Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

hey tell more about this
how to fix it
nokia care center ws unable to fix it

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Can you please provide stept by step, how to resolved this?

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

DAMN IT! You're the man!! Flashing my N900 with Phoenix finally helped me out :) I can call and recieve SMS again :)

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

I am experiencing the same problem..!Its not about a new phone..i love the n900 and i want to fix it at any cost i gave it at a service center he kept it with him for 22 days and got back my phne without any result...Is there a proper fix for this or sould we try the trail and error method..?Someone with knowledge pls reply..Cant wait to see my device alive..!

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

I took a screwdriver and opened my N900.
Blew away some dust and loosened the motherboard.
Rinsed it under "eletrocleaner", and bent on it carefully as it was slightly curved :confused:
Now it's working fine. I have had this problem 3 times now. The two other times i had to send it to Nokia care. They fixed it for me but now its out of warranty so i hope this will work til i get my White N9 64GB :D

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Has anyone have any updates about possible solutions? The error appears even without a SIM card. The toliet papar fix doesn't work either. I really want to fix this so I can use my N900 as a phone. I'm desperate as I love this phone.

Edit: I'm willing to flash it but my USB port fell out.

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

This post has the solution - it worked for me 6 months.
I used thin strips of adhesive backed plastic on the chips, instead of springs.
(I would have reapplied the solution after that, but found second n900 to buy instead)

http://talk.maemo.org/showpost.php?p...1&postcount=18

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Well I opened the GSM module. Those spring, do they have to be those? I tried using some similiar and the result was the same. Still getting the same telephony error.

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

They don't have to be the same....I used some plastic/rubber stuff (I had a sheet of little plastic stick-on "feet", I used the thinner stuff between them.
You need something thick enough that the metal cover is hard to get back on the chips, and it's bulging... so it's putting good pressure on the chips. (but if it's too thick the keyboard won't stay in place)

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Well I tried it, the metal cover is bulging and it was diffucult to put back on but no success, still getting the telephony error.

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Hi! I had the same problem with n900. It sometimes show the telephony error, so I was restarting the phone, and error goes away. After some days it came back, and phone restart didn't helps, so i think like most people and I put some plain paper under battery on sim card, this solution works for a few hours. I consider that this is end of my phone functionality, but I look up the talk.maemo.org for any other solution and I found that fault is based on moving sim card in sim slot, so I opened my n900 put more paper under battery and sim shows up, I made some quick moves (forward backward) and sim card was not found for a while, so it's true for my phone.

What I have done to make it works:
- put plain paper under six copper flat piece of metal
- scratch with screwdriver copper place of sim card (six points)
- insert sim card with flat plain paper to sim pocket
- insert plain paper under battery

This makes sim card very stable and vibration resistant. I also want to put plastic under these six copper flat pieces but sim pocket wont close, you have to be carefull, it's very gently. I also do this http://talk.maemo.org/showpost.php?p...1&postcount=18 but with plain paper, but I think it didn't fix that.

For now it works perfect like never before, if someone wants I will do photos how it looks. Maybe this solution will help someone.

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

i think there is a small battery on mother board replace it then see what happens

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

I am having same annoying problem and from the mail threads i see that only following works :
1. Phone replacement
2. Some tricky fixes like applying pressure near SIM or pressing Battery really hard, juggle with PINS ( i suspect i would do more harm this way to my phone), insert paper piece etc., etc.,

I believe this problem exists for devices manufactured/released during certain time frame( may be year 2010 models).

I tried complete reflash and all tricks in point 2 mentioned above and to my dismay nothing works!!

Would be good if if you could attach pics of how you would manage to get it working back perfectly after having experienced annoying problem!!

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Give me an e-mail address and i will send you a picture showing what i did on my N900's GSM module almost a month ago and made it works like a charm. :)

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Hi! could you please send me too? glauco34ATyahooDOTcom

Thank you very much!

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Can you also send then to me as well please. Thanks

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

saponga,

Wouldn't it be easy for you to post the pictures here or at least post links to them instead of asking for email ids? This thread will get filled with email requests unnecessarily otherwise.

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Sorry my lazyness :o
Here you go !
https://www.dropbox.com/s/3krcyp7vz2...55843.jpg?dl=1

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Hi,
If I understand you've glued pieces of a spring on the chip, right?
What kind of spring did you use? like the one in ballend pen?
What glue did you use?

Thank you!

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Yes, i used pen's spring and the glue is that one... :) Some kind of "liquid epoxi polimercaptanas" :eek:

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Thanks again!
I'll give a try :)

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Hi saponga. Thanks for posting the picture. I did exactly what your picture shows, but unfortunately, it hasn't worked for me. I just have a couple of quick questions if you don't mind. After attaching the spring pieces to the modules, did you then replace the shielding as well? Are the springs there to make a connection to the shielding or is this purely to apply pressure to the GSM modules? Forgive me, I am just trying to understand what I am aiming to do to try and get my N900 working again. This is my third N900 with exactly the same problem. Two were replaced under warranty but now I am on my own, so anymore information or ideas you have would be most welcome (or anyone for that matter) Thanks for your time.

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

yes, you need to replace the shield properly. Actually, the shield will be a
bit deformed since the spring should put some pressure on it. The rationale of this aproach is put some mechanical pressure on the GSM modulles. Sorry hear that it don't work for you. It took almost 2 months since i got mine fixed and still working like my father in low's first phone.

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Yeah, the shield actually clipped back on nicely and as you say, there is a bit of a bump where the springs are touching it. Oh well. Back to the drawing board. Thanks for your help and replies. Glad you got yours working. Cheers.

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

I tried the several methods of applying pressure to the sim and checked the screws on the back, but nothing works. If this is not fixed soon, I may have to get a new phone.

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

I used another sim card between the battery and sim holder, and after a few hours, seems to be working fine.

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Has anybody tried to reflow the solder on the motherboard?
In thoery could be done in a domestic oven like some people have done laptop motherboards and graphics cards.

http://www.computerrepairtips.net/ho...p-motherboard/

Obviously a last resort, but maybe worth a try for the brave.
The main issue is protecting/removing the plastic parts which would melt.

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

hi iam fiji and there are no companies who can help to resolve this problem.... just want to know if this problem is repairable and if it is software issue or hardware issue...... have tried many things but nothing helps.......

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

I was still having an issue with mine, and checked out the sim holder. The card was loose, which explains why adding another card under the battery helped, but the battery case is not meant for that pressure. I bent the metal holder down towards the motherboard to put pressure on the sim. So far, it is holding up to being knocked around. This is a super simple fix, so give it a try.

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Mine has no telephony functions anymore. All the tricks have failed. Time to buy another; at least there are new ones available via ebay for around $150. I am going to pick one up and use it til Jolla comes out with theirs. There is just nothing out there that I want to spend $500+ on right now.

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Used some papers to apply pressure, and worked for me. atleast for now.

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

I usually get this when the phone has had power issues. I suspect the communication with the radio firmware gets out of sync and it takes awhile to sort itself out. Taking out the SIM and replacing it almost always fixes it for me. For those times when it hasn't a second try always does. I don't think it's a physical thing that increased pressure helps, I suspect it's just that you're taking out the SIM, and even whilst the phone is off, the radio controller is still running as long as there is reserve power in a capacitor or some such somewhere.

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Yesterday I got the same error as everyone in this thread:
"All telephony functions, including emergency calls, are disabled due to a communication error. To recover, you might have to reboot the device".

A red line crossed sign of sim card indication is shown on the status bar.

no call and internet,Wifi are not working what shal i do,
Help me please.

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

You can try Dr.Marcial's method : http://talk.maemo.org/showpost.php?p...5&postcount=43
But it will only be temporary...

Strange that your wifi doesn't work either, mine is ok...

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

http://www.jabawok.net/?p=14

Fixed it!
thanks!

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

only for a while I'm afraid...

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

I've heated the gsm chip , so far no problem ,3 weeks and counting

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Lol this could be the same thing like with broken computer graphic cards: You can bake your graphic cards to get them working again, because some capillarry cracks in the solder joints will be filled up by reheating the board with ~120-250 °C.

But it is difficult to remove all plastic parts from N900's mainboard so it is maybe possible to do it locally with a hot air gun! :)

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

Yes, I had that problem too and you guys scared me to death, that the comm chip might be dead. I opened up the back cover, got the SIM out, and with the tip of my screwdriver i scratched out some lines exactly where the pins on the SIM reader should be. Scratched out a little (be gentle, very gentle, treat it like you would treat your girl) the pins on the SIM reader and voila, it works perfect.

After this fix, I even applied some pressure in key points, even shaked the phone like crazy, no more signal loss. Everything is ok. Also, my SIM is a little more slim than other sims, idk why, but it just is so on a shock like a fall on the bed it would loose signal for ~1 second, but I got rid of that error.

Here is a pic with the scratches on the SIM:

Attachment 31835

:p

Re: all telephony functions ... are disabled due to a communication error - anyone else experiencing this?
 

I can assure you the problem is far more complicated. I changed my SIM card twice and no change, now I even get the error message without sim card... it's only temporary (just read the others posts), enjoy using your telephony functions until the last day!