Database Users

[Q] Wifi range terrible, does replaced back effect it?

Hi All!
I bought a N4 off ebay that had its back replaced, here is what the listing said, "This phone has a replacement back glass WITHOUT wireless charging or NFC capabilities." which I dont really care about but my WIFI range and GPS is terrible.
I've tried multiple kernels and roms *including complete stock everything*
Its not my setup as my HTC one s, multiple laptops, wii, ipod, ect,ect all work perfect on my Asus Router rt-n66u.
Does anyone have anything I can try?
Also have a thread up for my gps : http://forum.xda-developers.com/showthread.php?t=2365187
Thanks for reading!

Since the replacement back does not support NFC or wireless charging, do you think it was suitable to support any other wireless feature that was designed for the Nexus 4? Does Bluetooth suffer the same reduced sensitivity? If the replacement back is not made of similar materials withsimilar characteristics as the original back it might be absorbing or reflecting signals, interferring with proper wireless recepton.

stevemw said:
Since the replacement back does not support NFC or wireless charging, do you think it was suitable to support any other wireless feature that was designed for the Nexus 4? Does Bluetooth suffer the same reduced sensitivity? If the replacement back is not made of similar materials withsimilar characteristics as the original back it might be absorbing or reflecting signals, interferring with proper wireless recepton.
Click to expand...
Click to collapse
Well thats my fear,
http://forum.xda-developers.com/showthread.php?t=2257896
Looking at this post it looks like whoever replaced this phones cover didn't transfer over the copper attenna's , that would be my guess and would explain my horrible wifi and GPS ... luckily my phone reception is good.
I'll have to open up my back now and take a look... now to have a T5 screwdriver at work..

Unfortunately cant find a t5 here at work , I'll have to wait till I get home.
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Looking at this image looks like I should only be missing the top right 2 antennas for Band 5 , GPS, WLAN, BT. I assume I have the other 2 antenna's as my phone reception is good .
Anyone know where I can buy just the antenna's?

Need advice for choosing replacement camera module in Runbo X5 phone

Hi all
I have a Runbo X5 rugged smartphone which I need to replace the back 8MP camera module, as I ended up breaking it while repairing the USB port on the phone (just a slight knock took the top of the camera module off and broke the focus wires and springs :crying.
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The back of the ribbon cable to the camera module reads WDSOL934105-V1 YW (I guess this probably doesn't matter). The back of the image sensor which I desoldered from the ribbon cable reads W F OV8825, which is a 8MP BSI-cmos sensor which works with a MIPI interface according to the product overview: www.ovt.com/products/sensor.php?id=179
The phone is based on the MTK6577 / MT6577 platform I believe. It also runs android 4.0.4 (and is rooted) if it makes any difference.
I am hoping that I can just buy any 8MP camera module from Aliexpress which has the same size and number of pins and solder it onto the ribbon cable and expect it to have the same pinout and work flawlessly? Or will I have to purchase an exact replacement with the same OV8825 sensor model number? The other thing that bugs me is the mention of a 256-byte embedded OTP memory in the image sensor for PN identification, would it be likely that the phone's firmware would check if that matches the original one and reject it if it doesn't? Also, while I'm at it would it be likely that a similar 13MP camera module might work as well? As the newest version of this phone comes with one (and the older version of the runbo X5 came with a 5mp camera so maybe it is changeable?)
Thanks for any advice
Josh

I'd personally stick with the same OV8825 sensor and just resolder it on the flat flex. Why?
-the drivers are (kinda) hard to replace, and are not like those for Windows, not very straight forward
-the pinout is likely to be different from the OV8825 to the OV13870
-the camera controller on the PCB is unlikely to be the same for the 8825 and for the 13870
-the size of the actual module may be bigger
Overall, if you feel adventurous or just plain want to experiment, you may go ahead and order the OV13870 from wherever you want and share the results with us.

Help identifying components on Nexus 6Pmain board

I'm wondering if anyone can identify the two components circled in red in the lower right corner of this image?
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I recently replaced the screen on my Nexus 6P, but these two component came loose (likely from when I took off the screen connector below them). One of them was lost as well.
After replacing the screen everything seems to work ok except that the Sim card is not detected. (The same sim works in other phones.) I'm suspecting that these two components are the issue. It's pretty likely that I would not be able to successfully replace them, but then again it might be worth trying.
Any thoughts? Thanks!

Your image link don't work..
But btw, why did you replace it? Broken?
I hear it's a very difficult and risky process to replace screens on 6P..
Sent from my Nexus 6P using Tapatalk

I just updated the image in the original post. I think it should show up now.
I dropped the phone from about two feet up and the touch screen quit working. Replacing the screen was a bit daunting, but actually seemed to go quite well until I figured out the sim was not recognized any more. It was a bit tough to pry off the camera shield on the back and to pry the insides from the body the first time. But now I can do it without too much trouble.
I think that the two parts I wan to identify might have been a bit damaged before (water damage?), and then I might have inadvertently helped them along.

balesse said:
I'm wondering if anyone can identify the two components circled in red in the lower right corner of this image?
I recently replaced the screen on my Nexus 6P, but these two component came loose (likely from when I took off the screen connector below them). One of them was lost as well.
After replacing the screen everything seems to work ok except that the Sim card is not detected. (The same sim works in other phones.) I'm suspecting that these two components are the issue. It's pretty likely that I would not be able to successfully replace them, but then again it might be worth trying.
Any thoughts? Thanks!
Click to expand...
Click to collapse
I can't see your image for some reason either on Tapatalk but I can in web view. Check ifixit for a full outlook of internal parts:
https://www.ifixit.com/Teardown/Nexus+6P+Teardown/51660
Edit: On second thought, the piece you're asking about wouldn't be discussed by them.
Sent from my Nexus 5X using Tapatalk

That's gonna be tough with no markings on the board or components. Google "identify smd components" might yield some helpful results. I think they are either smd resistors or fuses. As a last resort bridge the connections individually with solder or conductive glue. Check with multimeter after you bridge them to insure no resistance (good connection). Really looks more like those are components for the display circuit though.

normally those are some resistor smd.
you can check on other phones (service manuals) what kind of component is there.
i saw a service manual for lg g3 here on xda, you can check whatever you want but try to search for a component like that.

Canadian SM-G935W8 LTE Hardware Issue

Hello, I own the SM935W8 variant of the S7 Edge, bought directly from Samsung in Canada. Recently, I needed to do a capacitor/charge port replacement due to a torn ribbon cable. This is the module:
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After restarting, I lost all LTE reception. I saw the LTE statusbar icon flicker a couple times with very low bars, then it disappeared, never to be seen again. It's been a couple weeks. It was working fine immediately before. I'm almost certain it's a hardware issue incurred upon disassembly/reassembly. My phone has been opened more than ten times, owing to screen and camera issues. Lots of little parts to remove, maybe something wore. I already tried reseating all the hardware. I'm going to buy replacement coaxial antennae cables, because I'm thinking I may have bent a pin in one of them. This is the part:
However, I have a variant where the antenna doesn't go like that. Instead of 3 cables (right side, red/white/blueish), I have only two (left side, blue/white, partially obscured by bottom black piece). Note the lack of third, uppermost coaxial cable. Not a lot of documentation on these differences. The cables come for sale in either groups of 2 or 3.
In case replacing these cables doesn't work, what could the problem be? Does anyone know of any hardware part that, if broken, would cause loss of 4G signal specifically?
How about this part? Some websites simply call these pieces "motherboard cover", but other websites call it "antenna":
See here for website referring to these three pieces as "antennae". They do contain some pseudocircuitry that looks like it could contribute to cell reception. Since they're not super expensive, and I had problems making them fit back together 100% immediately before I lost the signal, I wonder if I should just replace them all too?
The only other thing of note is that I stripped one of the 15+ screw holes battening down the 3 black cover/"antenna" pieces that go over the hardware, hence I'm operating without one screw. The only feasible way this could contribute to the problem is if a certain amount of tension is required to keep some metal contacts together. It seems unlikely, but that's another reason to replace the black pieces.
I really don't think it's software related, although I haven't yet tried a factory reset or different ROM, kernel, or modem. I did try to see if it has anything to do with the APN settings, but sadly it didn't. I wonder what else it could be? Thanks for any guidance.

iPod Classic [USB C addon] [WIP]

.
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This is in the concept stage. There are no guarantees.
I am converting my Ipod classic to use a series of SD cards, and I picked up a spare iPod for cheap. This is going to be my work log for removing the stock 30 pin connector and replacing it with a USB C connector. I'll need to design and 3d print the bottom cover of the device except where the connector is. I'm not even sure if there's enough room on the board for this to happen, I might end up needing to cut into the iPod board and do tracing stuff to make room.

One thing I'm wondering is if I can attach the firewire of the iPod to the firewire of the USB c port. I think I'll try to make a 30pin connector to USB C to test and see if there's any advantage before I attach anything to the board itself.
http://pinouts.ru/PortableDevices/ipod_pinout.shtml
https://i.stack.imgur.com/Aovh5.png
https://www.mill-max.com/assets/pdfs/149.2.pdf
update 12/20/2018
I have a 3d printer now, and the dev boards have arrived.

Reserved2

Please update your work log!
I thought I was the only one wishing to upgrade my port along with my other mods to my ipod. I'm curious as to how you did it and what steps you took to make it happen! Following for future updates.

tkillen96 said:
I thought I was the only one wishing to upgrade my port along with my other mods to my ipod. I'm curious as to how you did it and what steps you took to make it happen! Following for future updates.
Click to expand...
Click to collapse
Unfortunately I'm stuck. I've tried translating the pins from one to another, but nothing I've tried works. It does not recognize it.
If someone knows what pins to what to make the conversion, all I care about is making sure it can still charge and sync. Not the other 30 pin features.

Any updates to this?

DR650SE said:
Any updates to this?
Click to expand...
Click to collapse
Am wondering the same, has anyone else attempted this? Wonder if there's a QI adapter anywhere. Would love to get rid of the crappy charging cable it requires.

Great project any news

lets reignite this project !
Save the BS and simplify it, just 4 pins, "D+", "D-", "5V+" and "GND", these are all we need to charge and transfer data.
What was the road block here? just unable to obtain USB connection ? Type C is a little tricky as it has a parallel design like lightning. Maybe you had got the pinout jumbled or connected one side in reverse? Ordering some test boards and Type C port components to see what i can achieve!
https://www.theiphonewiki.com/wiki/30-pin_Connector
Someone else commented about QI charging, it is entirely possible and would not be very difficult to do, the only problem is the iPod has a solid metal back so it would need a custom manufactured back replacement. I absolutely love the idea but i dont think anyone has the money/time/resources to design, manufacture the parts required. Because even if they did they would be sitting on it for a very long time with very limited sales(not to mention how many different variations.)