iphone 3g verry poor signal - GSM-Forum

tomuxzz · 12-12-2010, 20:26

Hello, I got iphone witch has verry poor signal .I don't know why .Very often it goes to no service.And one interesting thing that ,when I turn off the 3G ,iphone don't find networks at all .Maby you know some soluttion how to fix this ?

I tried even restore .And when open iphone the signal gets little stronger.Maby one of fuse broken ?

tomuxzz · 12-14-2010, 08:06

No one knows any solution ?

it-repair · 12-14-2010, 11:41

First check if these Coil present or any line is broken

if not you can bridge this

important is also the connection from dock to Bezel/housing

lock to the dock. There are two rings. Both must be connected on top of the bezel holder, not under! Otherwise you have no good connection to the bezel. The bezel works like a antenna

Holder on bezel

tomuxzz · 12-14-2010, 14:55

Hello ,the bezel is fine ,because when i put other iphone mainboard the signal is verry good.I think that this item is fault because when i pushed him stronger the signal has became litle bit stronger

.But still no edge and signal strenght is almoust always at 2 .What if i push that component with hot iron ,maby he will stick better with mainboard ? If not i have bad mainboard is it posible to switch it ?

it-repair · 12-15-2010, 11:03

Ok.. this little Part is a coil. This all is HF technik. Not easy to understand..
I had some phones too, with this effect. I try'd to change this coil, but it changed nothing. Sometimes i lost this part when i solder this out, he flips away, and never found.. :-)
So i make a bridge with solder tin, and voila, i have a strong signal.

You can try this, but carefully, when this not works, you can place this coil back.

tomuxzz · 12-15-2010, 22:07

Quote:

Originally Posted by it-repair

Ok.. this little Part is a coil. This all is HF technik. Not easy to understand..
I had some phones too, with this effect. I try'd to change this coil, but it changed nothing. Sometimes i lost this part when i solder this out, he flips away, and never found.. :-)
So i make a bridge with solder tin, and voila, i have a strong signal.

You can try this, but carefully, when this not works, you can place this coil back.

Do you mean to short cut this part ?or what

?

it-repair · 12-15-2010, 23:50

yes shortcut... sorry for my english :-))

<DJ-JaaM-> · 12-23-2010, 04:45

Maybe i'm in the wrong post but, what happen if this same problem appears after UNLOCKING (you know... downgrading the baseband from 5.14.02 to 5.13.04).

Can somebody tell me what could it be???

mtle5554 · 12-23-2010, 18:14

How about 3G signal? My 3GS has got very poor 3G Signal as well. Any solution please? or unlocked tool with BB 6.15 not so perfect?

<DJ-JaaM-> · 12-31-2010, 18:45

Quote:

Originally Posted by <DJ-JaaM->

Maybe i'm in the wrong post but, what happen if this same problem appears after UNLOCKING (you know... downgrading the baseband from 5.14.02 to 5.13.04).

Can somebody tell me what could it be???

I could never imagine... My iPhone was opened by some kind of idiot that broke the PCB in the antenna pad part and that was the reason i had very poor signal...

Now it's solved just by making a short between the antenna and the PCB...

And let me tell you... iPad baseband (6.15) works perfect....

Greetings Community

rich_purser · 01-08-2011, 01:02

Hi there
I have the same problem is there any better pictures of the bezel / and the connector please, where on phone are they situated? (really excited as this seems to be the answer i've been looking for) but need to now if these fixes have worked and what exactly im looking for. Do I need to use special wire to bridge the gap?

Please help, I feel like I've been trapped in the X-Files for the iphone (the truth is out there) ....somewhere.

Thanks

Rich

w14 · 01-27-2011, 21:10

Hi...I was an idiot when I opened my iphone 3G for the first time

, and cracked the corner of the pcb where the antenna connector is. So now I have a very weak signal as well. Sounds like the same problem that DJ-JaaM had? Could someone (maybe JaaM?) tell me how to short this connection?
Thanks!

pabloenriqueb · 03-12-2011, 20:55

Hi...... I have the same problem and i dont know how i can resolve....i search in internet for 4 months witn no results....please you can tell me if you could sove your problem.....thanks and sorry for my english .... im from south america

samar_prince · 05-04-2011, 20:04

hey bro this is hardwear problam only change antina switch on the motherbord problam is clear

said123 · 05-09-2011, 05:51

working 100% tested
thanks

12-12-2010, 20:26	#1 (permalink)
tomuxzz Insane Poster Join Date: Oct 2009 Location: Lithuania Posts: 84 Member: 1147787 Status: Offline Thanks Meter: 12	iphone 3g verry poor signal Hello, I got iphone witch has verry poor signal .I don't know why .Very often it goes to no service.And one interesting thing that ,when I turn off the 3G ,iphone don't find networks at all .Maby you know some soluttion how to fix this ? I tried even restore .And when open iphone the signal gets little stronger.Maby one of fuse broken ?

12-14-2010, 14:55	#4 (permalink)
tomuxzz Insane Poster Join Date: Oct 2009 Location: Lithuania Posts: 84 Member: 1147787 Status: Offline Thanks Meter: 12	Hello ,the bezel is fine ,because when i put other iphone mainboard the signal is verry good.I think that this item is fault because when i pushed him stronger the signal has became litle bit stronger .But still no edge and signal strenght is almoust always at 2 .What if i push that component with hot iron ,maby he will stick better with mainboard ? If not i have bad mainboard is it posible to switch it ? Last edited by tomuxzz; 12-14-2010 at 15:04.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
6110 no signal	amana24	Nokia Legacy Phones ( DCT-1 ,2 ,3 ,L )	2	11-22-2001 11:41
5110 v.5.24 bad signal	mudboy	Nokia Legacy Phones ( DCT-1 ,2 ,3 ,L )	4	10-17-2001 01:55
Signal up and down	Moc	Nokia Legacy Phones ( DCT-1 ,2 ,3 ,L )	6	09-29-2001 10:57
how do you solve no signal - 5110?	philipal	Nokia Legacy Phones ( DCT-1 ,2 ,3 ,L )	6	09-29-2001 03:27
5110 drop no signal!!!	eureka8888	Nokia Hardware & Hardware Repair	0	09-16-2001 16:15

12-14-2010, 08:06	#2 (permalink)
tomuxzz Insane Poster Join Date: Oct 2009 Location: Lithuania Posts: 84 Member: 1147787 Status: Offline Thanks Meter: 12	No one knows any solution ?

12-14-2010, 11:41	#3 (permalink)
it-repair Freak Poster Join Date: Nov 2010 Location: Earth and around Posts: 326 Member: 1442842 Status: Offline Thanks Meter: 103	First check if these Coil present or any line is broken if not you can bridge this important is also the connection from dock to Bezel/housing lock to the dock. There are two rings. Both must be connected on top of the bezel holder, not under! Otherwise you have no good connection to the bezel. The bezel works like a antenna Holder on bezel

12-15-2010, 11:03	#5 (permalink)
it-repair Freak Poster Join Date: Nov 2010 Location: Earth and around Posts: 326 Member: 1442842 Status: Offline Thanks Meter: 103	Ok.. this little Part is a coil. This all is HF technik. Not easy to understand.. I had some phones too, with this effect. I try'd to change this coil, but it changed nothing. Sometimes i lost this part when i solder this out, he flips away, and never found.. :-) So i make a bridge with solder tin, and voila, i have a strong signal. You can try this, but carefully, when this not works, you can place this coil back.

12-15-2010, 23:50	#7 (permalink)
it-repair Freak Poster Join Date: Nov 2010 Location: Earth and around Posts: 326 Member: 1442842 Status: Offline Thanks Meter: 103	yes shortcut... sorry for my english :-))

12-23-2010, 04:45	#8 (permalink)
<DJ-JaaM-> Freak Poster Join Date: Apr 2007 Location: UIO - EC Age: 37 Posts: 158 Member: 483230 Status: Offline Thanks Meter: 25	Maybe i'm in the wrong post but, what happen if this same problem appears after UNLOCKING (you know... downgrading the baseband from 5.14.02 to 5.13.04). Can somebody tell me what could it be???

12-23-2010, 18:14	#9 (permalink)
mtle5554 Junior Member Join Date: Nov 2010 Location: Ho Chi Minh City, Vitetnam Posts: 26 Member: 1453758 Status: Offline Thanks Meter: 4	How about 3G signal? My 3GS has got very poor 3G Signal as well. Any solution please? or unlocked tool with BB 6.15 not so perfect?

01-08-2011, 01:02	#11 (permalink)
rich_purser Junior Member Join Date: Jan 2011 Posts: 1 Member: 1487836 Status: Offline Thanks Meter: 1	Hi there I have the same problem is there any better pictures of the bezel / and the connector please, where on phone are they situated? (really excited as this seems to be the answer i've been looking for) but need to now if these fixes have worked and what exactly im looking for. Do I need to use special wire to bridge the gap? Please help, I feel like I've been trapped in the X-Files for the iphone (the truth is out there) ....somewhere. Thanks Rich

01-27-2011, 21:10	#12 (permalink)
w14 Junior Member Join Date: Oct 2010 Posts: 1 Member: 1431277 Status: Offline Thanks Meter: 1	Hi...I was an idiot when I opened my iphone 3G for the first time , and cracked the corner of the pcb where the antenna connector is. So now I have a very weak signal as well. Sounds like the same problem that DJ-JaaM had? Could someone (maybe JaaM?) tell me how to short this connection? Thanks!

03-12-2011, 20:55	#13 (permalink)
pabloenriqueb Junior Member Join Date: Mar 2011 Posts: 1 Member: 1535264 Status: Offline Sonork: [email protected] Thanks Meter: 0	Hi...... I have the same problem and i dont know how i can resolve....i search in internet for 4 months witn no results....please you can tell me if you could sove your problem.....thanks and sorry for my english .... im from south america

05-04-2011, 20:04	#14 (permalink)
samar_prince Crazy Poster Join Date: Sep 2007 Location: LAHORE Age: 35 Posts: 58 Member: 584884 Status: Offline Thanks Meter: 7	hey bro this is hardwear problam only change antina switch on the motherbord problam is clear

05-09-2011, 05:51	#15 (permalink)
said123 Freak Poster Join Date: Mar 2008 Posts: 230 Member: 724260 Status: Offline Sonork: saidarif Thanks Meter: 66	working 100% tested thanks