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About the antenna connector. It's strange but p8 lite don't have any of those things so there isn't any thing to replace, check this out if you want
https://youtu.be/goz4hDW1UeQ
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cmmx said:
Turns out (as I suspected!), those batteries are a fraud. Here's what's underneath - yep, just a regular 2200mAh battery with a fake sticker over it (pic from Aliexpress):
No wonder...: Buying Batteries in China (Caveat Emptor) - china_batteries.pdf
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Click to collapse
Thanks for Sharing this Information with us.? I wanted to buy this, but now I won't.
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cmmx said:
Don't know if they're for an antenna, but the phone definitely has two similar connectors; check the pic:
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These connectors are for production testing and not intended for customer use. They have a switching blade inside that disconnects the pcb antenna and route the line from the transceiver to the center contact. This switch is not made for multiple actions and can be broken easily. The result will be: No connection to existing antenna = less signal.
With no or an out-of-specs antenna the TX PA may be operated in unspecified SWR and power rating, soon blowing it, not to mention possible EIRP excess and so on.
Another problem is the RX LNA are usually not ESD proof. Touch of death. No signal.
So homemade wire antennas are not a good idea.
Related
From HackaDay.com: a nice way to probe those pesky BGA chips without stripping the entire board, so we can find JTAG or other connections without sacrificing a device.
Except for the box-knife I would use a (surgical)needle, and I would use a nylon fishing wire which has been roughed with a fine sandpaper (too be able to steer the enameled wire better).
Hope this gives us a better advantage to JTAG devices because we don't have to sacrifice one with this method.
Regards,
EqX
http://hackaday.com said:
Accessing BGA pins
posted Dec 17th 2009 2:00pm by Mike Szczys
filed under: classic hacks
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[Philip] developed a method of tracking down the pins of a Ball Grid Array. He wanted to do so in order to add USB host functionality to his HP Jordan 720. The method doesn’t directly connect to the BGA but instead finds a via or other access point to serve as a solder point. He first looks up the pin in the BGA datasheet. Once located, he uses the bristle of a toothbrush (teal) to act as a backstop and feeds in some enameled wire (brown) to the appropriate ball. A multimeter is used to check connectivity between the wire and the vias around the chip.
Patience young grasshopper, this should work but it might take a while.
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Does any one know if there are conductive chargers compatible with the Vibrant? I love the idea of having a power mat next to my bed to reduce some of that cable clutter.
Sent from my SGH-T959 using XDA App
I think you mean inductive, and I don't think so. That would need to be built into the phone somehow to support wireless charging. Perhaps a replacement back cover? The only known power input is the usb though, so it would be difficult to build.
ttabbal said:
I think you mean inductive, and I don't think so. That would need to be built into the phone somehow to support wireless charging. Perhaps a replacement back cover? The only known power input is the usb though, so it would be difficult to build.
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They have cases for it to adapt it to the iPhone. I don't see it being too hard to produce one for the vibrant. Maybe even a back cover adapter...
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The iPhone cases cup the bottom and plug in. Not sure I want to add more length or width to my phone, personally. A replacement back that patched directly to the battery would work, for me. Of course, the phone wouldn't know about the charging, that would be a little weird - wonder if it would mess with the battery calibration.
Shoot i thought it was conductive. Well that sucks, I think I might just look for a dock then. =(
So my Gnex went black over a year ago, I tried all the guidance at the time with combinations of plugging and battery pulls. It just plain would not respond in any way to any stimuli. I got a new Nexus 5 and lived happily ever after until the discussion of Lollipop on Gnex resparked interest.
So, I gutted the Gnex, everything looks good, but that little tiny button cell battery on underside of mainboard screams guilty.
BUT the little bastard is SPOT WELDED in its holder 6 places. 3 on top, 3 on bottom. Really? Yeah.
I manage to carefully sheer the welds with a tiny flathead. It reads ML414H.should be 3VDC, It tested out at 2VDC. Enought to keep phone from booting? Charging?
Anyway, I'm over here in Norway, and lets say getting on of these tiny batteries would apparently requires some creative logistics. (They dont even have Radio Shack )
I need help tracking down one to see if its a legit fix.
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This battery is simply a backup battery for the system clock. The problem is not with it.
Hello, i ordered a new battery (this).
But when i got it i noticed something, the battery is missing the "black plastic thing" that connects between the camera and the flashlight.
As you can see on the image in the link, there is connections on both sides. But not in reality when i got the battery. See the attached image for a better explanation.
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Do i just remove the plastic thing from the original battery to my new one or what? I cant find any battery on the internet with the plastic thing on it, except the one i bought. But in reality it was missing.
Then i have another question. I ordered a new adhesive tape but i have not got it from the company yet. Can i use some 3M doublesided waterproof tape instead that i cut by myself?
Thanks
Dude, the "black thing" is the NFC antenna. Just remove it from the old battery and stick it to the new one. Otherwise your NFC won`t work.
NFC Antenna
Hello.
when i try to take off the NFC antenna from the battery, accidentaly brake the antenna. i can find the z3 compact Antenna. Does anyone know if will work on a Z1 compact? Thanks
Opened an M8 to find this (circled and with the red arrow pointing at it) disconnected:
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Does anybody know what that connects?
TIA.
rhe12 said:
Opened an M8 to find this (circled and with the red arrow pointing at it) disconnected:
Does anybody know what that connects?
TIA.
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it connects to the bigger motherboard ( the one with the cpu and other stuff) connect the two wires so they dont cross each other
Thanks but that doesn't answer the question.
It's connecting the daughter board to the mother board.
It's hard to tell what it does exactly without proper documentation, you could unplug them, power on the phone and see what doesn't work.
If I had to take a guess then I'd say they might be connectors for the antenna or gps.
Thanks. I think you are right. I got a second M8 from Amazon and GPS hasn't working. When I opened it I found that disconnected at the MB end. Connecting it and powering the phone up resulted in a GPS that locks.
I thought it was for the SD card, mine stopped working after i had replaced the screen and didnt know why, when i disassembled it again to check this wire (or the one next to it) was popped off the connector.
I always thought GPS was the little tab on the very top that touches the frame once assembled (unless that is just to use the frame as an aerial)