MIUI Connection Drops - Galaxy S II Q&A, Help & Troubleshooting

I'm using the latest MIUI official release as of the date of this post. I keep my phone in 3G only mode due to poor connection at work. At home connection would stay in 3G anyway. Works fine on touchwiz and cm7 roms.
On MIUI I lose all connection to Tmobile. Not just data. Sometimes it comes back in a few seconds, sometimes it requires a reboot. Tried 2 different modems that work fine usually. Anyone else or am I alone in this issue?
Ephumuris

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[Q] WiFi on, connected, full strength and not sending anything.

So I have my Fascinate running CM7 with the Glitch Kernel, no OC, just for the stock UV, the problem I have is that I can connect to WiFi, everything seems fine and then a few minutes later everything stops loading, as if there was no connection. turning off WiFi and turning it back on helps about 80% of the time but still an issue, the reason this is so big is that at my house we have no reception at all, Verizon sent us a Network Extender but it simply does not work on any phone and I know for a fact that my Network is fine. (We have twin N600s one routing one access point) Additionally the issue is at the local college as well. Any help? Is there an issue with CM7 or the Glitch kernel?
I am having the exact same problem. For example, market will stick at "Loading..." while on wifi but when I turn wifi off, my 3g connection will load market fine. It's so weird because I have full wifi signal and it is definitely not my router. It didn't start until I flashed the glitch kernel. Has to be something there. Maybe there is a workaround?
Im running glitch v13 and wifi works great. sometimes after a reboot ill have to toggle it off/on...
iliketrains said:
I am having the exact same problem. For example, market will stick at "Loading..." while on wifi but when I turn wifi off, my 3g connection will load market fine. It's so weird because I have full wifi signal and it is definitely not my router. It didn't start until I flashed the glitch kernel. Has to be something there. Maybe there is a workaround?
Click to expand...
Click to collapse
I had that Market problem and it disappeared when I got a new router. A full reset/wipe of router may have fixed it also. Happened on 2 CM7 phones (Droid2 and Fascinate), but not a stock 2.3 Droid2.
On my CM7 Fascinate, I usually also have to toggle wifi after reboot.

[Q] ICS Wifi Disconnect?

Every time I flash a ICS rom my wi fi becomes inconsistent and constantly disconnects. If I go back to any rom with 2.x.x its fine. I tried the Wi-fi fix but that doesn't seem to help either. Any one have any suggestions?
Try another Modem Set ?
I use KI3 now, it works very well both wifi / 3g.
As I know , ICS roms have lots 3g connection problems, but not much wifi problems.
Have you tried diffrent router?
Sent from my GT-I9100 using XDA App
wifi failure
I am having a wifi problem as well. It says authentication issue

Problem with cm9 and wifi

Hi i went from stock ics on my ray to cm9 by followingnexact step by step guide provided by cm9. Used their kernel as well. Have never modded my phone before. Having a small problem with wifi though. After my phone has been asleep for a while, if i wake it up the wifi icon in status bar is no longer blue its a dark grey and i can no longer browse anything or use the internet. Ive tried rebooting. I did the whole wipe cache etc when installing cm9. In wifi settings in advanced ive also left the setting to "leave wifi on when sleep" checked. If i turn off and on the wifi connection the phone ofcourse is able to reconnect again the icon is blue and i can connect. It not jsut a one off thing its been happening since i isntalled the rom.
If i wakek from sleep a few minutes later i have no issue with wifi. Its only when its been sleep for a while do i have this issue.
Any solutions?
I have the exact same problem but for me it's even bigger, whenever i turn on wifi on my modem, i can connect to internet on my phone, but after awhile i lose my connection completely, on my phone and on my pc also, the only way to get it back is to reset my router and wait for like 5-10minutes...
dellboyan said:
I have the exact same problem but for me it's even bigger, whenever i turn on wifi on my modem, i can connect to internet on my phone, but after awhile i lose my connection completely, on my phone and on my pc also, the only way to get it back is to reset my router and wait for like 5-10minutes...
Click to expand...
Click to collapse
If its also an issue with your. Pc then your issue might be also the router.
My other devices actually work fine in my case its oky this phone that has issues. Macbook iphone ipad nexus s no problems with those.
Same issue here. I can see available networks but unable to connect. There should be no problem with the wifi router as all my other devices work well and I have tried another router. Now I have to flash back to stock firmware.
illus4 said:
Same issue here. I can see available networks but unable to connect. There should be no problem with the wifi router as all my other devices work well and I have tried another router. Now I have to flash back to stock firmware.
Click to expand...
Click to collapse
Your issue seems more severe than mine. Mine actually connects and works, just that when it wakes from long sleep it wont work until i turn off and on wifi.
I get this problem too, but my problem even worse than yours. My wifi lose it's connection after a while, but the icon on status bar shows it's connected, running ping test, browse, even play store can't be accessed. I pinged the router and got unreachable.
And yeah, this problem occurs when I'm using all ICS based rom..
Anybody has any idea if this is a known problem, or if its just us few having thisissue?
illus4 said:
Same issue here. I can see available networks but unable to connect. There should be no problem with the wifi router as all my other devices work well and I have tried another router. Now I have to flash back to stock firmware.
Click to expand...
Click to collapse
I have same problem. I have SE xperia mini with CM9. WiFi worked fine until yesterday. Now phone can't connect to AP (full signal - try connect -> signal drops down), but sharing 3G internet over WiFi works fine. I cleared dalvik cache, but that didn't help.

data connection broke despite full bars

hey there,
i am on cm 9.1.0 now. i was using nightlys before and before that the latest nightlies of cm 7. since the may- or june-nightlies i experienced some problems with my data connection (3g or H). despite full and blue bars in the statusbar with an 3g or H, sometimes i did not have any connection. i did not have those problems with wifi. and sometimes, when i was outside and surfing, the connection broke off from one page to the other. in some cases entering flightmode and turning it off again helped. but not always...
could it be that i need another modem-fw?
how would i do that?
where do i find my current version?
tyvm!!
ps: see my settings:
kweso said:
hey there,
i am on cm 9.1.0 now. i was using nightlys before and before that the latest nightlies of cm 7. since the may- or june-nightlies i experienced some problems with my data connection (3g or H). despite full and blue bars in the statusbar with an 3g or H, sometimes i did not have any connection. i did not have those problems with wifi. and sometimes, when i was outside and surfing, the connection broke off from one page to the other. in some cases entering flightmode and turning it off again helped. but not always...
could it be that i need another modem-fw?
how would i do that?
where do i find my current version?
tyvm!!
ps: see my settings:
Click to expand...
Click to collapse
Might be a fast dormancy settings issue, try flipping the setting and see if that helps.
fast dormancy? flipping settings? were would i do that? thx!!

[Q] Wifi and data on at the same time, limited internet.

Rooted stock ROM Verizon I605 running 4.1.2.
I was in Korea for the past 6 months and just got back the other day. Before I left, I never had any problems, but since returning, my wifi and data are on at the same time, and it's causing me problems. Here's what's going on:
If I just have mobile data on, everything works as it should. If I turn on Wifi, it will connect, but the data connection will also remain, and my internet speeds will become spotty. If I turn on mobile data and just try to use wifi, the Wifi icon appears (with the orange/green arrows indicating activity), but apps don't connect. Facebook automatically tells me "No Internet connection," Opera won't load pages, Google Talk can't sign in, etc. If I turn mobile data back on, things work again, albeit slowly.
The strange thing is if I turn on Airplane Mode and then turn it off, leaving data off, my wifi will work 100% normally. If I try to turn on mobile data again, I get the same issue.
While I was away, I replaced the SIM card so I could use my phone over there. I messed with some APN stuff thinking I would be able to get data on my phone in Korea, but that didn't work out so I returned my APN settings to default. I have a feeling that's the source of my problems, but I have no idea how to fix it. I tried restoring my APN settings to default through the settings, but that didn't fix it either.
Any help at all would be appreciated!
If it helps I have been seeing the same thing. I'm on CleanRom 3.5 (Verizon Rom base) and PB&J kernel. It seems to be hunting between them even when in strong wifi signal.
Interestingly enough it's not doing it right now.
I'll keep a closer eye on it now.
Sent from my SCH-I605 using xda premium
In my case, it's a constant problem (unless I manually go into airplane mode, like explained). It doesn't work sometimes and not work other times.
I'm trying to use wifi at home, so signal strength isn't an issue either.

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