My phone randomly shuts off.. - G2 and Desire Z General

I've noticed that when ever I squeeze my phone, where the battery cover is, it shuts off. Has anyone else experienced this or am I just the only one?
Sent from my HTC Vision

Don't squeeze the phone? If you look inside your battery compartment, there are tiny gaps between the battery and the phone. I can only assume that these gaps are for the battery to expand when heated up during use. I think you're in the situation where you hold your phone in a certain way, you are actually temporarily disconnecting your battery from the terminals which is shutting down your phone. A ghetto solution is to pad the inside of your compartment with paper =p

Also check to see if your battery is swollen. If it is then it may not be sitting very well in the housing causing it to move and disconnect from the contacts when you flex the housing of the phone.

Bharakrama said:
Also check to see if your battery is swollen. If it is then it may not be sitting very well in the housing causing it to move and disconnect from the contacts when you flex the housing of the phone.
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Click to collapse
Also, clean the contacts with a little rubbing alcohol on a q-tip

Related

Electrical (what seems to be) contacts on battery cover. Why?

I just noticed that there is a pair of contacts on the inside of battery cover and matching spring loaded contacts in the housing, next to the lower left and right corners of the battery. Anybody knows what are they for?
If they are really electrical, is it possible to detect from software if the bettery cover is removed? Not that this could be used for anything useful, but just curious if that's possible.
vponomarev said:
I just noticed that there is a pair of contacts on the inside of battery cover and matching spring loaded contacts in the housing, next to the lower left and right corners of the battery. Anybody knows what are they for?
If they are really electrical, is it possible to detect from software if the bettery cover is removed? Not that this could be used for anything useful, but just curious if that's possible.
Click to expand...
Click to collapse
I'm just guessing but I know that the first version of the car kit involved replacing the back cover....so...I'm guessing it relates to having the car kit plugged in and just putting the phone in the kit without needing to attach a cable in the phone each time.
Did I mention that I'm just guessing.
n11 - Good guess.
Thanks for the tip. So, from what I understand, these contacts are for power supply, correct?
vponomarev said:
Thanks for the tip. So, from what I understand, these contacts are for power supply, correct?
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Well...since Mega Maniac has given such strong support to my guessing ability I'll answer this way: Yep, I guess the contacts are for the power supply.
The contacts are probably for proper grounding since the battery cover is metal. It would be bad to have a static charge differential build up on the cover take out the circuit board. Or it may be that the cove is the antenna. But I doubt that. Just my opinion.
I was thinking within the same line, but more like bettery cover being a shield to prevent any external radio interference. But power connector theory sounds more reasonable. I'm NOT going to verify this theory by applying 5V to these contacts.
vponomarev said:
I was thinking within the same line, but more like bettery cover being a shield to prevent any external radio interference. But power connector theory sounds more reasonable. I'm NOT going to verify this theory by applying 5V to these contacts.
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I'm now guessing that you are a very smart person...grin.
Just for the record I dont have the HTC navigation car mount, but if you are talking about the teo connections either side of the back cover then I cant see what else it would be. Essentially my opinion is as much of a guess as n11, but I would bet my HD2 on it, because there is just about nothing else it could be.
I'd like to know for certain what these are for as well.
Grounding
These connectors are probably grounding, if you see on the cover the paint is striped away where the connectors meets the cover.
If this was in anyway connected to the battery for charging it would short out the battery since the cover is made of metal.
Just Checked With my multimeter and there is a direct connection between the two points, and also between the screws and the two points, so grounding it is.

[Q] invalid battery solution

First and foremost sorry for all the etc... (this assume you've experienced what happened to me)
So you have a DroidX and somehow invalid battery shows up etc....
Mine happened after the "myguyver hack" sbfing failed etc...
Now every charger every battery is not detected by the DX etc...
You and your phone is in a totally screwup up situation lol on top of that no warranty or anything that can get you a new phone
Well since your phone is already screwed anyways lets do some more damage lol
Lets disect this baby start by the 2 torx screws inside the battery case
Afterwards using your finger nails or a plastic screwdriver pry open the plastic pieces one on top of the Motorola logo and the one under the hard buttons becareful and take your time
Remove the 4 exposed torx screws and pry open the case apart.
The purpose of this is to connect the 5vdc from the USB source to the battery spring terminal so yeah solder the far left inside of the microusb female to the far left side of the battery terminal
Now for the 5volts its the far right side of the microusb to the far right battery spring terminal assemble and enjoy
It still says it doesn't charge but its tied to the battery so it'll charge it without using the phones "logic" to do so
Now here's the tricky part if you're gonna use USB to transfer files you have to take the battery out.
Im having the same issue, but with a Milestone 2 - A953. I would thank a lot any fix. Thanks.

[Q] Battery Mainboard Solder

So there's lots of questions about bad battery life but haven't found my issue in searches - altho I suspect my issue is a factor for many to some degree.
N4 took a 4' to drop to concrete. Screen cracked. Replaced screen w/no problems. Ran fine for a while on stock 4.4.4. Lollipop comes OTA practically zero day and since the N4 isn't my primary phone I upgrade to play around. Shortly after 5.0, the battery drains and shuts the phone off. I charge it overnight, pull it off, battery is dead, phone shuts down. Will stay on and operate fine on wireless charger but powers down if not connected. Pop off the back again to make sure battery connector is snug and reassemble. Now I've got red light of death. Get Google logo and can boot to recovery options but it just cycles. Disassemble again and ultimately find that the battery pins from the mainboard and their little black housing have come off at some point. Try to solder it back on but there's chips on the back side and there's just no room to get the solder on and pins reconnected. Not w/my skills anyway.
My main question is, has anyone successfully reconnected that annoying mofo? Thinking about skipping the connectors and just soldering wire straight from the battery to the board. I don't see anything in that connector that would be a problem if absent, but any warnings I should know about? Other workarounds?
This is not mission critical, just principle/spite.
Repaired?
gkmocv said:
So there's lots of questions about bad battery life but haven't found my issue in searches - altho I suspect my issue is a factor for many to some degree.
N4 took a 4' to drop to concrete. Screen cracked. Replaced screen w/no problems. Ran fine for a while on stock 4.4.4. Lollipop comes OTA practically zero day and since the N4 isn't my primary phone I upgrade to play around. Shortly after 5.0, the battery drains and shuts the phone off. I charge it overnight, pull it off, battery is dead, phone shuts down. Will stay on and operate fine on wireless charger but powers down if not connected. Pop off the back again to make sure battery connector is snug and reassemble. Now I've got red light of death. Get Google logo and can boot to recovery options but it just cycles. Disassemble again and ultimately find that the battery pins from the mainboard and their little black housing have come off at some point. Try to solder it back on but there's chips on the back side and there's just no room to get the solder on and pins reconnected. Not w/my skills anyway.
My main question is, has anyone successfully reconnected that annoying mofo? Thinking about skipping the connectors and just soldering wire straight from the battery to the board. I don't see anything in that connector that would be a problem if absent, but any warnings I should know about? Other workarounds?
This is not mission critical, just principle/spite.
Click to expand...
Click to collapse
So were you ever able to get the connector solder back on? I think mine break because it was to hot when I was removing the battery. My nexus 4 shutdown on me, my battery was expanded. I was wondering why my screen was being pushed out. I wonder if Android 5.0.1 is causing phone to run to hot. Never did this with Android 4.4.4. Hope the connector can be fixed. Maybe I take it to a solder shop.
jameswhite4684 said:
So were you ever able to get the connector solder back on? I think mine break because it was to hot when I was removing the battery. My nexus 4 shutdown on me, my battery was expanded. I was wondering why my screen was being pushed out. I wonder if Android 5.0.1 is causing phone to run to hot. Never did this with Android 4.4.4. Hope the connector can be fixed. Maybe I take it to a solder shop.
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Click to collapse
Not yet. I pulled the connector back off and cleaned everything up. I found that even very small gauge solder is too sloppy for the 4 small connections. Not to mention there's chips on the back side so you can't linger too long with heat. So my plan is to try again with some conductive ink and/or gel. If that doesn't work I'm just going to use wires to bridge the battery right to the board. Haven't had time to work on it but I'll follow up here when I do.
Did you get a replacement battery? Lithium batteries can swell because of overcharging. There are definitely more than a few N4 owners who had the same issue. A replacement battery won't solve that problem but it could be more tolerant of it, for a while - and depending on if it was "user error" or a fault in the phone's overcharging protection circuitry. Don't go to the trouble of having someone solder the connector back on with the old battery.

Thinks it's charging, but it isn't

My S5 thinks its chargning, and the stops charging and charges again and so on all the time even though the charging cable isn't plugged in.
I've changed the micro-USB port inside the phone, which didn't fix it. It won't charge through the micro-USB port, it doesn't get recognized as a storage "thing" on the computer either, which it did before. Also, it works charging it wirelessly though. I've also factory resetted it and wiped the cache in the bootloader menu, without that fixing it either. I did get some water on the phone, which came inside the back cover the day before this problem occoured, which probably is the cause of it.
Any suggestions to fixing it? If not I'll buy a new phone.
Thanks in advance
Thoumieux said:
My S5 thinks its chargning, and the stops charging and charges again and so on all the time even though the charging cable isn't plugged in.
I've changed the micro-USB port inside the phone, which didn't fix it. It won't charge through the micro-USB port, it doesn't get recognized as a storage "thing" on the computer either, which it did before. Also, it works charging it wirelessly though. I've also factory resetted it and wiped the cache in the bootloader menu, without that fixing it either. I did get some water on the phone, which came inside the back cover the day before this problem occoured, which probably is the cause of it.
Any suggestions to fixing it? If not I'll buy a new phone.
Thanks in advance
Click to expand...
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Should have left it to dry out before using it or putting the battery back in
Try washing it with Isopropyl alcohol and leaving it to dry fully
*Detection* said:
Should have left it to dry out before using it or putting the battery back in
Try washing it with Isopropyl alcohol and leaving it to dry fully
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Click to collapse
I did dry in rice, do you mean washing/dunking the entire phone without the LCD and battery?
Thoumieux said:
I did dry in rice, do you mean washing/dunking the entire phone without the LCD and battery?
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Clean the board of the phone with the alcohol yea, the alcohol will remove any residue left over from the water that could be causing the problem, and will evaporate off leaving no impurities behind
It's the impurities in the water left behind on the board that cause the problems

Circuit diagram of main board

Does anyone have a circuit diagram of an Umi Super main board? I am especially interested to know just what purpose the three flexible connections in the uper right corner on the board serve. They obviously make contact with opposite side of the phone case when it's assembled. There are also three at the top left corner of the board as well. After droping the phone, the two connectors at the very top on both sides broke off. The result was that the battery was quickly drained and no longer could be charged.
I managed mount them back on so that they also had functioning contacts by carefully super glueing them in place. After reasembling the phone it worked again but only for two days, then again I couldn't charge the phone. It turned out, that the connector on the right top corner had broken off again.
So just what is it for, anyway, because as far as I can tell, really only the second connector has a connection to metal on the cover when assembled?
So now I very, very carefully sodered it together and I knew I could destroy the rest of the electronics, but had nothing to loose... Then I tested the connection with a ohm meter and it was as it should be. Again I reassembled the phone, but still can't charge its battery. Maybe I really did kill something else in the process.
Still I am interested in a circuit diagram to understand what might be the problem. Can anyone help out?

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