does aluminum back cover or case >> interrupts the phone signal ? - Galaxy S II Accessories

to my opinion it must kill the signal
any experience at this issue ?

Yes there are post in here that state the likes of GPS dead or takes very long to lock on, once they take off the metal cover and replace original one its ok.

While GPS reception seems to be worsened by the metal back cover GSM/UMTS reception is not affected since the antenna is situated at the bottom of the phone. This is the actual spare part containing the loud speaker and antennas sitting underneath the bulge:
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Further notice that not all covers are wholly made from metal. As you can see from theses photos some still have a plastic frame with a metal plate attached.

inquisitor said:
While GPS reception seems to be worsened by the metal back cover GSM/UMTS reception is not affected since the antenna is situated at the bottom of the phone. This is the actual spare part containing the loud speaker and antennas sitting underneath the bulge:
Further notice that not all covers are wholly made from metal. As you can see from theses photos some still have a plastic frame with a metal plate attached.
Click to expand...
Click to collapse
While I do not have any GSM/UMTS reception problems outdoors or in public areas, I did experience some loss of reception quality when I'm at home. I sometimes experience 'a circle with a cross' sign, no bars at all. Though this problem only recently happen to me after I upgraded to Gingerbread 2.3.4 just days ago. When I was on 2.3.3 and have the metal back on, I did not see any reception problem when I'm at home.
Anyone have similar problem with 2.3.4?

yup, i can confirm no signal degradation for me, stll not test the gps though...

Recently I received a metal battery cover from eBay seller "easytradingco" which I repeatedly tested for its impact on reception in three different locations (balcony, office room, kitchen).
My conclusion is that there's a slight impact on UMTS/3G-reception reducing signal strength by ~5dBm with the metal cover attached (I made sure the phone was always connected to the same NodeB, which is 2km away from me and - at least on the balcony - in line of sight)
Interestingly WiFi-reception seems to be slightly improved by 2-3 dBm with the metal cover attached.
However GPS becomes nearly unusable with the metal cover. On each test run I gave the phone 3 minutes to get a satfix with AGPS data updated immediately before. Even outdoors (on the balcony) I couldn't get a satfix with only a single satellite found after 3 minutes, while with the original cover it took 10 seconds to detect 9 satellites of which 6 provided a signal strong enough to determine my position.
That said I wouldn't buy a metal cover again as it renders GPS unusable and also impacts UMTS-reception slightly.

Related

LCD portion not flush with keyboard portion?

The siding on the left portion of my phone is not flush with the keyboard portion. I can always feel the "lip" or whatever you want to call it. This is a Tmobile TP2
Its annoying that phone isn't fully flush with itself.
Does any one else experience this?
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I'm using a Telus TP2, but I can say that I haven't had any issues in regards to this.
yeaaa i have the same problem.
its as if the phone is crooked towards the left on the bottom half. if you slide your fingers together down the sides you feel the phone screen move in right as if it was not aligned correctly
Same problem here MPD suggested I go direct to HTC regarding this, as it was outside the 1 week direct swap window.
Apparently HTC have a 72 hour turnaround in the UK
Same issue here with both mine and my fiance's T-Mobile TP2, so I just assumed that's how they were. :\
glad to know i'm not alone & not just on Tmobile
wow i never even noticed this. Just another problem to add to the list.....how wonderful. I just posted my review of this phone before reading this thread and looking at my phone.
Aligning the two sections
I've found the same problem. Placing a small ruber patch at the end of the rail slots in the screen piece left my phone completely aligned.
Instructions:
Get some adhesive rubber piece that's about as thick as the misalignment in your phone. In my case, it was just one mm, and I found such a rubber piece as the filling between optional rubber "feet" that came with one router I had. I guess the chances of you having the same thing are dim, but the point is that this type of material shouldn't be difficult to find, just look around. Any hard rubber film with one adhesive side and the appropriate thickness should do.
Cut two pieces that are 1mmx1mm, and place them (tweezers will help in getting this done) right at the edge of the rails at the bottom of the screen piece. When viewed from below this should be at the left side of the bottom of the screen, right at the edge of the screen piece.
Close the keyboard to get the pieces stuck in place.
My phone is flush now.
cool I'll have to try that
Thanks for the tip, herbys. I had to do something similar on my Nokia N95 to fix the wobble in the slider.
I've had three T-Mobile TP2s so far and the lip is most noticeable on my third and current unit. My co-worker has one and his sits perfectly flush. I imagine it's just a small fluke on the assembly line, but I wonder how widespread the issue really is.

[Review] Soft Touch Pong Case

This Pong case seemed quite interesting after I had first heard about it. After doing a little research on this case, I found some interesting facts that the case itself claims to have. First of all, it says that reduces radiation exposure (SAR) by up to 64% and it improves signal strength by up to 56%.
Once I had received the package, I can say that it came in a nice package. The box contained a screen protector, a small cleaning cloth, and the case itself.
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The soft touch feeling (matte finish) of the case makes it feel really nice in the hand and also makes it non-slippery. It has all the cutouts it need for the USB connection, headphone jack, volume rockers, and the power button. There is also a cutout on the top of the case that makes the design of it look nice. Here are some pictures of the case.
Overall, the case itself is really nice, adds almost no bulk, and gives the phone great protection. I have yet to test out the signal improvements, so I can't say for sure that the case provides a signal boost. Any questions you guys have, I'll try my best to answer.
Link to the website..
http://www.pongresearch.com/samsung-galaxy-nexus.html
for 60 dollars it better make me bacon in the morning.
I don't know exactly what you're looking for, but these: http://en.m.wikipedia.org/wiki/Mail-order_bride should definitely make bacon for you. Not sure about phone protection though.
It seems like this case is not focused on style rather than protection, but I can't say for sure since I haven't used one yet. I would be interested if it weren't so expensive.
Sent from my Galaxy Nexus using Tapatalk 2
You made your slim Galaxy Nexus into a Tank...
PONG GALAXY NEXUS UNLOCKED CASE REVIEW ---> I live outside the Washington DC Suburbs. I performed several signal tests with and without case on. All test was performed on T-mobile Network, under exact same circumstances. My test is not an individual test, this review is posted after 10 tests with case and 10 tests without case. My house is at the sweet spot, where I get consistent (-107dBm,12% HSPA+, ASU:3) signal strength unless I touch phone (Then it drops).
WITHOUT CASE ---> 10 tests on same spot without touching phone with phone face up, SIGNAL STREGTH WAS (-107dBm,11-12% HSPA+, ASU:3).
WITH CASE ------> 10 tests on same spot without touching phone with phone face up, SIGNAL STREGTH WAS (-113dBm to -111dBm, 4-8% HSPA+, ASU:1-2)
*******WITH CASE ON my phone never crossed 8% or -111dBm signal strength. In addition, (Most of the time) it actually dropped out of HSPA+ network, and were stuck in to EDGE/2G network mode.*******
I also ran Network Speed tests using (Speed Test App) with and without case under same environment.
WITHOUT CASE ---> Find Server (10/10 times) within 10 Seconds Every time & Avg. Download Speed was 450kbps +/-50kbps. Avg. Upload Speed 200kbps+/-30kbps.Ping 400-1600.
WITH Case ------> Often Fail to Find Server (5/10) & Often Came with Error after 2 minutes (Cannot find server). It did find server 3/10 times, but in the middle of test signal dropped out, and I ended up having an error(Network Communication Error). However 2/10 it did finish test (After 1+ minutes to find Server) with Download Speed 89 & 120 kbps, Upload Speed 32 & 41 kbps. IT DIDN'T EVEN FINISH NETWORK TEST ON 2G/EDGE NETWORK.
CASE it self have very nice finish and looks really nice, soft touch finish also gives nice grip. My conclusion is don't waste your money, I will be returning my case. INSTEAD OF HELPING WITH SIGNAL, I ACTUALLY INTERFERE WITH SIGNAL, IT TAKES LOT LONGER TO FIND SIGNAL, and SIGNAL STRENGTH IS NOT AS GOOD AS PLAIN PHONE ALONE. IT KEEPS DROPPING OUT FROM HSPA+, and into 2G Network mode. In addition, in my 7 days of usage, I have not see any battery improvement made by case.
I HAVE NOT TESTED PONG CASE ON VERIZON OR SPRING NETWORK. SINCE ATT and TMOBILE HAVE SAME NETWORK, YOU SHOULD EXPECT SIMILAR RESULTS. THANK YOU. I WILL TEST THIS CASE FOR 1 MORE WEEK, AND IF I DON'T SEE ANY OTHER DIFFERENCE OR IMPROVEMENT OR DIFFICULTIES I WILL UPDATE MY REVIEW.
Hi tejasamin, any updates?
tejasamin said:
SINCE ATT and TMOBILE HAVE SAME NETWORK, YOU SHOULD EXPECT SIMILAR RESULTS.
Click to expand...
Click to collapse
Definitely not. Yes they are both GSM, but completely different networks and signal strengths would definitely vary.
And oh, what's with the uppercase?

[Q] Signal problem come two days after phone dropped in subway

Dropped my I317 from the lift to the floor inside Subway, height is around 3m plus.
It is still working well after the drop, Screen no damage, 4G LTE network connected, call quality well.
Just the screen protector get split.
But started this morning, it has totally no signal in my office building,
I get intermittent signal loss when I back home, some time 1 -2 par, some time no signal
When I go outside buildings, signal is good with 4G speed
Is this problem related with the drop?
How to fix it? replace antenna cable or flash modem?
Thank you for any sharing!
ie7 said:
Dropped my I317 from the lift to the floor inside Subway, height is around 3m plus.
It is still working well after the drop, Screen no damage, 4G LTE network connected, call quality well.
Just the screen protector get split.
But started this morning, it has totally no signal in my office building,
I get intermittent signal loss when I back home, some time 1 -2 par, some time no signal
When I go outside buildings, signal is good with 4G speed
Is this problem related with the drop?
How to fix it? replace antenna cable or flash modem?
Thank you for any sharing!
Click to expand...
Click to collapse
Sounds like you might have a old modem. Setting, about device, baseband version=modem
For newer modems look here>>Section #3:good:
Thanks Bajanman,
It seems that my baseband is still there, version I317UCBMK6,
I use the following 4,3 rom I317-UCUBMK6, what should I do with the modem setting?
[ROM][4.3][Dec-2013] AT&T I317-UCUBMK6/MJ4 *Stock* Rooted Odex/De-Odex/Odin By-Zen Arcade
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ie7 said:
Dropped my I317 from the lift to the floor inside Subway, height is around 3m plus.
It is still working well after the drop, Screen no damage, 4G LTE network connected, call quality well.
Just the screen protector get split.
But started this morning, it has totally no signal in my office building,
I get intermittent signal loss when I back home, some time 1 -2 par, some time no signal
When I go outside buildings, signal is good with 4G speed
Is this problem related with the drop?
How to fix it? replace antenna cable or flash modem?
Thank you for any sharing!
Click to expand...
Click to collapse
flash your kernel or stock rom i think it willl work fine after i get this problem in the past

Where is the lte antennas located?

I'm planning on installing magnetic plate under the back plate (circled in red) for my car mount and I was wondering where the antennas were for LTE. I didn't want the plates to interfere
According to the full ifixit teardown they are one of the orangey-gold areas at the top, on the inside of the rear case.
https://d3nevzfk7ii3be.cloudfront.net/igi/LKmLDjCoZLJLj2Jk.huge
Hi
Its a bit more complex than that unfortunately. The transmit cell antennas are at the bottom, this places them away from the ear. Receive antenna for cell calls are at the top along with Bluetooth, WiFi and GPS.
Regards
Phil
PhoenixTank said:
According to the full ifixit teardown they are one of the orangey-gold areas at the top, on the inside of the rear case.
https://d3nevzfk7ii3be.cloudfront.net/igi/LKmLDjCoZLJLj2Jk.huge
Click to expand...
Click to collapse
It says "the Wi-Fi, MIMO, and GPS antennae still reside on the rear case, along with the NFC antenna which formerly lived on its own control board. Unfortunately, those super convenient labels from the Nexus 5 have transformed into cryptic codes."
so the antennas are not near the area right under the fingerprint sensor right?
PhilipL said:
Hi
Its a bit more complex than that unfortunately. The transmit cell antennas are at the bottom, this places them away from the ear. Receive antenna for cell calls are at the top along with Bluetooth, WiFi and GPS.
Regards
Phil
Click to expand...
Click to collapse
do you think sticking a metal plate under the fingerprint sensor on top of the battery is a great idea or do you think it'll affect with my lte and wifi? I don't care about NFC, I just care about my signal
btort1 said:
...do you think sticking a metal plate under the fingerprint sensor on top of the battery is a great idea or do you think it'll affect with my lte and wifi? I don't care about NFC, I just care about my signal
Click to expand...
Click to collapse
Why not get an app like SignalCheck to monitor your signal strength while holding the metal piece in the spot you're considering?
Hi. Can someone tell, which antenna this leg on the motherboard goes to? (Highlighted with a red arrow on the pic)
Or point me at the data sheet for 5X. Thank you in advance!
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D855 GPS Fix (and possibly others)

There are some posts suggesting some hardware mods including foil e.t.c. not being to fond of this kind of tinkering I decided to read into the service manual (found on several different places, so not going to link it again) and came to the conclusion they were not targeting the correct location.
The following procedure is fairly simple (the g3 is actually fairly easy to work on), but requires bending two sensitive switches (other than that it does not even require removal of the motherboard).
WARNING: I am NOT responsible for ANY damage, problems or anything else you do to your phone, please ask someone to help you if you are uncertain or lacking experience!
Symptoms:
Long time to lock
Lock is intermittent (random signal loss)
No lock in crowded areas
Random location jumps
Inaccurate positioning
Fix:
Given that a GPS lock was possible and the problems occurred on multiple roms a hardware issue was the biggest suspect. For some time I held of opening the phone because previous phone's had proven quite difficult to disassemble and warranty still hadn't run out. Turns out it is nice and easy to open and look inside the g3:good:
Reading the D855 service manual on page 139 there is a section called "Checking GPS RF Signal path" (if you do not have a D855 please consult the correct manual, there could be differences between models), which points to a location on the top left side of the motherboard with some spring contacts. Given that these contacts are small my best guess was they were bent and would not connect properly anymore.
Get a small screw driver which snugly fits the screws beneath the cover (as a general tool tip always ensure the screwdriver (or bit) is the correct size)
Get a bowl/tray (or similar) to retain any removed items (this helps against missing screws/other small objects)
Power down the phone and remove the cover and battery
Remove all visible screws, take note of the one shorter screw by the camera (all other screws are the same length)
Open up the back plate
Bent the two connectors (see image below) slightly upwards away from the motherboard (DO NOT overdo this, breaking them would result in bigger issues, metal fatigue is easily triggered)
Reapply the back plate (should click into place quite easily)
Reapply the screws
Reinsert the battery
Add the cover (the cover contains the antenna)
Boot the phone
Test your GPS outside
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This thread is cool!
One of the few posts about this topic which point to the correct (GPS) antenna. This antenna is also used for diversity reception on one of the LTE bands.
The only thing I can add:
It is also possible to fix the issue by modifying rear housing. You can carefully remove the glued plastic tape with GPS antenna terminals from the rear housing and re-glue it using some double sided electrical tape (or something similar). This way antenna terminals will be more firmly pressing against the mainboard.
This method is a bit safer as upon failure only the rear housing needs to be replaced (instead of soldering the terminals to the mainboard). Of course modifying rear housing leaves visible trace (so warranty will be void).

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