I can't phone with my S3 - Galaxy S III Q&A, Help & Troubleshooting

Since 2 days i can't phone with my S3.
When i call someone, my s3 sounds nothing and i can't hear someone and someone can't hear me. If someone is calling me, there is the same problem.

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Please provide more details of you firmware so others may try of understand the nature and cause of your problem. Knowing the cause will most like lead to the solution
ie. Any changes made since the problem
1. Rooted?
2. Firmware version including baseband
3. Custom or stock?
4. Any mods, flashing, setting changes since working?
5. Apps installed since?
6. Have you Factory reset?
7. Any other info that would be useful sincethe problem started..........

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1. Rooted?
2. Firmware version including baseband
3. Custom or stock?
4. Any mods, flashing, setting changes since working?
5. Apps installed since?
6. Have you Factory reset?
7. Any other info that would be useful sincethe problem started..........
1. NO ROOTING
2. FLASHED TO ORIGINAL Firmware with no Apps or Games. I installed nothing and with Factory Reset.
AP: I9300XXALE8
CP: I9300XXLE8
DBT: I9300DBTALE5
Before the problem started it was rooted.
but i can do and try what i want.
my simcard works with other phones.
my galaxy s1 has no problem.
only my s3 has a problem with calling.
i can't hear someone and someone can't hear me.
when i will call someone there is no dial-tone.

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1. Try switching and test between GSM and WCDMA
2. Flash back to your origninal firmware or try another firmware or modem
[Guide+ROMS]Odin Flash+Root Guide & Stock Firmwares LE4/6/8/9/F/D, LF1/2
++ Do you still have original IMEI number?

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Try switching and test between GSM and WCDMA
I have tried it, but there is no reaction.
yes i have original imei.

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If you have exhausted all the previous suggestions, can't imagine it being any fault of the firmware. More likely hardware.
I'd erase all evidence of rooting and make sure sure you flash counter in Download mode is Zero and Settings > Status > Device Status does not read modified >> return for warranty repair or replacement
Sorry, can't think of anything else yet

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yes i think its a hardware error.
all other functions internet, etc are working correctly.

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I'm having the same problem.

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i also had a problem with calling. i think antenna is faulty since the phone loses signal. just replace it.

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I also have the same problem. I want to find a new modem firmware. but cant find it anywhere.

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Totòòò said:
i also had a problem with calling. i think antenna is faulty since the phone loses signal. just replace it.
Click to expand...
Click to collapse
but where can i get a antenna for the s3? did you replaced it?
had you the same problems?
if the antenna ist faulty how i can get into the internet with my s3? becaue the internet and the data transfer has no problems.
its only calling.

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Totòòò said:
i also had a problem with calling. i think antenna is faulty since the phone loses signal. just replace it.
Click to expand...
Click to collapse
Why bother with repairing anything when that will void warranty. Exchange for new if possible, or official Samsung service centre.
Sent from my GT-I9300T using xda premium

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but the question is what is the error?
i think if the antenna is faulty i can't get a connection to the data transfer and the internet. but this is working.
i have only a call problem.
can it be that a modem file is corrupt?

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Devil1978 said:
but the question is what is the error?
i think if the antenna is faulty i can't get a connection to the data transfer and the internet. but this is working.
i have only a call problem.
can it be that a modem file is corrupt?
Click to expand...
Click to collapse
You said you tried different modems. And as you wiped and flashed back to full stock firmware (I assume original?), and the problem remains >> hardware fault
Sent from my GT-I9300T using xda premium

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Yes i have a another modem file.
but where can i download more different modem files or a 3-part firmware to flash?
i need a german modem or firmware file.

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Devil1978 said:
Yes i have a another modem file.
but where can i download more different modem files or a 3-part firmware to flash?
i need a german modem or firmware file.
Click to expand...
Click to collapse
Search the forums....
Edit: ok, I'll do the searching...
http://forum.xda-developers.com/showpost.php?p=26530897&postcount=11
Follow the guide in Intratech thread
Sent from my GT-I9300T using xda premium

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Thank you very much.
Now i will flash a modem file and if this will not work, i try to flash a 3-part firmware. And if this doesn't work i will send the s3 back to the samsung service center.

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Devil1978 said:
Thank you very much.
Now i will flash a modem file and if this will not work, i try to flash a 3-part firmware. And if this doesn't work i will send the s3 back to the samsung service center.
Click to expand...
Click to collapse
Let is know how you go. Follow Intratech guide exactly and you can't go wrong.
Sent from my GT-I9300T using xda premium

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i had the same. you can try to reset your phone via settings

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I doubt that this a hardware error.
Reason 1: speaker and microphone are working.
Reason 2: mobile data sending and receiving is working.
(if this is an error with the antenna i think i can't receive and send mobile data)
Reason 3: i have always a good signal.
i have only a problem with calling. and this with 3 other tested simcards.
after the ending of a call it comes for 2-5 seconds the message that i have currently no signal.