DO NOT trust "liquid or debris in USB port" and "OK to use" notification. - Google Pixel 4a Guides, News, & Discussion

DO NOT trust "liquid or debris in USB port" and "OK to use" notification.
My Pixel 4a fell into water and I took it out immediately. Except for a message "liquid or debris in USB port", the mobile phone was operating normally.
But, after I get a message "OK to use USB port, no longer detect liquid or debris", the phone is completely unusable.
I inserted paper into the USB port and took it out, and found that the paper became wet.
Obviously, Pixel 4a can not detect the presence or not of liquid accurately. Damage to the phone was caused by re-enabling the USB port while the liquid is still present.
If you get the same message, it's a better choice to shut down the phone as soon as possible and seek the help from repairers, rather than waiting for the re-enabling of the USB port.

OzzyThorne said:
Obviously, Pixel 4a can not detect the presence or not of liquid accurately. Damage to the phone was caused by re-enabling the USB port while the liquid is still present.
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Another way to look at it is "a non-waterproof phone can be damaged by water, and one of the forms this damage can take is an inability of the water-detection hardware to function correctly - and to therefore give false positives - allowing for further damage".
There's no evidence that a non-damaged - and/or non-wet - pixel 4a has any difficulty in detecting water.

Related

[Q] Replacing Micro USB Port for SCH-I535

I have a Verizon Samsung Galaxy S3 model SCH-I535 and I was having an issue with the charge port causing a desktop mode to pop up when plugged into my truck. This was effectively preventing the phone from charging because the screen would stay on. I read on a forum that perhaps the pin was bent down slightly closing a circuit that was only intended for certain after-market peripherals like a desktop dock. I noticed that it was in fact bent down, and I tried to gently bring it up, only to break the piece altogether. Now it won't charge or recognize any usb connections. I've begun externally charging batteries and swapping them in the morning and evening, but this is a real inconvenience, especially when I think it could just be replaced. I believe it's within my skills to solder the micro usb port, however I can't find a verifiable source for the part. I'm not under warranty, as I've already replaced the screen once. There's a part on this website called witrigs (unable to post url) that claims to be appropriate, but there isn't much information there. Can someone verify that this part would, in fact, work with my phone, or is there perhaps a better place to find parts?
From what I have read the gs3 needs a hot air gun to desolder the plug not exceptionally difficult but does require the right tools and there is several things close to the plug that you need to worry about.
I think I'm capable of the replacement, but is there anything specific to the micro usb for this device that would prevent a more generic part from being used?

corrosion inside usb port

When looking into the USB port I noticed there is a slight build up of green gunk which probably came from environmental moisture (not sure).
Possibly related to this is that when connecting PC to phone, some USB cables won't work (and sometimes power surge), some only works in one orientation, some only works via the wall charger.
Before I send my phone in for repair, just wondering if anyone here has had a similar problem, and what you did to fix it. Any help and comments will be appreciated.
Hi, i had this corrosion too, what i did (maybe not so sure way) its cleaning the corrosion that was between the pins of the connector, so first i turned off the phone and then i removed it with a needle, be careful with the pins. When you finish use a brush to clean the port a little more and remove the dust it may have, you can put alcohol on the brush.
If your cables are not working you can try to press a bit both horizontal sides of the connector to ensure the pins are always touching. Thats what i did when my usb c cable started to connect and disconnect the phone randomly when i just moved it a little.
ClementNg23 said:
When looking into the USB port I noticed there is a slight build up of green gunk which probably came from environmental moisture (not sure).
Possibly related to this is that when connecting PC to phone, some USB cables won't work (and sometimes power surge), some only works in one orientation, some only works via the wall charger.
Before I send my phone in for repair, just wondering if anyone here has had a similar problem, and what you did to fix it. Any help and comments will be appreciated.
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Click to collapse
Hey. Welcome to the club mate. I screwed up my charging port after a trip in Thailand. Some underwater diving & swimming caused the green junk in my port.
I had the same issue such as yours after the trip, Charging was fine but connection through usb on a computer was screwed up.
What I did was, cleaned the charging port with alcohol (Nail polish remover), let it dry & sent it to a nearby Sony Service centre.
They replaced my mother board for free (In warranty). The best part was I had my bootloader unlocked & they gave me a new motherboard with a locked bootloader
Sony service center employees don't know **** about Bootloaders in my country, I'm from India btw.

Strange metal brace (?) came out of the USB-C charging port

Hi guys!
I'm a fresh Pixel 2 user (and for now, I love the device), but a very strange thing occurred to me. I unboxed the phone, connected the cables to transfer the data from my old Nexus, and everything went smoothly, the cable connected easily and firmly. When I came home and wanted to connect the charger I noticed I can't push the USB-C cable in - it was getting stuck before being pushed completely, and the phone wouldn't charge. I looked closely into the charging port thinking that maybe some small debris was locked inside, but instead I've seen a crooked metal brace (closeup photo attached, the part was really small) that seemed loose and was blocking the connector to go fully inside. I didn't know what it was, but I used a toothpick to try to lock it in place or at least see if it's really loose, but upon touching it simply came out from the port and hit the floor.
The port now works flawlessly, it charges, it connects to the computer, nothing seems lose, the cable sits tight, and it looks perfectly normal to me. I checked some other USB-C devices I have if they have similar metal thing inside, but none does. The port now looks like all other USB-C ports I've seen.
I wouldn't expect anything to come out of the charging port in a new phone though. Would you have any idea what's the purpose of this metal brace in the Pixel's port, and what could've happened that it got detached from the port? Should I be worried or just throw it into the bin and forget?
I'd appreciate any clues and insights
Thanks!
M.
This looks like half of the metal usb shield inside your port. If you look deep inside there should be another half (or maybe it's fallen out). The purpose of this part is purely to reduce electrical noise at the point of the connector, so you shouldn't really see any charging issues with it out, although you may run into the occasional data transfer issue.
Thanks, that's reassuring I don't really see the second half, but everything is working smoothly so I will not be too bothered then.
Keep the part. The phone is faulty. If you don't have problems, wait until the warranty is nearly out and then RMA the phone to get a 'new' one
This exact thing just happened to my Pixel 2 phone. I hope I don't have any problems. I know this is an old post. Did it ever cause you any problems?
maticomp said:
Hi guys!
I'm a fresh Pixel 2 user (and for now, I love the device), but a very strange thing occurred to me. I unboxed the phone, connected the cables to transfer the data from my old Nexus, and everything went smoothly, the cable connected easily and firmly. When I came home and wanted to connect the charger I noticed I can't push the USB-C cable in - it was getting stuck before being pushed completely, and the phone wouldn't charge. I looked closely into the charging port thinking that maybe some small debris was locked inside, but instead I've seen a crooked metal brace (closeup photo attached, the part was really small) that seemed loose and was blocking the connector to go fully inside. I didn't know what it was, but I used a toothpick to try to lock it in place or at least see if it's really loose, but upon touching it simply came out from the port and hit the floor.
The port now works flawlessly, it charges, it connects to the computer, nothing seems lose, the cable sits tight, and it looks perfectly normal to me. I checked some other USB-C devices I have if they have similar metal thing inside, but none does. The port now looks like all other USB-C ports I've seen.
I wouldn't expect anything to come out of the charging port in a new phone though. Would you have any idea what's the purpose of this metal brace in the Pixel's port, and what could've happened that it got detached from the port? Should I be worried or just throw it into the bin and forget?
I'd appreciate any clues and insights
Thanks!
M.
Click to expand...
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luisenriquereyes said:
This exact thing just happened to my Pixel 2 phone. I hope I don't have any problems. I know this is an old post. Did it ever cause you any problems?
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Click to collapse
No, everything was fine with the phone afterwards - at least for that reason. I had to RMA it for failing display though after few months of use, so I no longer have that particular one. With the replacement the metal brace is still intact.

HTC U11 USB Port Warning message says to disconnect cable when nothing is plugged in... does this indicate bad USB port?

I have an HTC U11, yes I dropped it but no issues except for the primary mic stopped working. I had the mic issue fixed (the repair guy said the connection was loose, fixed it, and the mic works). But immediately since his fix, I'm randomly getting this Warning message: "The USB port of this device is experiencing a problem. Please disconnect the cable immediately to avoid possible damage. Do not use the USB port until you ensure that it is clear of obstructions and hasn't been exposed to liquids." This warning is displayed when nothing/no cable is connected to the USB port. Please see attached screenshot. It happens so sporadically, could be when I'm not using the phone or when I am using the phone and it's happening more frequently now. Sometimes I hear a beeping sound with the warning message. Does this mean I need a new USB port? FYI... Charging my phone works fine; no charging issues. Please help.
Update: The cell repair guy is ordering a new USB port to see if that resolves the issue. Fingers crossed!!
DSimba211 said:
I have an HTC U11, yes I dropped it but no issues except for the primary mic stopped working. I had the mic issue fixed (the repair guy said the connection was loose, fixed it, and the mic works). But immediately since his fix, I'm randomly getting this Warning message: "The USB port of this device is experiencing a problem. Please disconnect the cable immediately to avoid possible damage. Do not use the USB port until you ensure that it is clear of obstructions and hasn't been exposed to liquids." This warning is displayed when nothing/no cable is connected to the USB port. Please see attached screenshot. It happens so sporadically, could be when I'm not using the phone or when I am using the phone and it's happening more frequently now. Sometimes I hear a beeping sound with the warning message. Does this mean I need a new USB port? FYI... Charging my phone works fine; no charging issues. Please help.
Update: The cell repair guy is ordering a new USB port to see if that resolves the issue. Fingers crossed!!
Click to expand...
Click to collapse
Did the new USB port (or was it the charging port and circuit board) solve the problem? I've been having the same problem with an HTC U11 and now HTC U12 Plus phones.
james10s said:
Did the new USB port (or was it the charging port and circuit board) solve the problem? I've been having the same problem with an HTC U11 and now HTC U12 Plus phones.
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Click to collapse
You must have changed your battery to aftermarket, the aftermarket battery doesn't have temperature sensor, if you check with devcheck app, you will see the battery temp will always stay at 27/28 degrees regardless of how hot the phone becomes. So the system sees USB is hot while battery is cold and then panic that you may have a short at the USB. The only remedy is to get OEM battery, or transplant you original battery board/flex to your new battery. I did my transplant and no more annoying message that won't let you do anything until you reboot or allow me phone to cool down.

After reassembling my op6 it doesn't turn on anymore

Hi Guys,
You may have seen me complaining about the op6 here before, but now it has become a paperweight.
It all starts when no computer I use recognizes the OP6 (USB device not recognized) anymore, this happened after I asked for technical assistance to change my usb input from him that was having problems. But so far so good, because I'm not much of a copy data from my cell phone to my computer via USB.
Then came the problem, it presents the CrashDumpMode error that we have seen a lot here in this forum regarding this device. And then, as my computers don't recognize my cell phone anymore, I can't use MSMDownload to make the system recovery and the cell phone back to normal. This is about 2 weeks ago
I opened my cell phone yesterday, to remove the flat from the usb input, and try to clean, clean contact, etc... Soon after I reassembled the entire cell with all the flats as they were before and the cell didn't even give any sign of life.
What do you think might have happened? Did his motherboard take its last breath and die for good?
Hugs
You may have damaged the connector contacts.
blackhawk said:
You may have damaged the connector contacts.
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Click to collapse
Which connector? From the usb port or battery?
renatoknot said:
Which connector? From the usb port or battery?
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Click to collapse
Any you removed. They are easily damaged if misaligned. Best to use a very fine pair of tweezers and visual aid if needed. Pull and inspect for damage.
ESD protocols/procedures should be followed as well. The out of circuit subassemblies can be damaged by static electricity.

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