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Wondering if the Tetrax magnet will hold Nexus 4 at the back?
http://www.tetrax.com/us/
I have this for my Galaxy Nexus, but I had to stick a metal at the back. Because I want to use the wireless charging in the future, I don't think its a great idea to stick the small metal at the back of the phone.
I'm not sure if the Nexus 4 actually have enough (metal/something magnetic) on the back of the inside of the phone to stick on the magnet? Not sure anyone tried this. Because I dropped my Galaxy Nexus and cracked it(in Canada), I'm still waiting to order one!
I'm so use to using this stuff, its really hard to go back to using a car holder.
If anyone know if this one would stick to a magnet, please let me know! Thanks.
I have no familiarity with that product but I just took the strongest magnet off of my fridge (holding up a 1lb whiteboard on there so it's not "industrial" strength but it's not a super weak one either) and I could barely feel the pull between it and my N4. In fact, now that I've done this, I'm concerned that it will be very difficult for them to make the Orb hold this phone at an angle without it sliding off.
Based on this and what I know of that product, I wouldn't expect it to work. That said, I'm not sure how super powerful that magnet is so it's kinda hard to say for sure.
HTH
I think a solution would be to put the metal on a TPU case like the Rearth Ringke Slim and then if you don't want to use the case daily, just leave it magnetized to the Tetrax in your car. That way you just created a dock for yourself in the car to use, a case if you want to use it, and you can even put a NFC tag on the case so that whenever you "dock" it in your car, it activates whatever car mode features you want.
facetubespam said:
I think a solution would be to put the metal on a TPU case like the Rearth Ringke Slim and then if you don't want to use the case daily, just leave it magnetized to the Tetrax in your car. That way you just created a dock for yourself in the car to use, a case if you want to use it, and you can even put a NFC tag on the case so that whenever you "dock" it in your car, it activates whatever car mode features you want.
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Click to collapse
That's what I plan to do when my nexus arrives. I have my GNex set up this way with Incipio Feather case, but I don't leave it on the magnet.
aichemist said:
Wondering if the Tetrax magnet will hold Nexus 4 at the back?
http://www.tetrax.com/us/
I have this for my Galaxy Nexus, but I had to stick a metal at the back. Because I want to use the wireless charging in the future, I don't think its a great idea to stick the small metal at the back of the phone.
I'm not sure if the Nexus 4 actually have enough (metal/something magnetic) on the back of the inside of the phone to stick on the magnet? Not sure anyone tried this. Because I dropped my Galaxy Nexus and cracked it(in Canada), I'm still waiting to order one!
I'm so use to using this stuff, its really hard to go back to using a car holder.
If anyone know if this one would stick to a magnet, please let me know! Thanks.
Click to expand...
Click to collapse
I've tried this with the Nexus 4 and the metal plates some right off of the glass back when you try to mount it on the XWAY. I'm looking for a solution to this. I love the XWAY and used it for quite a while with my SGS2. It was great with that but the Nexus 4's glass back is so smooth anything you stick on it will come off fairly quickly.
I am in the same boat, the stupid metal won't stick at the back. I'm going to contact my friend at 3m to see if they have any other double side tape that would work, I don't want to use something too strong that I can't pull it back out and not break the back glass =(
Why not put a screen protector on the back and then the metal thing on that?
Let's you still see the back, and when you want to remove the metal thing, you won't have to worry about hurting the phone.
aichemist said:
I am in the same boat, the stupid metal won't stick at the back. I'm going to contact my friend at 3m to see if they have any other double side tape that would work, I don't want to use something too strong that I can't pull it back out and not break the back glass =(
Click to expand...
Click to collapse
I'm thinking of getting one of the dBrad Black Carbon skins then sticking the XWAY plate on it. The reviews say it sticks really well to the Nexus 4's glass back.
http://dbrand.com/submodels/nexus-4
Although I might just take some super glue or something to assist the XWAY plate in adhering to the glass.
budbear1 said:
I'm thinking of getting one of the dBrad Black Carbon skins then sticking the XWAY plate on it. The reviews say it sticks really well to the Nexus 4's glass back.
http://dbrand.com/submodels/nexus-4
Although I might just take some super glue or something to assist the XWAY plate in adhering to the glass.
Click to expand...
Click to collapse
FYI - I took some super glue gel and glued the XWAY mount to the back of my Nexus 4, waited a couple hours for the glue to cure and it's working fine now. I figure I can always take a razor blade and scrape it all off sometime if the future since it's glass, after all. I can't say if it will work long term, it's stuck on there good and tight now. Cheers!
The metal plate slips off the back of my N4 too. I contacted Tetrax with no reply. So much for that.
any update for this? it seems that on website Nexus4 is supported:
"Suitable for the LG Google Nexus 4"
http://www.buybits.com/Product/1653...visible-Attraction-Phone-Mount-sku-16535.aspx
i'm wondering if it's a special metal pin with special glue or it's the standard one
pgr1979 said:
any update for this? it seems that on website Nexus4 is supported:
"Suitable for the LG Google Nexus 4"
http://www.buybits.com/Product/1653...visible-Attraction-Phone-Mount-sku-16535.aspx
i'm wondering if it's a special metal pin with special glue or it's the standard one
Click to expand...
Click to collapse
It's the same, just a website lying on its product. It don't works well with nexus 4's back.... The only sollution is glue or phone case...
Err0r-4o4 said:
It's the same, just a website lying on its product. It don't works well with nexus 4's back.... The only sollution is glue or phone case...
Click to expand...
Click to collapse
What about between the phone and case?- or is it too thick....
ddiehl said:
What about between the phone and case?- or is it too thick....
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Click to collapse
After getting it, i can assume that an 1mm sylicone case between magnet and chip on phone wont be stable, not strongh enough.
Btw, even Glue (superglue 3 universale) had some troubles to hold chip on phone (Our nexus is too smart to be glued^^).
I have seen some magnets that attach to the case of a phone then connect to a metal plate on the car or one that connects to the vents of the car. Does anyone make one strong enough to securely hold the Nexus 4 with a heavy duty case?
I have Tetrax Xway http://www.youtube.com/watch?v=awh6QP8-BBE
What would be even cooler, a magnetic car mount that's a charger like the mystical ORB that Google never released
hudy said:
I have Tetrax Xway http://www.youtube.com/watch?v=awh6QP8-BBE
Click to expand...
Click to collapse
Can you tell me the diameter of the circle that goes onto the back of the phone? The case I have for my Nexus 4 has circles on the back of it where the silicone skin sticks through.
mobileboost said:
Can you tell me the diameter of the circle that goes onto the back of the phone? The case I have for my Nexus 4 has circles on the back of it where the silicone skin sticks through.
Click to expand...
Click to collapse
I can't remember the exact sizes, but when I bought mine, it came with a few different-sized metal tabs, so you'd have a small variety to choose from.
xmarcc said:
I can't remember the exact sizes, but when I bought mine, it came with a few different-sized metal tabs, so you'd have a small variety to choose from.
Click to expand...
Click to collapse
That's good to know
mobileboost said:
Can you tell me the diameter of the circle that goes onto the back of the phone? The case I have for my Nexus 4 has circles on the back of it where the silicone skin sticks through.
Click to expand...
Click to collapse
Thanks for the excellent info. I ended up ordering the Xway, a single button to stick somewhere else, and I found an accessory pack with 6 more sticky magnets to place around!
I really need to stop buying stuff for my phone, but I swear it's addicting! :victory:
mobileboost said:
Thanks for the excellent info. I ended up ordering the Xway, a single button to stick somewhere else, and I found an accessory pack with 6 more sticky magnets to place around!
I really need to stop buying stuff for my phone, but I swear it's addicting! :victory:
Click to expand...
Click to collapse
do you need to put magnets on your phone/case for the xway to work?
neotekz said:
do you need to put magnets on your phone/case for the xway to work?
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Click to collapse
Yes, it looks like it sticks on with adhesive to the back of the phone.
Yes that is exactly how it works. The adhesive does not work on some cases so I have sometimes used crazy glue. I've tried a lot of systems for in car mounting and this is by far the best in my opinion.
Sent from my Nexus 4 using xda premium
X-Way is great for using vents as your mounting point, but if you want to mount it ANYWHERE you want, then get the FIX-WAY.
I have something simple and a lot cheaper, you might want to consider.
Cellet Magnetic Holder
Here's a youtube video which might explain it better:
http://www.youtube.com/watch?v=PpVahSd3PHU
I can attest that the magnet is extremely strong. The phone will not move at all through any bumps when driving. You stick the magnet to the back of your Nexus 4. I never took off the protective back skin that came with the nexus, so I didn't mind sticking the magnet to the back of the phone. On top of that I use the Diztronic protective case covering the back of the phone. Since that case covers the entire back of the phone, it covers the magnet and you can't even tell I have the magnet on at all. the magnet still works great through the protective case and still extremely strong.
madferretx said:
I have something simple and a lot cheaper, you might want to consider.
Cellet Magnetic Holder
Here's a youtube video which might explain it better:
http://www.youtube.com/watch?v=PpVahSd3PHU
I can attest that the magnet is extremely strong. The phone will not move at all through any bumps when driving. You stick the magnet to the back of your Nexus 4. I never took off the protective back skin that came with the nexus, so I didn't mind sticking the magnet to the back of the phone. On top of that I use the Diztronic protective case covering the back of the phone. Since that case covers the entire back of the phone, it covers the magnet and you can't even tell I have the magnet on at all. the magnet still works great through the protective case and still extremely strong.
Click to expand...
Click to collapse
From the reviews it is larger, but stronger maybe. I ordered one in case I can use them together or the other one is not strong enough.
I built a magnetic car dock for the nexus4 that I'm now selling.
http://www.makemobileinnovations.com/nexus4.htm
Here's a video of one of the prototypes showing how it works. The production version works the same except the magnet is stronger and it has cutouts for headphones, mic, camera, and speaker.
http://www.youtube.com/watch?v=ut6LzQSiAlM
http://www.amazon.com/gp/product/B008IOQ3K6?ie=UTF8&force-full-site=1&ref_=aw_bottom_links
Sent from my Nexus 4 using xda app-developers app
Does anyone know if applying the magnet directly to the back of the phone, will that STOP NFC from working?
I like the magnet idea but the location would disable inductive charging as well
ftarules said:
Does anyone know if applying the magnet directly to the back of the phone, will that STOP NFC from working?
Click to expand...
Click to collapse
The magnet does not but the metal plate on the back of the phone does break nfc. Check out this review by an n4 user:
http://www.amazon.com/Cradle-less-Q...e=UTF8&filterBy=addThreeStar&showViewpoints=0
Sent from my Nexus 4 using xda app-developers app
---------- Post added at 08:19 PM ---------- Previous post was at 08:17 PM ----------
lifeisfun said:
I like the magnet idea but the location would disable inductive charging as well
Click to expand...
Click to collapse
There is a metal plate at the back of the phone or underneath the case....not a magnet...
Metal may have a better effect on inductive charging....rather than hampering it...but this is just my guess...it may disable inductive charging as well....
Sent from my Nexus 4 using xda app-developers app
i have to tetrax x way too.. the metal bump does not interfere with nfc..
http://www.niteize.com/collection/steelie.asp
Everyone in my family has one. it's awesome
Right now Im running a bumper (well, the girlfriend, who is a phonebreaker, is running it because she is waiting for her substantial case to arrive) but I was wondering if there were other options.
Most times Im running naked and only using the bumper in situations when I thought there was real risk. The main reason is because i love the cascading touch screen, it feels much better working on the phone without my thumb crashing into the lip of a bezel or case when swiping/typing.
So my question is, has anyeone seen a case that clips onto the phone holding only onto the top/bottom (and corners) but maybe only going up half or less of the sides, as to not interfere with the drop off effect of the screen?
I think if I had something like that I would be more willing to run the case more often. I know it couldn't be a bumper, it would need a back to support the sides and I am prepared to live with not seeing the blingy back.
I've been looking for this too! Haven't found a case like that yet...
Sent from my Nexus 4 using xda app-developers app
I asked exactly this same question, and the answer is that no one has made such a case yet. However, I did buy the rearth ringke slim case, which grips the sides, but very shallow, and it is pretty good. You don't bump the sides until you are about three fourths of the way down the bevel.
Sent from my Nexus 4 using xda app-developers app
ryan stewart said:
Right now Im running a bumper (well, the girlfriend, who is a phonebreaker, is running it because she is waiting for her substantial case to arrive) but I was wondering if there were other options.
Most times Im running naked and only using the bumper in situations when I thought there was real risk. The main reason is because i love the cascading touch screen, it feels much better working on the phone without my thumb crashing into the lip of a bezel or case when swiping/typing.
So my question is, has anyeone seen a case that clips onto the phone holding only onto the top/bottom (and corners) but maybe only going up half or less of the sides, as to not interfere with the drop off effect of the screen?
I think if I had something like that I would be more willing to run the case more often. I know it couldn't be a bumper, it would need a back to support the sides and I am prepared to live with not seeing the blingy back.
Click to expand...
Click to collapse
Hmm, that would be awesome. I'd be interested in a case like such, as well.
Sent from my Nexus 4 using Tapatalk 2
Might want to send an email to Rearth, and inquire about them making one. They already have one for the Galaxy Nexus. Just a thought.
Sent from my Nexus 4 using xda premium
I'm waiting for this case from Amazon, its a leather flip down case and only grabs the 4 corners of the phone leaving most of the screen free, and i don't even need a screen protector with that.
http://www.amazon.com/gp/product/B000LGAF0I/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1
Basmatek said:
I'm waiting for this case from Amazon, its a leather flip down case and only grabs the 4 corners of the phone leaving most of the screen free, and i don't even need a screen protector with that.
http://www.amazon.com/gp/product/B000LGAF0I/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1
Click to expand...
Click to collapse
that looks nice!
amazon US : $12.70
amazon uk : £24.95 = $37.24 !!
its a shame, far to expensive for me (uk)
Basmatek said:
I'm waiting for this case from Amazon, its a leather flip down case and only grabs the 4 corners of the phone leaving most of the screen free, and i don't even need a screen protector with that.
http://www.amazon.com/gp/product/B000LGAF0I/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1
Click to expand...
Click to collapse
Damn, that in a thin TPU with no flip cover would be basically what I am looking for. I rock my phone naked 90% of the time now and the bumper when riding my motorcycle. I just cant stomach covering up a thin, attractive product with a massive case.
Email sent to Rearth. I would love a Nexus 4 version of their Galaxy Nexus Slim case.
kelvrick said:
Email sent to Rearth. I would love a Nexus 4 version of their Galaxy Nexus Slim case.
Click to expand...
Click to collapse
+1. Being saying that since the N4 came out. That GNex case was awesome.
ryan stewart said:
Damn, that in a thin TPU with no flip cover would be basically what I am looking for. I rock my phone naked 90% of the time now and the bumper when riding my motorcycle. I just cant stomach covering up a thin, attractive product with a massive case.
Click to expand...
Click to collapse
I use this case only in my car or in my pocket. When i get home it takes me 3" to remove it or put it back on. And i don't like screen or back protectors.
I am in dire need of something to replace my Incredible s.
I work around steel fabrication, meaning lots of steel dust and shavings. After a year, I already had to replace my Incredible s speakers because they became loaded with metal dust, and they are already going out again after a few months.
Anyone use their Nexus in smiler conditions?
I was about to hit the buy button when I read Sony announced the Xperia ZR (water and dust proof/resistant), and now am holding off to see the pricing. It also does away with the two only things that made me hesitate on the Nexus in the first place, memory (I can slide my 32gb card into it) and no glass back.
cjunk said:
I am in dire need of something to replace my Incredible s.
I work around steel fabrication, meaning lots of steel dust and shavings. After a year, I already had to replace my Incredible s speakers because they became loaded with metal dust, and they are already going out again after a few months.
Anyone use their Nexus in smiler conditions?
I was about to hit the buy button when I read Sony announced the Xperia ZR (water and dust proof/resistant), and now am holding off to see the pricing. It also does away with the two only things that made me hesitate on the Nexus in the first place, memory (I can slide my 32gb card into it) and no glass back.
Click to expand...
Click to collapse
Hm, metal shavings aren't gonna be good for any phone, even less so for the n4..
The grill holes for the ear piece are small and metal shavings shouldn't get in it to bad I've had to blow mine out a couple of times with canned air but it was from dust of mudding and then sanding dry wall.
Now as for the speaker I think this would go out very easily as the grill holes are bigger
Personally I would look at the HTC one, it's made from a solid price of aluminum and Injected molding for the plastic parts however I do not know what the speaker grills look like for the one. Just seems like it may do better around metal
Sent from my Nexus 4 using xda premium
If you can get a hold of something to block the openings on the phone, the N4 should be fine. I have no experience with anything near metal dust, but I imagine it could be pretty bad for any device's internals having direct exposure to it (short circuiting and whatnot).
That Xperia ZR sounds like it would be a better choice though.
The only real problem I have is that the speakers have magnets, and hold onto any steel dust that get through the screen covering them. The rest of the phone stays clean with a screen protector and tpu case. I never find any more then a few specks under the case or under the back cover.
when I pulled the speakers out they had a good teaspoon of steel dust stuck all around them.
I'm a steel fabricator as well. What I do is keep my nexus 4 in a zip lock bag. A thicker and smaller one that I got from a shipment of bolts.
Sent from my Nexus 4
Well.... I weld and work on heavy equipment everyday and have never had a problem. That said I take caution with my phone but there has been a few "incidents" and the only issue I have ever had was caused by media from a blasting machine scratching the screen. I am sure it has been exposed to metal shavings but have never seen any on the speaker grills. I love my nexus, but it isn't the most rugged phone. If I had genuine concern for contaminates from the work environment I would look into a dust and water proof model. Speaking of which Cat has its own android phone coming out....
Sent from my Nexus 4 using xda premium
I work around paper dust. It gets everywhere. I have a seidio active case. The dust pools at the speaker and camera openings.
Sent from my Nexus 4 using xda premium
There's also a waterproof ruggedized version of the s4 coming out
Sent from my Nexus 4 using xda app-developers app
why not put some extension at your tpu case to prevent metal dust to infiltrate?
back speaker is easy to protect...
Inviato dal mio Nexus 4 con Tapatalk 2
cjunk said:
....... and no glass back.
Click to expand...
Click to collapse
Your wrong my friend....... It does have a glass back! And I've seen it broken all ready.
a pigeon delivered this message.... ** your welcome **
gohan040 said:
Your wrong my friend....... It does have a glass back! And I've seen it broken all ready.
a pigeon delivered this message.... ** your welcome **
Click to expand...
Click to collapse
Not that it matters much here, but the "Z" has a glass back, the newly announces "ZR" is reported to have a plastic back.
what if you stick a piecee of tape over the speaker and ear piece before going to work everyday? sounds kinda cheap but it might work
Take a look at the Cat B15 http://catphones.com/ or JCB Toughphone http://www.jcbtoughphone.com/ or Fortis phones.
They are all listed on Amazon and would likely hold up better than the Nexus even in a hard case.
old thread update
For those that googled this lile i did
Been welding for 11 years and been through about 16 phones
A lifeproof case or a redpepper case keeps everything out.
If you dont like typing through a loose peice of plastic like myself
Clean out speaker ports daily with a magnet
Do not use compressed air. I have damaged several speakers with this method.
I bought this mount for my old galaxy s4, , and it worked fine.
It is designed so that you put a piece of high carbon metal in between the phone and the case, then you place it on the magnet and it sticks. It is a truly awesome dock, but I have a question. My S4 would not stick to it without the metal plate in the case, this phone will stick right to it without a case or the metal piece. This worries me.
Has anyone used a similar dock to this one, or can somebody let me know if this will damage my phone? I would just use it, but I heard that the camera's image stabilization is magnetic or something? I am hoping that somebody can give me some info regarding this.
Anybody?
Sent from my LG-VS980 using Tapatalk
Juicy92 said:
Anybody?
Sent from my LG-VS980 using Tapatalk
Click to expand...
Click to collapse
I guess most people are worried about putting a high powered magnet near their data.
vween said:
I guess most people are worried about putting a high powered magnet near their data.
Click to expand...
Click to collapse
Definitely not putting any kind of magnet near my phone.
Lol there's a magnet in the Quickview case
Sent from my LG-D803 using XDA Premium 4 mobile app
I also found out that QI chargers, like my phone supports, also contain a fairly strong magnet to hold the phone in position. The reason my phone was sticking to the magnet dock is because the QI receptor on the back of the phone (inside the back plastic) is magnetic so it can stick to the QI charging base.
Based on my research and my own experience, I am going to assume that it is safe considering I know 3 people using the dock have not had issues and my SGS4 was fine after a few months. I guess I answered my own question. I guess I was just looking for somebody who has used the dock for a longer period of time.
Thanks
I was considering this exact car mount. Glad someone is testing it cuz i was scared about the same thing. Make sure to let us know how it is!
Sent from my LG-LS980 using xda app-developers app
I use tetrax. Not sure if you have seen them. But I have been using them since my Iphone. And currently using it on my diztronic case.
However, you must place the magnet as closest to the buttons on the back side or your wireless charging wont work..
I recently purchased a similar mount that the OP posted, but with a suction mount. I haven't used it yet but will post back after using it.
Sent from my VS980 4G using xda app-developers app
Thanks arson. I don't use wireless charging, at least not yet. The dock I have has about a 1" by 2" super thin piece of metal to put in between the case and the phone. The dock technically stuck to the qi receptor, but I didn't want to do it that way. What I am trying to say is that my metal piece is going to definitely cover up some of the qi receptor, plus I'd rather thave the magnet farrtger away from my camera if possible
Sent from my LG-VS980 using Tapatalk
As long the magnet not near camera, it's fine.
I bought macro lens for smartphone and use magnet to stick on the camera. The result is, the OIS will be not working properly and the picture became blurry.
After that, I gave this lens to my little sister haha..
xdafoundingmember said:
Lol there's a magnet in the Quickview case
Click to expand...
Click to collapse
Couldn't find Quickview case available for G2. You mean Quick Window case? I have it and there is no magnet in it...
fhasovic said:
Couldn't find Quickview case available for G2. You mean Quick Window case? I have it and there is no magnet in it...
Click to expand...
Click to collapse
If the flap\cover on your case triggers the window widgets and wakes\suspends the phone then, yes, it does have a magnet in it.
Not sure how far back the practice goes, but my OG Droid used the same method to trigger Car Home when inserted into the car dock. I took the magnet out of the dock to prevent Car Home from launching.
Small high power neodymium magnets.
Sent from my VS980 4G using xda app-developers app
I have been using a Mountek (the guys who invented this) CD slot mount for three months or so, on Samsung Galaxy S3, Nexus 7 and LG G2.
No issues with magnets on any of the devices. You can wiki the topic.
Screen issues? No, we don't have CRT displays.
Storage? No, flash memory is not magnetic.
Compass? Maybe, hasn't affected me (Co-Pilot Standard, Google Navigation) YMMV
Location Services / GPS? No, GPS uses satellites.
Speakers? It has its own magnets.
Camera? If mechanical zoom, perhaps. Digital zoom, no.
While one can't believe everything on the internet, the consensus is overwhelming that magnets generally do no harm to modern smartphones. I'd be more worried about wireless charging, yet it's becoming mainstream.
cggorman said:
If the flap\cover on your case triggers the window widgets and wakes\suspends the phone then, yes, it does have a magnet in it.
Not sure how far back the practice goes, but my OG Droid used the same method to trigger Car Home when inserted into the car dock. I took the magnet out of the dock to prevent Car Home from launching.
Small high power neodymium magnets.
Sent from my VS980 4G using xda app-developers app
Click to expand...
Click to collapse
You're right! I have located one small magnet
Now that I've used the iMagnet suction mount for a few days I can chime in. It didn't affect my GPS signal and it didn't affect my camera. I didn't purchase a QI charger for my Verizon G2 so I can't comment on its affect. But I do love the flexibility this mount provides since it doesn't use any gripping arms. I'm using an Incipio Dual Pro case with the round magnet between the inner and outer shell. It fits perfectly.
Sent from my VS980 4G using xda app-developers app
I have been using a QI charge rand the suction based mount like this.
Everything has been working flawless. No issues with GPS/DATA/ETC... everything still works.
No need to clip or adjust the holder for the mount. Its just put up and it works.
The only major downside? Well, two or three actually..
CONS:
1. The metal piece is small and thin. But it will still affect the way you use your case. Most cases are built to have nothing between case and phone. Even putting that slim metal piece makes it a little challenging to make just about any case sit flush. Including the Quick Window case, basic TPU case (which has worked the best), and my new incipio case.
2. Because of the metal, it usually affects NFC because it is right there. There might be a sweet spot to make it work with the metal there, but I usually have to take my phone out of the case or at least remove the metal. Main reason the cheap TPU cases work well. East on and off.
3. Pretty much the same as #2, but the metal also affects QI charging. Again, there might be a sweet spot, but I havent found it.
If you don't use NFC or use a QI charger and can deal with A LITTLE ill fitting on the case you own, then I think this is one of the best mounts out there.
I did not stick the metal I just have it loose in the case so I can remove it if necessary.