[lorspuma]

Last week my partner upgraded to the new Lumia 800 and after a couple of days it seems to have developed a fault. When you receive an incoming call you slide up the screen and press the answer button, This answers the call and the caller can hear my partner but to him the line is just dead and the call is then disconnected after a couple of seconds. My partner uses his phone quite alot for work and this happens on 8 out of 10 calls

[JudaZ]

Is there a new SIM card in the phone ..or is it an older SIM card that someone cut down to a micro SIM size?  (to often the operators/carriers do this.. :/  )

[Wouthorr]

Is this a known problem with cut down sim cards? I have a similar problem and my temporary sim is indeed cut in size.

[lorspuma]

the SIM card was the new small one from orange as it was an upgrade

[dimot]

i had that problem. And i somehow if you lower your volume to 0 it also lowers the speaker when you talk. So just pump up the volume when you calling someone that worked for me.

[JudaZ]

Yes there is often issues   for instance the APN's needed to send MMS and connecting to Internet are some times not read correct.   And in worst case it can cause issues with the phone's stability

[RWRL]

I have exactly the same problem.

My SIM is not cut down - it was issued by Carphone Warehouse when I upgraded to the 800 a couple of weeks ago.

I did have to call Orange direct to activate the SIm as the data from CW did not appear to have been received but I have encountered no issues with connecting to the mobile network for calls or data.

To be honest, I doubt the SIM (or any hardware) is the problem as the issue is intermittent. It does not appear to be linked to the volume level I have set at the time the call comes in as I have had it when using varying settings. Also, simply tapping the "speaker" option and then tapping again to clear it, clears the problem and I can then hear the caller. I do not get calls dropping as a result of the fault - the call goes on and the caller can hear me, I simply cannot hear them at all unless I clear the issue as I've described above.

[Wouthorr]

Nice, thanks for the speaker button workaround. Also nice avatar picture, hmmm coffeeee.....

[lulu38]

I am on my second Nokia 800 in 5 weeks.  The first phone did this when receiving calls and when making calls.  Phones 4 U swapped the phone after much (heated) discussion.  Within 3 days my replacement 800 started doing exactly the same thing.  I has always liked Nokia phones, but I am beginning to wish I had never seen this one, let alone bought one. 

I appear like many others to have a phone that doesn't phone.  When is Nokia going to sort this audio issue out??  I will try the work-around suggested, but this phone is not 'fit for purpose' under the Sale of Goods Act and I will be hot footing back to Phones 4 U for another exchange, preferably for completely different phone very shortly............

[venky111]

True it happened to me. Initially i have sent it back to o2 and then they have done some repair and sent back within 1 day. now after 1 week has same calls problem