW?
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TouchWiz

I have a similar issue. If i go into settings, about phone, and status I pick up LTE:13, but I get no connection or IP address so I have to change over to 3g. Is this a known issue, and if so is it being addressed? I am currently running nightly 10-14-2012 if it helps. Thanks
Edit: I've tried TW and it works just fine there. 14 down and 6 up.

Its likely to do with cm10. And the handoff issue like it was explained a few posts back. I love cm10 but data would work if u was lucky for 2 hours out of the whole day. So I'm on the leaked lih build. Just gotta wait patiently for the great devs to figure it out.
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Is there an issue with broken Lte after rooting like with wimax and evo?
Even if you are running the stock rom?
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No, not that I've heard about. You should be safe.

What about Google wallet breaking? Thanks
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eyecon82 said:
What about Google wallet breaking? Thanks
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Never heard of that happening, either.

[Q] Extremely weak wifi

Hi guys.
I don't know if its my phone or if this is the way the phone is meant to be, I have an extremely weak wifi signal. I am literally right next door to my router and I only get 3/4 bars for signal strength. As soon as I go up to the second floor, I get nothing at all unless I'm directly above my router. This is extremely frustrating at the moment. I decided to lurk around the forum to see if installing a custom rom would help and I ended up installing Jedi Invasion 2; it did not help at all.
It's just so frustrating that I have to use my mobile internet when I'm in bed instead of using my home internet. I don't understand this at all. Why is it so weak? Does anyone else have this problem?
Thank you.

Im with you on this......im staying tuned..
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Have you tried updating your modem to the latest version that was just released?

My modem is perfectly fine. I just dont understand how my old crappy blackberry had a better and stronger connection than my s3.
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I found the Wi-Fi performance increased a fair bit when I upgraded to 4.1.1. I can go a fair ways in my house before dropping bars. Wish I had run WiFi Analyzer before the upgrade so that I could actually compare RSSI.

Depends on the router freq. 2.4ghz and 5ghz. 5ghz can cause crappy WiFi strength issues. Change the settings around to 2.4 only and see what happens.
i727-ucle2-SkY IcS

My router does not support dual band. Like I said earlier, my blackberry has a stable connection while my s3 struggles.
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I had the same problem in 4.0.4 ICS but now on 4.1 JB it is working perfect. Before on ICS I had like 3-4 bars when I was 2ft away from the router. Now on JB I have full 5 stable bars no less with higher distance.

ShaolinMilk said:
My modem is perfectly fine. I just dont understand how my old crappy blackberry had a better and stronger connection than my s3.
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The modem he is talking about is a radio for the phone. Not the modem that connects you to the internet through your ISP.

Oh. Im still relatively new to this device so I never knew. How do I update the modem?
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ShaolinMilk said:
Oh. Im still relatively new to this device so I never knew. How do I update the modem?
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Well first thing your going to have to do is root the phone before you can update your modem.
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Att is rolling out jelly bean now through kies. Id just do that before you hit the modding route. Jelly Bean will update you too there latest and greatest modem and boot loader updates. Then root it and never look back
i727-ucle2-SkY IcS

So I went ahead and installed the latest modem. It made my signal even worst somehow. How do I restore back to the one I had?
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ShaolinMilk said:
So I went ahead and installed the latest modem. It made my signal even worst somehow. How do I restore back to the one I had?
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Click to collapse
Download it and flash it.

Im not exactly sure which modem it was.
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There's only three modems for each carrier. Try them all.
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