[Q] galaxy s3 signal dropping? - Galaxy S III Q&A, Help & Troubleshooting

hi all,
anyone having issues with signal dropping and calls droppimg on the galaxy s3?
Im with o2 uk and the missus is with 3uk and we both have the same issue with signal loss and calls dropping. even if we both have full signal calls drop an theres loss of signal for a few seconds then it comes back.
is this a known issue? surely both of our handsets are not faulty with the exact issue?
cheers,
ed

Yeah I have signal issues, I'm on giffgaff. I've tried flashing a few modems but reception and call drops are still here
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Related

Losing signal on Bell network

So I had the pnone fora few days now and I lose connection to data and voice at least 5 times a dat. The apn settings are all correct. Any reason for this?
anyone have any idea? Its driving me insane
Have noticed covering the bottom of the phone with my hand cuts the single in poor reception areas ... like west Wales coast. currently holding top of phone in landscape to get enough of a service to type this. but service is very poor here.
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Just to say on t-mobile in a caravan just out side of new quay...
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I have the similar problem on Telus, but it only happens to me after turning off/disconnecting WIFI when it's been on/connected for a few hours.
I can be on wifi all day but the connection to bell will drop randomly. gettingnerves now. think I'll sell this and get an iphone again.
same problem with telus.... i bought a bell sg2 and unlocked it and have looses connection and data like 5 times a day

3G signal dropping out.

This just started today but my 3G signal is sporatic going from 3G to 1X. Anybody experiencing this? My signal even drops completely.
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Disneycast25 said:
This just started today but my 3G signal is sporatic going from 3G to 1X. Anybody experiencing this? My signal even drops completely.
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Click to expand...
Click to collapse
Let me guess...
You are on an MTD ROM like MIUI CM7, (or some variation of CM7)...
The 3G data dropping out is a problem that comes and goes on many people's phones that can usually be temporarily fixed by toggling Airplane mode or a reboot.
There is no known fix at this time
But... if you are not on an MTD Rom, then disregard my reply
It's also a known fact that the Fascinate has a terrible radio chip. Whether on MTD, modified TouchWiz ROMs or stock, my signal constantly goes from 3G to 1x. Hopefully my wife(Nexus Prime) won't do that.

Awful signal strength

I bought an s3 a week ago on ebay. That was my first mistake the signal strength is awful browsing the internet without wifi is really bad it can take up to 5 secs to load google. Now my wife has an S3 with tmobile uk and hers is fine. Mine was originally on vodaphone but I am on O2 I have put her sim in mine flashed to the same stock rom and my s3 has still a poor signal normally two bars. Just tested I get -105dbm and 4asu. I can only conclude that after trying every network rom combination my phone is faulty. I had no joy with the ebay seller I am not sure I could take it to vodaphone as I was not on the original contract. Any idea guys how a resale affects warranty, ideally I would like the handset replaced or repaired. Lessen learned not to try and get an ebay bargain
How much did you pay for the phone??
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I've just looked at the status of my phone and I'm getting 95dbm and my phones fine, where do you live?? I live in hampshire on vodafone and the signal here is variable, despite living within a cats throwing distance to the cell tower (5mins walk)
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Have you tried flashing a different modem. I flashed lf2 modem and my signal strength was back to normal it was bad with lfb
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uronfire said:
Have you tried flashing a different modem. I flashed lf2 modem and my signal strength was back to normal it was bad with lfb
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Click to expand...
Click to collapse
Or their is that option.....+1 buddy
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As stated, try an alternative modem which has resolved my network issues previously.
If it is still not resolved, contact Samsung - don't mention eBay purchases - the serial number will show up fresh on their system (tested with known blocked handsets lol) they will organised a repair; and 9/10 times will not request a proof of purchase unless referring you to a local center; but this issue would be hardware related so they will request sending it in. Just ensure you go back to stock.
thanks for the info. I expect Samsung should repair anything as long as the iemi number is not reported as stolen.
tried the LF2 modem and its made no difference, however I have used an tmobile sim this morning, signal strength is the same but 3g/H data is working really fast, now I am wondering if my data on my o2 sim is poor as its cut down microsim. going to get a proper 02 microsim and test again
commodore65 said:
thanks for the info. I expect Samsung should repair anything as long as the iemi number is not reported as stolen.
tried the LF2 modem and its made no difference, however I have used an tmobile sim this morning, signal strength is the same but 3g/H data is working really fast, now I am wondering if my data on my o2 sim is poor as its cut down microsim. going to get a proper 02 microsim and test again
Click to expand...
Click to collapse
As long as the gold contacts on the bottom have not been damaged it will have no effect - plus it wouldn't effect data tbh as all the phone will do is read your networks information and they send/receive the data. But feel free to try; I personally have noticed that 3G/HSPA/+ is a lot slower on O2 compared to any other network tbh - but then again these data connections for O2 has only recently been added to my area, up until a few months ago the fastest we could get was Edge on O2, while the rest of the networks in my area has had 3G for at least 2 years lol.

T-Mobile HSDPA/EDGE

Hi guys I'm using an unlocked GT-I9300 on T-Mobile USA. This weekend I noticed the signal fluctuating from full bars to no bars where I usually get good coverage. Today I went to the about phone setting and noticed it was on HSDPA-9 when it gets bad signal and on EDGE when it gets the normal good signal. I'm curious what this means. I thought international sgs3 could only get edge on T-Mobile US? I'm not using data btw, connected to wifi, yet the signal still fluctuates.
My phone was branded T-Mobile Germany, but I flashed unbranded UK ICS.
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Signal Problems

Hi guys I recently got my at&t galaxy s2 unlocked and switched to T-Mobile but I still have the at&t version of the galaxy s2. The thing is, whenever I'm using data, the signal keeps dropping even when I am in a still position. For example, when I first start data, it will be at H+ (this is normal hspa+ network) within 5 minutes, it drops to 3g and then down to edge. And then sometimes the signal completely goes out so that data doesn't work. This basically happens every time I turn on data. Any ideas why this could be happening and how I can fix this?
Thanks
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