Slow wifi - Galaxy S III Q&A, Help & Troubleshooting

I just flashed lh1 official rom with odin but my wifi is really slow on this fw...when i was on li8 i used to get 20mb download speed but on lh1 i get like 2 mbs with a lot of drops..
Pls tell me how to fix my wifi speed
Ps. Im unrooted now
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Any1
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Unrooted? Well.. u have to be rooted to flash another kernel xD
Wifi connection is kernel related, so i suggest u flash another kernel
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Related

[Q] Really slooooow internet

Hi I'm on orange in the UK and I'm having major problems with the sg2 and internet.. my wifi works fine.. but 3g n Co is proper slow almost not working at all.. my misses has a galaxy ace on orange and her internet is fine when mine isn't working...
I'm using the latest miui
Was winding if there's any fixes or a modem I need as its pissing me off I want to get rid of this phone.. I read something awhile ago about a dial code and disabling h+ but I don't think u can do that on miui....
Any info would be great as I reallly want to fix this
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Bump some must know Simon on how to make browsing faster
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mxn- said:
Bump some must know Simon on how to make browsing faster
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First of all: who's Simon?
It could be something to do with when you flashed miui. Have you tried flashing back to the original rom? Was 3G working before you rooted?
Was ment to say someone..
I'm gunna try stock once u get on a computer it says 3g nearly all the time but nothing loads and when it does its after a few mins
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What's the best modenlm?
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mxn- said:
What's the best modenlm?
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I don't know but I'd guess the latest one in the dev forum. To be honest I'd flash everything back to normal, if it's still going slow then it could be something up with your phone. Then you can get a replacement.
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Problem after upgrading

After I updated my phone I noticed that my internet speed reduced from 2mbps to 60kbps please help me
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If you have a I9100 or I9100T (check the sticker under the battery), you can try flashing some of the modems in this thread until you find one that works well for you.
Or you could go back to whatever stock firmware you were running before you "upgraded". I presume you made a note of the details of the firmware you had on your phone previously ?
sm_abu said:
After I updated my phone I noticed that my internet speed reduced from 2mbps to 60kbps please help me
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Upgrade from what to what might give a clue .
jje
this phone is bought from Singapore and I'm using it in India. Previous Verizon i 3.3
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WiFi calling don't work fastamaze 2.1

I have flashed fast amaze 2.1 afer flashing WiFi calling does not need some help .
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Mohammed Atif said:
I have flashed fast amaze 2.1 afer flashing WiFi calling does not need some help .
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you should move onto speedrom 7.5....

slow data speed

hi mate,currently im on miui india and i found that the data speed is really slower than samsung based custom rom even though miui india also based on samsung rom,can i ask what may cause this happened? is the kernel problems or the rom problems? is there anyway to fix it?
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Try look for a modem for your original firmware.
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Internet on wifi is slow

I recently upgraded to 4.3 and now my internet over wifi is really slow, especially when watching videos on YouTube or any streaming video. Speedtest comes out with 9 - 10mbps. I never use to have this problem before when I was running 4.1. However 3g is fast and 4g is ok. I have tried connecting to other wifis and still the same problem. Can somebody help me pliz.
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kaivitipower said:
I recently upgraded to 4.3 and now my internet over wifi is really slow, especially when watching videos on YouTube or any streaming video. Speedtest comes out with 9 - 10mbps. I never use to have this problem before when I was running 4.1. However 3g is fast and 4g is ok. I have tried connecting to other wifis and still the same problem. Can somebody help me pliz.
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Wats ur modem?
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Im using NetComm wireless... I even tried with a TP-Link modem and its still the same.
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kaivitipower said:
Im using NetComm wireless... I even tried with a TP-Link modem and its still the same.
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I mean ur baseband version. U can find it at about phone.
There it is
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kaivitipower said:
There it is
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Flash a newer modem.
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JellyYogurt said:
Flash a newer modem.
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please JellyYogurt can you help me with a link to a new modem?
i m using I9300 with 4.3 and baseband is I9300XXUGMK6
wifi can connect but its very slow, mobile network is ok
fabu1234 said:
please JellyYogurt can you help me with a link to a new modem?
i m using I9300 with 4.3 and baseband is I9300XXUGMK6
wifi can connect but its very slow, mobile network is ok
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Well I am using mk6 too but seem no lag. Guess different location different modems.
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---------- Post added at 06:05 PM ---------- Previous post was at 05:59 PM ----------
Oh. U have to flash a new rom to get new modems. Try flashing custom roms tat have different modems. Or download stock rom from sammobile and see the modem the rom is on.
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I got this now but wifi tends to slow down after a while. It goes fast after factory reset. But then i have to keep downloading apps! >:{
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