Can small magnets damage this phone? - Xperia Z1 Q&A, Help & Troubleshooting

Hi,
today I had 3 whiteboard magnets (the part of them that seems to be the magnet is maybe 3-4mm in diameter but may be more on the inside, they are spherical) in my backpack with my phone. They were both inside some of my winter gloves / hat for bump protection and sat at least a few cm away from each other. There was no direct contact. Acting upon each other, the magnets seem to cling pretty strongly.
The phone seems to function normally, but I have some OCD about my electronics and I was wondering if I've goofed or it's alright.
Looking forward to some good news.
Thanks!

Normally it shouldn't bother except those magnets are super, Super superpower full
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Related

Galaxy Note II Case with Stand Photo Review

Hi initial photo review of this case. Will write a full review later tonight.
In a nutshell it is well made and light. Fits very well in trouser pocket. Does not feel bulky.
Price about £10.
You will find them on ebay in various colours.
If these photos help you decide. Feel free to hit the old Thanks button.
Glad to be of service.
That case looks great. I love how it protects the edged of the phone, unlike the official Samsung flip case. Does the flap stay closed using magnets?
zpiders said:
That case looks great. I love how it protects the edged of the phone, unlike the official Samsung flip case. Does the flap stay closed using magnets?
Click to expand...
Click to collapse
Yes it does. I will write a detailed review sometime today. Central heating pump failed and looking after a newborn has kept us busy. Lol
Sent from my GT-N7100 using xda app-developers app
Thanks for the pics. A link or two to the ebay sellers would be nice, though...
Edit: Is this the same seller?
Also, does the magnet cause any issues with the s-pen?
Tried one out and found that I had to take the back cover off to fit the phone snugly.
Since the cover doesn't have an NFC chip, you will lose that functionality. The case doesn't fit on the phone with the back cover on unless the one I saw was a duplicate. Moreover the magnetic closure is flimsy too.
Just my 2 cents.
Sent from my GT-N7100 using Tapatalk 2
fawaad said:
Tried one out and found that I had to take the back cover off to fit the phone snugly.
Since the cover doesn't have an NFC chip, you will lose that functionality. The case doesn't fit on the phone with the back cover on unless the one I saw was a duplicate. Moreover the magnetic closure is flimsy too.
Just my 2 cents.
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
The case has nothing to do with NFC... what do you mean?
mdt73 said:
The case has nothing to do with NFC... what do you mean?
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Click to collapse
The NFC antenna is embedded in the Note 2's back cover.
For the record. The handset clicked into case. Nothing had to be removed. Grips it fine. Must be a different case if you have to remove covers.
So far only really annoying thing is using it one handed. The folding cover is in the way of fingers.
There is a similar case that has a rotating cover. That would resolve this issue. Also enables a portrait stand.
Also as suspected. The home button is being pressed by the cover due to no recess (think thats the correct word) in the cover. This is activating the voice assistant. Disabled it as it is rubbish. But will mod cover at later date.
Sent from my GT-N7100 using xda app-developers app
Another little update, these stand cases are really good for watching iplayer etc. But I think I am going to buy a leather sleeve/pouch type case. Ive always used them with htc handsets, due to most usage is one handed. And save the stand case for movie time.
Sent from my GT-N7100 using xda app-developers app
I bought the Original Samsung Note 2 flip case instead. Although it was expensive £30 .... but I think it looks really nice and still have NFC function.
zero.fx said:
I bought the Original Samsung Note 2 flip case instead. Although it was expensive £30 .... but I think it looks really nice and still have NFC function.
Click to expand...
Click to collapse
The biggest flaw with the original Note 2 flip case is that the corners/edges are completely unprotected. If you drop the Note 2 and it lands on the corner it might shatter the whole screen.
Not enough protection for my taste...
I bought this case yesterday in a shop and was massively disappointed. If you fold the cover behind the phone to use it the phone is hard to handle and doesn't sit ergonomically in your hand.
BUT BIGGEST FLAW: The little magnet on the right side interferes with the wacom digitizer. Try pulling out the S Pen and draw a straight line along the right edge, and the line curves outward around the magnet.
I was about to return the phone when I realized the error was next to the magnet. Pulled it out of the case and problem gone. I could reproduce this problem anywhere on the screen by holding the magnet part next to it.
There are tons of reports if you google "wacom magnet s pen" about interference, so I would avoid using this case. There is apparently even a note about this in the manual somewhere.
sz1a said:
I bought this case yesterday in a shop and was massively disappointed. If you fold the cover behind the phone to use it the phone is hard to handle and doesn't sit ergonomically in your hand.
BUT BIGGEST FLAW: The little magnet on the right side interferes with the wacom digitizer. Try pulling out the S Pen and draw a straight line along the right edge, and the line curves outward around the magnet.
I was about to return the phone when I realized the error was next to the magnet. Pulled it out of the case and problem gone. I could reproduce this problem anywhere on the screen by holding the magnet part next to it.
There are tons of reports if you google "wacom magnet s pen" about interference, so I would avoid using this case. There is apparently even a note about this in the manual somewhere.
Click to expand...
Click to collapse
This happens because wacom digitizers use magnets to work (partially, there's more to it) - the pen is a magnet. Crash course: A magnet creates a magnetic field around it. Whenever you're moving the pen, you're moving this field - any given point in space near the magnet experiences a change in this magnetic field (this creates an electric potential and a potential difference between points affected by the field). A really cool thing about moving magnets near wires is we create what's called an induced EMF - the change in magnetic fields causes electrons to move because of changes in relative potential difference between nearby points.
A static magnet (in relation to a point) will have a static field, but a field none the less - the magnet on the casing. When you bring two magnetic fields together, they interact to form a resultant field at any point in time.
The pen is still working as intended, but the other magnet has changed the potential you produce near that magnet via movements of the pen - thus, different and incorrect readings. It's relative to the position of the case magnet, so you get a different effect at different distances from the magnetic source.
The result is that the same motions of the pen near that magnet are causing different currents to be read than the wacom digitizer expects for that motion.
While it's great to hear through some empirical data that physics still works, I was already actively avoiding this case for this reason.
In contrast, previous smartphone cases with phones that use capacitive touch don't have as much an issue because it's basically a field of current that your touch (finger, capacitive stylus, etc) redirects some of that flow across. While a magnet could indeed affect this field, the magnet isn't moving so it's not as much an issue (it's still an issue because, depending on field strength, orientation, and relative locations, the electrons are still moving with respect to the magnet, and are repelled/attracted by the field in this manner to different degrees. However, the difference is constant and like is accounted for because digitizer system can't guarantee constant currents necessarily, so there is variation allowed for. With the Wacom pen magnet, it's weak enough to be noticeable.
TL;DR - Anyone with a course in EMF and an understanding of induction would be able to tell you this right off once they found out the pen uses a magnet. Incidentally, the magnet is also why you can do the hovering stuff so accurately. Other forms of non-touch gestures have many ways they could work too, but one way is your body affecting a field around the digitizer enough (whole hand swipe across without touching) that is is measurable.
It's also how inductive chargers (ones where you don't plug in the device) work. Changes in current flowing through wires creates a magnetic filed which, by orientating the wires, using loop/solenoid type configurations, this field changes (an AC signal). When your device is in the field, a similar configuration in the device is subjected to this changing field, and, more simply put, energy is exchanged via magnetic fields.
This is really cool because you've taken a changing current, which creates an electromagnetic field across other wires, which causes a flow of current.
Anyways, yeah avoid having magnets near devices depending upon EMF induction to work
In response. Regarding the case and holding it. I agree, does my head in sometimes. Hence why i may get a sleeve instead for when at work and use it one handedly most of the time. Regarding nfc, i aint convinced it would be affected until i get to test it. Regarding magnet, never noticed it until tested. Only effects 5mm of right side of screen and 15mm vertically, not the end of the world.
Just tested a piece of tin foil placed between handset and case at the point of the magnet. Didn't make any difference. Shame it cant be shielded.
Gotta say. The mobli is very well protected and the white case and mobile has yet to look dirty. Day job, hands get mucky.
Anyone got the case that the stand rotates? Does it make holding it less annoying?
Sent from my GT-N7100 using xda app-developers app
So, can the magnet cause any permanent damage to the gyroscope, compass and wacom bundle? I did notice that the compass is off by 10 degrees with the case on versus off.
I've used the phone for a few days without the case and it gets greasy too fast. So its back into the case again. It is pretty sturdy, just wonder if its possible to extract the magnet somehow! Maybe lodge a knife in there or something.
Anything that works by sensing the Earth's magnetic field, such as a compass, will be screwed up by a magnet in a case. It's really not worth buying a case that has a magnetic clasp...
I lodged a kitchen knife in between the magnet and the case and jerked around. It broke up into several pieces and came out attached to the knife. Since its either in my pocket or on a table the flap stays closed and no more magnetic issues.
...
FloatingFatMan said:
The NFC antenna is embedded in the Note 2's back cover.
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Click to collapse
isnt the NFC chip in the battery??
yusssi said:
isnt the NFC chip in the battery??
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Click to collapse
... Why would they put the NFC chip in the battery?
On the SIII, the NFC -ANTENNA- is in the battery... The chip is on the phone motherboard. In the Note II, the antenna is in the back cover. Are you blind? Have you never taken your back cover off?
don't be so harsh.
some of us ex galaxy nexus owners had NFC built-in batteries..
FloatingFatMan said:
... Why would they put the NFC chip in the battery?
On the SIII, the NFC -ANTENNA- is in the battery... The chip is on the phone motherboard. In the Note II, the antenna is in the back cover. Are you blind? Have you never taken your back cover off?
Click to expand...
Click to collapse

Nexus 4 Back Glass Replacement with Mahogany Veneer

The back glass on my Nexus 4 broke some weeks back. Short term I placed a large sticker over it knowing that I wanted to eventually do something more permanent.
Over the weekend I cracked out the glass, then cut/shaped a Mahogany veneer back replacement. In total I made 4 backs because the first 3 failed in one way or another... The one I finally installed is not perfect, but my time was running out...
Time lapse of the process... http://www.youtube.com/watch?v=cJyJMAYHteI
Enjoy, and let me know if you have any questions.
It's a little rough looking but I think the wood back is fantastic and would love to do that but i'm not sure of the science behind it. For instance, glass absorbs heat from the device.
thfreedumb said:
It's a little rough looking but I think the wood back is fantastic and would love to do that but i'm not sure of the science behind it. For instance, glass absorbs heat from the device.
Click to expand...
Click to collapse
Yes, the glass would likely be a better heat sink/transfer than this wood will be. I suppose I will have to watch that.
It is a little rough yes... in my defense this is the first time I have worked with veneer in this way. My skills and tools set have been found to be a little lacking...
I am thinking about what it would take to have one laser-cut.... (fells like cheating though... )
nice!
great job man! i got my nexus 4 a month ago and was dissappointed when i found no one doing what you did! my glass isnt cracked but i was considering making a back out of plexi glass and putting a picture under it or maybe leaving it clear. How hard was it to copy the camera and speaker holes? If you have any tips id greatly appreciate it
I wish that I had searched/seen this before I started... http://forum.xda-developers.com/showthread.php?p=40054899
I was thinking of doing something similar but with carbon fiber. Would you happen to have measured the thickness of the glass back? I've been searching but haven't found an answer. I'd like to know this before ordering my material and starting this project.
Sent from my Nexus 4 using Tapatalk 4
m34n1ng said:
How hard was it to copy the camera and speaker holes? If you have any tips id greatly appreciate it
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Click to collapse
The way I did it... it was harder than it should have been... see the link in the post above for what appears to be a very good template.
perfoliate said:
Would you happen to have measured the thickness of the glass back?
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Click to collapse
I didn't measure the glass, but I did measure the inset where the glass sat, it came out to .02" thick.
The veneer I used started at .04" thick after a little sanding a few coats of spar urethane it is /just/ taller than the inset.
Another point of interest I forgot to put in the original post...
I moved the flash cover over the camera and left the flash led exposed... I figured the camera needed the protection more than the flash did... So far I have not seen any real degradation in quality of photos...
nice!
itd be cool if you managed to etch the nexus logo on the wood.
m34n1ng said:
itd be cool if you managed to etch the nexus logo on the wood.
Click to expand...
Click to collapse
Just talked to a friend who runs a small laser-cutter shop... He is confident that he can etch the veneer. I think I would want to etch something more personal than "NEXUS" though...
I was thinking if I went with a wood back, I'd do a little woodburned engraving. It would add a little grip as well to the back.
Sent from my Nexus 4 using Tapatalk 4
Very cool looking!!
Sent from my Nexus 4
How hot does it get?
Who needs a moto x when you've got this?
Sent from my Nexus 4
facetubespam said:
How hot does it get?
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Click to collapse
I have seen reports of the CPU reaching 106 deg F. Certainly not enough to catch fire to the wood, but possibly enough to discolor it. As stated earlier the wood will not transfer the heat the way the glass would. However, I don't figure that wood is any worse than the plastic backs you find on most other phones...
Could you just use one of those instead and use glue to fix it? I don't know what it looks like under the glass.
http://dbrand.com/submodels/nexus-4
I think those are designed to sit on top of the glass... nice looking but I doubt they are thick enough to replace the glass.
I think it looks decent.
Sent from my Nexus 7 using xda app-developers app
Great work dude (Y)
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Nexus 7 2013 bezel replacement

Hello there,
my N7 second Gen device unfortunately got damaged during transport. The small bezel between screen and back case of the device got cracked at one corner, I can link to an picture if necessary (posting does not seem to work for me as a newbie).
A search did not bring up any results concerning repair options or parts, therfore I would be very happy for any advice what I can do to fix my tablet. Is the bezel available as a replacement part (I hope so), or is more nescessary?
Best regards
Hans
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You need to ask here http://forum.xda-developers.com/nexus-7-2013

Nexus 7 2013 bezel replacement

Hello there,
my N7 second Gen device unfortunately got damaged during transport. The small bezel between screen and back case of the device got cracked at one corner.
A search did not bring up any results concerning repair options or parts, therfore I would be very happy for any advice what I can do to fix my tablet. Is the bezel available as a replacement part (I hope so), or is more nescessary?
Best regards
Hans
View attachment 2574983
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[Q] Dirt in earpiece obstructing LED light - ideas for cleaning?

Hi all!
Does anyone else think that the Xperia Z1's LED notification light is dim?
Well, does anyone also have dirt in there obtruding even more so it's even dimmer than it should be?
Right now it looks like my LED light at the top is split in two halves, as there's a relatively large piece of dirt stuck in the middle. Still water doesn't get rid of it, and I'm not going to try pressurized water either :silly:
Has anyone else experienced and fixed this minor annoyance? I'm not going to try to poke it out with a needle either, I might just break the waterproof membrane for the earpiece.
As a side note/question, does anyone have a schematic of how the LED notification light and earpiece are positioned in the device? I've been wondering ever since I got the Z1, since it looks like the LED light is reflected by the plastic out of the device. Just out of curiosity of course :cyclops:
EDIT
The following has been suggested to use:
- A soft toothbrush (be careful not to ruin the waterproof membrane)
- A tiny piece of cloth
- Paper (if the dust or dirt isn't too far in)
- Can of air, in case the dirt isn't too stuck
- ...
Have you try with soft brush + water?
Sent from my C6903 using Tapatalk
omegahanggara said:
Have you try with soft brush + water?
Sent from my C6903 using Tapatalk
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I prefer not to use any kind of brush, I'm afraid it might ruin the waterproof membrane.
Although it's probably just fine to use one carefully, I really don't want to risk my most expensive device I've got.
Hermantje said:
I prefer not to use any kind of brush, I'm afraid it might ruin the waterproof membrane.
Although it's probably just fine to use one carefully, I really don't want to risk my most expensive device I've got.
Click to expand...
Click to collapse
Toothpick + tissue?
Sent from my C6903 using Tapatalk
Vacuum it
Sent from my C6902 using XDA Premium 4 mobile app
I have sensitive teeth so I use soft teeth brushes. The old ones I use for cleaning small things, like my Z1's earpiece.
BTW You are right. The LED is located just above the Sony logo and the case reflects the light and that is a good reason of why I have chosen a White phone over the black one. The white Z1 (And Z2 too) have a brighter light.
I will use an Air Gun with 10 bars pressure and shot directly on the led!! (just kidding) ..lol..
Compressed air, toothbrush, water, cloth.
Sent from my C6903 using XDA Premium 4 mobile app
I use the corner of a piece of paper. That works great.
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Just today I tried using a single toothbrush hair, though it didn't feel good to me.
I think there was a lump of dust stuck deep inside the LED area, and I had a hard time getting rid of it. I just hope I didn't somehow break the waterproof membrane :silly:
Oh and paper wouldn't have worked in my case, as it was too deep in (that's what she said?) and paper would've been too large too. There's still a lot of dust in the area but I'll just keep it this way. Or perhaps I'll try to dump water in the area to see if that helps (really hope the membrane is OK). I haven't found any good way of cleaning the LED area though, so any other ideas are welcome!
Can of air is doing the trick for me!
the led has to reflect off the black plastic. I glued a tiny bit of tinfoil onto the reflecting surface and now its twice as bright

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