[Q] v4.03 losing phone network connexion - Galaxy S II Q&A, Help & Troubleshooting

I've got SGSII XEU Vodafone SIM but SIM free phone, updated via Kies, no mods at all (I'm a lurker, rather than a Do-er).
My phone worked a treat on 2.3.4 and I updated the official way. Since then I've had a problem with the phone losing the network periodically.
I've read up on SoD and did have a slight problem with wifi til I set it to 'never sleep' and that's been fine since, but the only way I can get the phone network connexion to revive, once down, is to restart the phone. (thank heavens they included a restart option on the power button *ahem*).
Is anyone else having this problem? I've searched here and couldn't find anything ICS related and I've sent a message to Samsung and heard nothing.
A googler friend mentioned that there was a radio issue which was to be sorted by v4.04 (not specific to my phone BTW), do I just need to be patient and wait for that release or is there something I can try in the meantime.
Apologies if this has been done to death, I found issues logged with gingerbread and rather more serious stuff (the aforementioned SoD), but not this.
and heres a link to the screenshot, note the unwelcome crossed thro circle at the top
https://www.dropbox.com/s/vtm2yi2om2f25gu/2012-04-21 22.04.38.png
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One backup data and factory reset .
Fails then take to service centre .
or join XDA developers forum and flash stock Samsung firmware or a different modem or both .
jje

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did u check imei no the pic u shows no signal/no sim symbol

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When it's working, it does have an IMEI, but it drops off several times a day.
I guess I will just have to backup/restore and see if that helps.
I went the 'official' Kies route as I think it's important for regular consumers to test a company's official systems and I will get on to them again about this - all feedback is good, right?
jje, pardon my ignorance (and thanks for replying so fast!) but aside from the official Samsung FW I've used so far, what should I try next?

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no do a factory reset first an if ur restoring titanium bck then stop,cause a bad bckup will carry on....

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waggermama said:
When it's working, it does have an IMEI, but it drops off several times a day.
I guess I will just have to backup/restore and see if that helps.
I went the 'official' Kies route as I think it's important for regular consumers to test a company's official systems and I will get on to them again about this - all feedback is good, right?
jje, pardon my ignorance (and thanks for replying so fast!) but aside from the official Samsung FW I've used so far, what should I try next?
Click to expand...
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Has your problem been fixed? I'm facing a similar issue. You did say "When it's working, it does have an IMEI, but it drops off several times a day." As in when you have the signal loss, it does not show an IMEI number? (or 0?) And when it comes back you have the IMEI again?

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I did a factory reset and it's gotten slightly better, I get signal drop offs but it usually comes straight back up again without a restart (probably my hand covering the aerial). As to the IMEI I haven't checked recently, will do next time I have to restart (which does still happen occasionally)