3711 - no signal

Yes, I know it is a lost cause, so I am asking this out of curiosity.
I dropped my Nokia 3711 off a pier into the ocean. I immediately wrote it off. Two days later a snorkeler was in the area and found it. I removed the battery and SIM card and put the phone in a bucket of fresh water and rinsed it. I then sprayed it with WD40 and let it dry in sun and then put it in a zip locked bag of rice. As I was out of the country at the time I didnt have the tools to disassemble it. Well, several weeks later I get home, disassemble it and plugged it into the wall charger. It lit up. Pressed the power button and everything came to life. The inside LCD was readable (and in color) but splotchy. External display only displayed about 1/4 screen. All keypad buttons work. Able to navigate the menu and access SIM card and stored text messages and photo's / videos.
Hoping to at least recover contacts, photo's / videos I connected it to the PC via USB cable. Nothing. I then tried to send the photos via MMS to another phone. When I noticed that didnt work, I tried to make a call and realized there was no signal. I was able to BT pair it with my laptop and navigate to the images directory and retrieve the images. I installed the Nokia suite software and was able to retrieve a backup in nbu? format.
So questions;
-Are the BT and phone antennas separate?
-How could I go about diagnosing no signal with limited tools (multimeter)? Is there a self diagnostic that could be run on the phone either from the keypad or via the Nokia software suite?
-Same question with regards to USB connection.
Pretty amazed that after two days in the salt water that it still mostly works!
Thanks!
-Giles

Welcome to the forum!
Thanks for recounting the story, it seems that you have probably achieved the best outcome that you could hope to expect having rescued your data form device; corrosion is strange and perhaps chips on motherboard the last item to succumb!
Happy to have helped forum with a Support Ratio = 42.5

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'm RJ , and has an official APPLE store here in BAR , I'm thinking of taking the set later this week and try to explain it , but it turns out I'm kind of suspicious of the status of this device , and I'm afraid they block my device permanently and I get to use it more .
Also saw that many people have locked their EMEI algum.E no reason other than to put the chip HI 5 iphones all works smoothly , some noble soul to try to help ? The only immediate solution is to try to put a CHIP HI to test the oscillation signal , and if not , would have to take the apple store.
Grateful, and I look forward answers .

Hello there, ckhapple.
The following Knowledge Base article offers up some great steps for troubleshooting cellular connection:
iPhone: Troubleshooting a cellular data connection
http://support.apple.com/kb/ts3780
Follow these steps for help troubleshooting cellular data issues on your iPhone. After performing each step, please test to see if the issue is resolved.
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Check for an iOS Software Update: Tap Settings > General > Software Update.
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Restore the iPhone as new.
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Find out if there are specific error messages in the carrier logs that could help determine why the issue is occurring.
If none of the above steps resolves the issue, contact your carrier, make an appointment at an Apple Retail Store, or contact AppleCare to troubleshoot further.
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