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[Idea] Super Antenna

I was wondering seen as how we have an external antenna couldn't you build something that attaches to it and improves phone signal or make a cantenna? Any suggestions on how to do this?
Sent from my HTC Sensation 4G using Tapatalk

I don't know how much help this will be but I love the DIY spirit so here are some of my ideas.
Connecting to the existing antenna array could be achieved by attaching wires into the existing contact points in the back plates, then route through the camera lens opening out of the phone. The wires will have to be thin so that is something to consider. i.e. more fragile at longer lengths.
The new antennas could be based existing off the shelf parts or from existing DIY projects for each respective technology, but AFAIK you cannot use a single cantenna type device. Due to the different frequencies used for WiFi/Bluetooth vs. GSM vs HSPA+. I am unsure about how many you will need as a minimum or if there are special power requirements between the different technologies involved here.
Power will have to be another consideration. Not 100% certain, but I believe to get these "super" antennas to be truly super, you will need to increase the power to them. This will of course lessen battery life. So that would be another consideration. This mod might spawn a separate battery mod/swap.
I am not sure if this is cost effective or not, but DIY doesn't always consider cost. Of course if you are planning on using this to power some autonomous super killer robot, that can record in 1080P, and stream back live VGA video using the hardware built into the phone this could work out pretty well.

What if you somehow took gold wiring like on the connectors, attached it to the connectors and ran it along the inside of the back cover?

graffixnyc said:
What if you somehow took gold wiring like on the connectors attached it to the connectors and ran it along the inside of the back cover?
Click to expand...
Click to collapse
This.... It might not shoot lasers, but this sounds like a good idea.
Sent from my HTC Sensation 4G using XDA App

Wow sounds like you guys are gonna start up your own company. I like people that think well!!!!!! All good ideas in here!!!!!
Sent from my HTC Sensation 4G

Well the first thing is does anyone know what each contact relate too?
Sent from my HTC Sensation 4G using Tapatalk

graffixnyc said:
What if you somehow took gold wiring like on the connectors attached it to the connectors and ran it along the inside of the back cover?
Click to expand...
Click to collapse
if this does improve reception htc should replace all our back covers, with this^^ already done.

linkmaster_6 said:
Well the first thing is does anyone know what each contact relate too?
Sent from my HTC Sensation 4G using Tapatalk
Click to expand...
Click to collapse
I think the one above the camera hole is for wifi because I saw a youtube video of a guy that took some tin foil and stuck it in the hole on the phone where that connector would make contact and it gave him a really strong wifi signal. He took out the foil and the signal dropped. So I'm thinking that the connector on the top is wifi. The strange thing is I also have an unbranded euro/asian sensation and it has one less connector than the TMO us one (but uses the same mobile bands/radios) and when I use that cover on my US sensation there is no signal difference. So I really wonder what that extra one is for, since I have noticed no signal difference when using one over the other on the US phone.

Hey guys Ive been giving this some serious thought and here are a couple of my ideas on this....I am looking for some serious Beta testers for my ideas, there is no money compensation for testing just fame and prestige......PM me if your intrested in beta testing for me..hurry I have a feeling a lot of people are gonna want in and space is limited.
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graffixnyc said:
I think the one above the camera hole is for wifi because I saw a youtube video of a guy that took some tin foil and stuck it in the hole on the phone where that connector would make contact and it gave him a really strong wifi signal. He took out the foil and the signal dropped. So I'm thinking that the connector on the top is wifi. The strange thing is I also have an unbranded euro/asian sensation and it has one less connector than the TMO us one (but uses the same mobile bands/radios) and when I use that cover on my US sensation there is no signal difference. So I really wonder what that extra one is for, since I have noticed no signal difference when using one over the other on the US phone.
Click to expand...
Click to collapse
Maybe T-Mobile uses AWS bands for HSPA+? I'm not sure if that's even possible, but I don't know much about that stuff.
Anyway, I believe the antennas are:
Above the camera: Wi-fi
Below the camera: BT? (correct me if I'm wrong)
On the bottom cover: Mobile network
And @joemm Lmao!

idavid_ said:
Maybe T-Mobile uses AWS bands for HSPA+? I'm not sure if that's even possible, but I don't know much about that stuff.
Anyway, I believe the antennas are:
Above the camera: Wi-fi
Below the camera: BT? (correct me if I'm wrong)
On the bottom cover: Mobile network
And @joemm Lmao!
Click to expand...
Click to collapse
No, My Asian sensation has the same bands as my tmo sensation. It has the AWS band and gets the same download speeds as my TMO version. If it wasnt the same bands I wouldnt even get 3g, I would be stuck on edge. Tmo's 3g and 4g(HSPA+) run on the same frequencies. So if you have a phone that doesnt have the AWS band and the phone supports 3g and 4g you will only get 2g speeds. I believe All the the sensations first released had the AWS bands. I think only now are they starting to release versions with different bands. I know a while back a sensation passed through the fcc with att bands. Maybe those are the ones we are seeing popping up on Bell now?

joemm said:
Hey guys Ive been giving this some serious thought and here are a couple of my ideas on this....I am looking for some serious Beta testers for my ideas, there is no money compensation for testing just fame and prestige......PM me if your intrested in beta testing for me..hurry I have a feeling a lot of people are gonna want in and space is limited.
Not only would this work!! It would stop the Aliens from reading your mind!!!!
Click to expand...
Click to collapse

Hmm, not sure how good this idea would be, but it's worth a shot
I'm thinking as the antenna has to be of a specific length to work, this length is determined by the frequenzy of the signal
Here is some examples : http://www.air-stream.org.au/wavelength

Utking said:
Hmm, not sure how good this idea would be, but it's worth a shot
I'm thinking as the antenna has to be of a specific length to work, this length is determined by the frequenzy of the signal
Here is some examples : http://www.air-stream.org.au/wavelength
Click to expand...
Click to collapse
This helps alot. I guess the only thing to do is to make an extended anttena and keep sticking it on contacts till i get better signal lol

graffixnyc said:
What if you somehow took gold wiring like on the connectors, attached it to the connectors and ran it along the inside of the back cover?
Click to expand...
Click to collapse
I was toying with this idea after I noticed the sub-par data connections I've been getting. Maybe there will be a new radio after we get s=off. Here's hoping...
Sent from my HTC Sensation 4G using XDA App

I have a new back cover coming and I might due some experimenting with the old one.

ive stuck tin foil in the back of it touching th ebottom two connecters and ive never suffered from death grip since , going on 2 weeks now :0

It should be possible if we could get a flexi pcb that we stick inside over the exisining connections and route outside and fold around that sticks down. I dont think we need more power, just a increased area. Should be easy to do.
Sent from my HTC Sensation Z710e using XDA App

[Q] Galaxy Tab 2 7 Wifi antena issue? Death Grip

Similar to iPhone 4, the wifi bar drops when I grab lower left corner in portrait mode. It doesn't seem to drop the connection completly but the bar goes down from 5 to 1..
Does anyone have this issue or could it be specific to my unit? Ready to swap if so
Sent from my GT-P3113 using Tapatalk 2

Crap! You are right! Happens on mine and on my buddy's tab.
Sent from my GT-P3113

Where is the antenna in this image?
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It is on the same side with sd card slot. Assuming that wifi signal goes down by grabing where the serial number sticker is in the picture. If it is a device specific issue I will return mine and swap it.
Pls share your story to figure if it is a design issue that all sgt2 7 have this flaw.
Sent from my GT-P3113 using Tapatalk 2

Correction. It is bottom left corner in the picture above. In the picture the main camera is on the top right.
Sent from my GT-P3113 using Tapatalk 2

happening on my tab also.

I am going to swap it for a new one. I will post if the death grip issue exists.
Sent from my GT-P3113 using Tapatalk 2

Get the app "wifi analyzer" if I turn my tab upside down it sees all my neighbors networks not just barely picking up my own...
Sent from my GT-P3113 using xda premium

Thanks for the suggestion. w/o death grip: -40dBm. with death grip -70dBm.
This confirms it and the signal drop occurs in a couple of seconds.
Sent from my GT-P3113 using Tapatalk 2

My tab has *EXCELLENT* wifi reception... when I hold it in portrait - upside down.
Only slightly less better in landscape either right side up or upside down. Seriously. Better even than my Droid X.
They had to put the antenna(s) somewhere. Leave it to an engineer to pick the worse location.

wellersl said:
My tab has *EXCELLENT* wifi reception... when I hold it in portrait - upside down.
Only slightly less better in landscape either right side up or upside down. Seriously. Better even than my Droid X.
They had to put the antenna(s) somewhere. Leave it to an engineer to pick the worse location.
Click to expand...
Click to collapse
Thanks and it justifies the swap to new one. I am actually glad to hear that it is not an universal issue.
Sent from my GT-P3113 using Tapatalk 2

The signal drops if I hold it along the lower left side in portrait, but I don't loose connectivity. While they could have put it somewhere else, the best place would be where the power and volume buttons are, but the buttons probably prevented that. If they put it anywhere else, there would be an issue with poor location when being held, or loosing signal while being held.

Swapped with new unit and the problem does not occur at the same level. The signal strength does fluctuate but within a smaller range than the previous one.
Sent from my GT-P3113 using Tapatalk 2

the5thtech said:
Swapped with new unit and the problem does not occur at the same level. The signal strength does fluctuate but within a smaller range than the previous one.
Sent from my GT-P3113 using Tapatalk 2
Click to expand...
Click to collapse
Good to know. Droping almost all signal is crazy... Mine drops one line; that is to be expected at some point.
Sent from my GT-P3113 using XDA

My tab also suffers from this death grip problem
Connection strength drops from -52 to -72 when I hold it the bad way.
Couldn't they better isolate the antenna ?
Otherwise it works perfecly fine.

dkoren said:
Couldn't they better isolate the antenna ?
Click to expand...
Click to collapse
They could. Right up to the point where it doesn't work at all.
RF layout and design is a fickle thing, where everything becomes a series of trade-offs. Personally, I'm amazed that works as well as it does.
For a living, I do PCB layout and manage/maintain an ECAD library. I recently put a part in the library - WiFI/Blutooth antenna chip. It's a tiny, really tiny thing with the inputs on opposite ends. At the time, I notice the datasheet said both inputs were GROUNDED. (?!?) I brought it up to the tech that submitted it - who called the manufacturer and we determined it was not a mistake. I did the layout, the boards were fabricated and assembled, and it works perfectly. It's just a mystery of modern RF technology.

I've spent some time with Samsung support. This is what they had to say:
Visitor: It sounds to be a hardware issue at least in my opinion... something with the antenna placement, bad isolation or something...
Samsung: Thank you for holding.
Samsung: Thank you for bringing the issue to our notice.
Samsung: I will make sure that the concerned department hear regarding this issue.

Since everyone sees this as a huge problem, where do you want to put the antennae that it wouldn't see a drop in signal during use? Put it at the top left, and it's going to be on the very bottom during landscape use and likely see issues. Put it on the top and you loose signal during landscape use, plus you have to deal with the headphone jack. Put it on the bottom and you need to move the USB connection and speakers, and you would deal with signal loss during landscape use. Put it on the bottom right, and you loose service the same as you do now. Put it on the top right, and you have to deal with the power/volume buttons and the IR blaster. So where does everyone want to put the wifi antennae then? A dongle that plugs into the device?

Be a left handed person
At least, top left side is less touched than other place unless move the power button and put WiFi there...
Anyways the intention of OP was to figure out if it is a design issue or a flawed device case. At last we know what it is and have some piece in our mind by admitting it as it is.
Knowing that Kindle fire has a similar form factor and use scenarios, I wonder if Kindle fire also shows the same death grip case.
Sent from my Lumia 900 using Board Express

If it were an issue with the case, you wouldn't see any change in signal, or you would have terrible signal all the time. It could be considered a design flaw but it is likely a design compromise. It could also be that they tried to put the wifi antennae elsewhere, but found that it had the best performance in the current location.

Wifi Antena - Double/Change Camera

Hi, yesterday i open my gtab and i saw the wifi antena its very small
Is there any way to change it? or amplyfi the wifi signal by changing it?
I was thinking changing for one of these:
http://www.ebay.com/itm/1pc-New-Lap...ectional_Network_Antennas&hash=item5ae928d096
http://www.ebay.com/itm/1pc-Laptop-...ectional_Network_Antennas&hash=item5ae6213b5f
http://www.ebay.com/itm/U-FL-Mini-P...ectional_Network_Antennas&hash=item4cf5ef6d82
I think this its the best:
http://www.ebay.com/itm/U-fl-Laird-...ectional_Network_Antennas&hash=item416946edf8
Problem solved (Antenna) i will get one OMNIDIRECTIONAL ANTENNA 9bi and try to get inside the tablet, i will post pictures by request.

anyone?

A solution for you would be this:
buy one of these (dont have to use fleabay of course, but it must be IPX to RP-SMA)
http://www.ebay.com/itm/U-fl-IPX-to...824?pt=LH_DefaultDomain_0&hash=item4a9fb5aa28
drill a hole on top/side to fit perfectly and screw it in, the ipx end will attach (snap on) to the motherboard.
then you can buy one of these:
http://www.ebay.com/itm/7dbi-2-4GHz...ectional_Network_Antennas&hash=item45fbc0cf30
or you could even get one of these:
http://www.ebay.com/itm/Netgear-Pro...ectional_Network_Antennas&hash=item415fa80efb
this one would not be portable but you would have a great signal!!
your only requirements are the IPX connector and an RP-sma adapter if the antenna you buy does not have an Rp-sma connector
Our antenna is like the second one I linked, just way smaller, probably 2 or 3 dbi.
In terms of signal, every 3dbi is a double in gain, so a 7db would be double or triple stock antenna strength
You have the right idea, but anything less than 5db would be a waste of time, you wont notice much, and the patch antennas are directional. The external rabbit ear type will receive from any direction
to mods: I am not a vendor and I hope linking to fleabay is not against the rules. I will change if needed.

redeyedjedi said:
A solution for you would be this:
buy one of these (dont have to use fleabay of course, but it must be IPX to RP-SMA)
http://www.ebay.com/itm/U-fl-IPX-to...824?pt=LH_DefaultDomain_0&hash=item4a9fb5aa28
drill a hole on top/side to fit perfectly and screw it in, the ipx end will attach (snap on) to the motherboard.
then you can buy one of these:
http://www.ebay.com/itm/7dbi-2-4GHz...ectional_Network_Antennas&hash=item45fbc0cf30
or you could even get one of these:
http://www.ebay.com/itm/Netgear-Pro...ectional_Network_Antennas&hash=item415fa80efb
this one would not be portable but you would have a great signal!!
your only requirements are the IPX connector and an RP-sma adapter if the antenna you buy does not have an Rp-sma connector
Our antenna is like the second one I linked, just way smaller, probably 2 or 3 dbi.
In terms of signal, every 3dbi is a double in gain, so a 7db would be double or triple stock antenna strength
You have the right idea, but anything less than 5db would be a waste of time, you wont notice much, and the patch antennas are directional. The external rabbit ear type will receive from any direction
to mods: I am not a vendor and I hope linking to fleabay is not against the rules. I will change if needed.
Click to expand...
Click to collapse
you say your antenna its 2 or 3dbi (
Our antenna is like the second one I linked, just way smaller, probably 2 or 3 dbi.
Click to expand...
Click to collapse
)
but also say
but anything less than 5db would be a waste of time
Click to expand...
Click to collapse
so, what about your antenna? did you see any difference from stock antenna?
i dont want to have any external antenna, because i use it most of times with some of my clients, and having some external antenna takes the "stylish" thing to the g-tablet, i have even consider to buy some carbon fiber for the back
so you say that the last option i consider (the black internal antenna rectangle) will be useless? or worst than the stock antenna?
can you send me a picture of the work you made with your tablet?

NO, the STOCK antenna is 2 or 3 dbi. If you upgrade to a 4dbi like the one you linked to, you will not notice a difference, but if you went up to 5dbi or 6 or 7, you will notice an improvement. They make patch antennas which may fit inside our tab, but if you do not get at least 5, it is a waste of time. I have not changed mine, but I have a lot of PC experience getting people wifi from long range. I have even set up a connection two miles away using a 24dbi dish from an mmds system. I am just saying that wifi reception is based on signal level, measured in DB, and every +3DB is equal to double the reception strength. If you go from our STOCK 3DBi to the one you showed, you will be mad that your signal is the same. go to atleast 5, and you will see a difference. Some people think their wifi is crappy because they do not realize our STOCK antenna is directional, and if facing the wrong way, signal will be weak. I only suggest the external antenna for a more noticeable improvement. You will have to choose style over strength or vice-versa.

redeyedjedi said:
NO, the STOCK antenna is 2 or 3 dbi. If you upgrade to a 4dbi like the one you linked to, you will not notice a difference, but if you went up to 5dbi or 6 or 7, you will notice an improvement. They make patch antennas which may fit inside our tab, but if you do not get at least 5, it is a waste of time. I have not changed mine, but I have a lot of PC experience getting people wifi from long range. I have even set up a connection two miles away using a 24dbi dish from an mmds system. I am just saying that wifi reception is based on signal level, measured in DB, and every +3DB is equal to double the reception strength. If you go from our STOCK 3DBi to the one you showed, you will be mad that your signal is the same. go to atleast 5, and you will see a difference. Some people think their wifi is crappy because they do not realize our STOCK antenna is directional, and if facing the wrong way, signal will be weak. I only suggest the external antenna for a more noticeable improvement. You will have to choose style over strength or vice-versa.
Click to expand...
Click to collapse
Thats great info! i made a research
and as you say, omnidirectional will be best option
so, instead of having an EXTERNAL antenna as you suggested
why no put inside the tablet?
will work the same right? and will be omnidirectional , right?
as the space inside gtablet with the both plastic covers isnt that much
i tought this its my best option:
http://www.ebay.com/itm/2-4GHz-7dbi...090?pt=LH_DefaultDomain_0&hash=item3f05ccd302
+
http://www.ebay.com/itm/RP-SMA-fema...761?pt=LH_DefaultDomain_0&hash=item4ab4023a39
I will just dismantle it, and make it happen inside the tablet (the plastic cover around antenna its useless right?its just for protection? since will be inside tablet no need protection, right?)
another options are this:
http://www.ebay.com/itm/Genuine-Lin...ectional_Network_Antennas&hash=item1e677a7dd1 (this its directional only, will be that bad?) (but its ufl/ipx :good
http://www.ebay.com/itm/Dual-Band-2...ectional_Network_Antennas&hash=item20c639d4fb (cheapest but 1 dbi less, its that much difference?)
http://www.ebay.com/itm/7dBi-Linksy...ectional_Network_Antennas&hash=item1e6e6818b5
As your an expert in this specific area, what do you suggest me from this options?
I know Linksys its a great company for wireless solutions, right?
but ,chinese omnidirectional 7dbi vs Linksys directional 7dbi
What you think will be better for my specific case? I know its hard, since its omni vs directional antenna, and also no-brand vs good company
Hope you can help me with this last questions
thanks

Get the cheapest one you can find. Actually, get 2 of them. All they are is a wire which is cut to the right wavelength, and they have a ball shaped ground plane towards the bottom. If you get one from a router, it will even have an IPX connector on the end of it already. I say get 2 because if you are careful, you can cut the outer rubber/plastic away and have just the wire, which will easily fit inside the gtab case, and still work even if you curl it around. They are really cheap, so if you get 2, you can mess up on 1, and still have the other.

redeyedjedi said:
Get the cheapest one you can find. Actually, get 2 of them. All they are is a wire which is cut to the right wavelength, and they have a ball shaped ground plane towards the bottom. If you get one from a router, it will even have an IPX connector on the end of it already. I say get 2 because if you are careful, you can cut the outer rubber/plastic away and have just the wire, which will easily fit inside the gtab case, and still work even if you curl it around. They are really cheap, so if you get 2, you can mess up on 1, and still have the other.
Click to expand...
Click to collapse
THATS EXCELLENT NEWS FOR ME!
just one last dub!
you say
curl it around
Click to expand...
Click to collapse
you mean like CURVED as an L or U (like in the picture)?
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like the image above?
and will work the same?
If it does will work the same, then i can buy a higher DBI antenna, and just curve it as an L in the angle of the Gtablet
i saw 17dbi antenna that are 20-30cm something lenght
so i can curve in the angle, and will fit great inside tablet
i'm right?

yes, you're right. If it is the right wavelength it will work, as long as it will fit. a 17dbi would be longer than that though, sounds like a FAKE. ALFA makes one that is 9dbi, thats the best REAL one I have seen.

redeyedjedi said:
yes, you're right. If it is the right wavelength it will work, as long as it will fit. a 17dbi would be longer than that though, sounds like a FAKE. ALFA makes one that is 9dbi, thats the best REAL one I have seen.
Click to expand...
Click to collapse
could you send me some ebay link for that one your talking (9dbi)

http://www.ebay.com/itm/WiFi-Wirele...ectional_Network_Antennas&hash=item45fa984463
This is not a cheapo chinese, be careful taking the plastic off. I own one of these, it works great, look at all that have been sold already.

old thread dig up
Any updates on this, I hate my WiFi connection, anyone got any pic

timritchieblue said:
Any updates on this, I hate my WiFi connection, anyone got any pic
Click to expand...
Click to collapse
i test a DIY wifi antenna, and didnt work better
but it work
so, yes, you can change with a better antenna
its just that a better antenna will be 10$+ and actually i dont want to spend that money just for an antenna

GPS Antenna Fix for desire s. + Wifi boost

GPS FIX FOR HTC DESIRE S
FIRST OF ALL! This is not my idea! Original thread: http://forum.xda-developers.com/showthread.php?t=2263078
I just wanted to make a better thread with pictures so people can see it better
And i don't actually use this phone.
Just using my old nokia
Guys i want to make a clear instruction for you if you are having trouble with your gps.
The problems with the phone before i did the fix:
- GPS not locking at all!
- GPS can't find any satellites!
- Endless waiting just to find (with luck) 1 satellite!
And now after i did this fix:
- GPS finds 5/6 satellite under 1 minute. (if you are in a good area sometimes 7/8.
- GPS Locks constantly. even when it finds less satellites.
- Navigation works perfect
And WIFI is now stronger. Now i can connect to the router from a longer distance. outside the house the wifi router still gives me full great signal
did not effect the battery life
Warning!!!!
Before You Begin. Iam not responsible for broken devices. You just gotta be gentle with it! And use your brains
Instructions With pictures:
http://www.youtube.com/watch?v=Ry6Dj5JPcvY
Watch this Video! At 0:52 seconds The only thing you need to do is remove the camera cover.
Don't unscrew anything!
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Video for proof:
http://youtu.be/CPfRNOY2phg
THANKS To: hirsty19784 ( for his idea ) :good:
Original Thread:
http://forum.xda-developers.com/showthread.php?t=2263078

antenna on battery cover is for GSM/3G....wifi and GPS are under camera cover

441Excelsior said:
antenna on battery cover is for GSM/3G....wifi and GPS are under camera cover
Click to expand...
Click to collapse
I have read in the forums that the battery cover is also cooperating with the GPS. I couldn't find anything good in google that shows where the gps and wifi antenna's are. But the good thing is that this fix works for me.

thank you soo much! Tried it today and worked!
I also put aluminium in these antenna's.

I can't watch the youtube video, it says "private".
The pictures' quality is very poor, couldn't you make better ones? Thank you
And, last question, do we have to unscrew something to open the phone in that way?

Giaki said:
I can't watch the youtube video, it says "private".
The pictures' quality is very poor, couldn't you make better ones? Thank you
And, last question, do we have to unscrew something to open the phone in that way?
Click to expand...
Click to collapse
Videos is now Fixed!
Sorry for the poor photo quality. I am not able to make better pictures.
Maybe as soon as possible i will get a new camera. So i can make new ones.
And no you don't have to unscrew anything.
Watch this Video: http://www.youtube.com/watch?v=Ry6Dj5JPcvY
At 0:52 seconds you can see how you can remove the camera cover.

Thanks a lot for sharing. It fixed my WiFi!! It was broken after severel throw downs :victory:

It's not so easy to open the camera cover, because of the glue under the cover.
I put two little pieces of aluminium over the contacts, but the wi-fi cover doesn't seem to be changed.
I'll try later with the gps antenna signal.
Anyway thank you for the tips and the guide.

I noticed a boost on my 3G signal level when I bent a little bit those pins under the batter cover, then I added two small pieces of aluminium foil on the battery cover, over the "golden" contact pins
View attachment 2035611

Warning against this mod!!!!!
I would be seriously cautious about modding your phone in this way, you can cause damage!!!!
Anyone who knows about transmitters will tell you that a transmitter needs a tuned antenna or it will suffer poor performance at best and damage at worst!
The gps unit although not a transmitter is very close to the other antennas and sticking foil inside your phone on just that antenna could still cause reflection of RF energy from the other units.
modding the antennas in any way of the transmitters within the phone is even more likely to cause damage, adding the foil changes the electrical characteristics of the antenna and what is called "SWR" (standing wave ratio).
When an antenna and feedline do not have matching impedances, some of the electrical energy cannot be transferred from the feedline to the antenna. Energy not transferred to the antenna is reflected back towards the transmitter. It is the interaction of these reflected waves with forward waves which causes standing wave patterns. Reflected power has three main implications in radio transmitters: Radio Frequency (RF) energy losses increase, distortion on transmitter due to reflected power from load and damage to the transmitter can occur.
So, mod your antennas at your peril.
Bending or cleaning the spring contacts that connect to the antennas will do no harm and could actually improve the connection but anything else comes with potential risks.
Steve.

Thanks Man! My wifi signal is now much stronger!
But sometimes when iam in a bad area the wifi drops a little bit... and goes up again.
The gps fix worked a bit faster. And my 3g boosted up a little bit.i have no idea how that happend but it's awesome!
It didn't give me a huge boost but it kinda boosted every thing a little bit up!

Thanks, this boosted all my signals, as I didn't know yet where the antenna's were located.

Tried this fix but honestly it didn't improve any signal, it did not make it worse either. Maybe it's a aluminium foil quality thing
send from my desire s

steve_htc_wizard said:
I would be seriously cautious about modding your phone in this way, you can cause damage!!!!
Anyone who knows about transmitters will tell you that a transmitter needs a tuned antenna or it will suffer poor performance at best and damage at worst!
The gps unit although not a transmitter is very close to the other antennas and sticking foil inside your phone on just that antenna could still cause reflection of RF energy from the other units.
modding the antennas in any way of the transmitters within the phone is even more likely to cause damage, adding the foil changes the electrical characteristics of the antenna and what is called "SWR" (standing wave ratio).
When an antenna and feedline do not have matching impedances, some of the electrical energy cannot be transferred from the feedline to the antenna. Energy not transferred to the antenna is reflected back towards the transmitter. It is the interaction of these reflected waves with forward waves which causes standing wave patterns. Reflected power has three main implications in radio transmitters: Radio Frequency (RF) energy losses increase, distortion on transmitter due to reflected power from load and damage to the transmitter can occur.
So, mod your antennas at your peril.
Bending or cleaning the spring contacts that connect to the antennas will do no harm and could actually improve the connection but anything else comes with potential risks.
Steve.
Click to expand...
Click to collapse
I completely agree with the above statement this is dangerous and may also make your signal directional (so good for one direction - away from the foil side and terrible for all other possible directions) - trust me you dont wanna be the idiot standing in a room trying to "aim" your phone for good signal. Plus there is an agps fix available at http://forum.xda-developers.com/showthread.php?t=1442032 which is much safer and definitely works locks up to 13 satelites and atains lock in about 7 to 15 seconds for me. It further speed things up by eliminating SSL encryption when it gets the network time NTP to use for GPS location fixing. As for WiFi get a better router and maybe update the radio software both easy to do and explained in detail on XDA forums, and more likely to work.

Thanks for Your article. I didn't tap a foil, but i just scrached joints. It bring my gps to life

This is what i did please correct me if is wrong if alu folia can damage something?
After that tested gps, had 0 satelites before this and now
My router in room is about 2 meters far from my bed and chair and signal was like this now that signal is from outside 7 meters trough 3 thick walls
and inside is
Thanks guys

Question T'Eyes CC3 2K - Slow 4G Internet / Antenna Placement

Hi guys,
Quick question: what is the best antenna placement for the T'Eyes CC3 2K for best signal reception ?
My installer placed the 4G & Wifi 5G antennas sticked on the left pillar (driver side, under the factory cover, next to each other - like 2 cm apart) and the GPS on the same side a little lower towards the dash.
4G reception was pretty slow compared to the test I did on my phone in the same location (same carrier, using speedtest app)
Then I had my installer move the GPS antenna on the opposite side (passenger pillar), leaving the 4G and 5G/Wifi in place, next to each other on the left pillar.
Didn't see a big improvement ...
I am using a SIM card installed in the external adapter located in my glove box.
Do you think the 4G mounted next to the 5G / Wifi is causing the slow speeds ?
Or is it just the carrier / GPS & LTE bands available on the T'Eyes CC3 2K for my location ?
In the same locations, my iPhone is fast on 4g
Thanks again !

alinush said:
4G reception was pretty slow compared to the test I did on my phone in the same location (same carrier, using speedtest app)
Click to expand...
Click to collapse
You're going to get a better signal and better speed on most mobile phones.
The modems are just better designed and usually support more frequency bands.
The same goes for 4g/5g routers. The throughput is often much lower than a mobile phone.
I get faster speeds tethering from my mobile to the head unit than I get by putting the SIM directly in the head unit.

j0hn83 said:
I get faster speeds tethering from my mobile to the head unit than I get by putting the SIM directly in the head unit.
Click to expand...
Click to collapse
Yes i was thinking maybe the smartphone has much better hardware for 4G/5G.
I will try to use the mobile hotspot for a few days and see how i like it.
Thanks for replying !

I was facing same problem and was wondering what i did wrong. In the beginning was thinking that the GPS antenna interfere (i put Cellular and GPS antenna in between 30 cm) but looks like i should get used with it

alinush said:
Hi guys,
Quick question: what is the best antenna placement for the T'Eyes CC3 2K for best signal reception ?
My installer placed the 4G & Wifi 5G antennas sticked on the left pillar (driver side, under the factory cover, next to each other - like 2 cm apart) and the GPS on the same side a little lower towards the dash.
4G reception was pretty slow compared to the test I did on my phone in the same location (same carrier, using speedtest app)
Then I had my installer move the GPS antenna on the opposite side (passenger pillar), leaving the 4G and 5G/Wifi in place, next to each other on the left pillar.
Didn't see a big improvement ...
I am using a SIM card installed in the external adapter located in my glove box.
Do you think the 4G mounted next to the 5G / Wifi is causing the slow speeds ?
Or is it just the carrier / GPS & LTE bands available on the T'Eyes CC3 2K for my location ?
In the same locations, my iPhone is fast on 4g
Thanks again !
Click to expand...
Click to collapse
What did the seller suggest when contacted for support?

I didn’t contacted the seller. I went back to their recommended installer and ask them to move the GPS antenna on the other side.
Still same behavior afterwards.
I think it’s just the hardware and the limited GPS/LTE bands supported by it
If we think about it, our smartphones have all antennas crammed into a small case without any issues. It’s just better hardware.

alinush said:
Hi guys,
Quick question: what is the best antenna placement for the T'Eyes CC3 2K for best signal reception ?
My installer placed the 4G & Wifi 5G antennas sticked on the left pillar (driver side, under the factory cover, next to each other - like 2 cm apart) and the GPS on the same side a little lower towards the dash.
4G reception was pretty slow compared to the test I did on my phone in the same location (same carrier, using speedtest app)
Then I had my installer move the GPS antenna on the opposite side (passenger pillar), leaving the 4G and 5G/Wifi in place, next to each other on the left pillar.
Didn't see a big improvement ...
I am using a SIM card installed in the external adapter located in my glove box.
Do you think the 4G mounted next to the 5G / Wifi is causing the slow speeds ?
Or is it just the carrier / GPS & LTE bands available on the T'Eyes CC3 2K for my location ?
In the same locations, my iPhone is fast on 4g
Thanks again !
Click to expand...
Click to collapse
This must be hardware issue, funny enough crappy YT57B very slow, fake parameters head unit had much better reception than my new Teyes CC3 6G, what a shame.
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