3gs 4.1 gsm signal dilemma - GSM-Forum

hbhbhb · 05-22-2012, 13:02

See if you ever came across this and share your solution por favor fellas.

IPHONE 3GS 4.1 baseband 6.15, jb and unlocked.

It will get full signal on one carrier SIM card and only 3 Bars on another.

All should have full gsm signal in my location but it is not the case with this iphone. i know it is not hardware issue like antenna as this phone gets full signal with all other carriers around.
I checked Network settings, swapped different sim of the same carrier, nada!

I am not sure what the deal is

any tips welcome

ribbentrop · 05-22-2012, 13:10

Do you know how many bands are used in iPhone ?

hbhbhb · 05-22-2012, 13:14

what do you mean my friend?
if i wasnt clear enough let me repeat that the same sim on another phone in the exact same location gets full signal

The iPhone is a quad band GSM device meaning that it can use all of the GSM frequencies around the world. The frequencies are 800/1900 (US) and 900/1800 (Europe).

ribbentrop · 05-22-2012, 13:40

Quote:

Originally Posted by hbhbhb

what do you mean my friend?
if i wasnt clear enough let me repeat that the same sim on another phone in the exact same location gets full signal

The iPhone is a quad band GSM device meaning that it can use all of the GSM frequencies around the world. The frequencies are 800/1900 (US) and 900/1800 (Europe).

This is hardware problem, sure . Check up Apple hardware section

hbhbhb · 05-22-2012, 13:47

dude, it cant be hardware since this iphone gets full signal with other sims! it is only with this particular carrier that has 3G sims, that the iphone gsm signal drops to 3 bars

ribbentrop · 05-22-2012, 14:26

This operator might use another band, open iPhone schematic and you'll see how many ways are used to get signal from antenna . For each band - own way .

hbhbhb · 05-22-2012, 15:49

Thanks man, i will continue and hope to find a tweak or something to get better signal. Good thing 3G is available, and the prob isnt crucial

hbhbhb · 05-22-2012, 16:07

found out that as soon as 3G gets turned off, friggin signal goes up to full bar. WTF
Anybody knows of a tweak to trick this biatch

hbhbhb · 05-22-2012, 18:29

Any guru out there to come up with a fix and have both 3G and full GSM signal.
As soon as I enable 3G , GSM signal loses two bars
disable 3G, then it gets full signal

Brka · 05-22-2012, 18:38

sounds weird,
but you should try with another identical phone,
on same place, same thing.

p.s. 3G network, operates at hihger band - higher band = lower signal
so, do the testing with another same device, if showing same,
than it's operator low power on 3G network.

p.s.2 i had some strange issues with one 3Gs on 6.15 BB,
worked normal on 3G, but on 2G being unreachable,
customer told me it was working normal before BB 6.15,
so consider that too ...

b.r.
Alex

hbhbhb · 05-22-2012, 18:52

Thanks for the info Alex.Most likely it is the provider here. I should be getting some 3g's shortly and will do some testing. My windows phone all are getting full signals with the same sim card.

ribbentrop · 05-22-2012, 18:55

It's well known problem with the SKY, try to rehot it .

hbhbhb · 05-22-2012, 19:12

YEAH umma try to get a plan out of here in search for a better sky haha

Brka · 05-22-2012, 22:12

Quote:

Originally Posted by hbhbhb

YEAH umma try to get a plan out of here in search for a better sky haha

he probably thought about SKYWorks RF ic in the phone ...
correct me if i am wrong

b.r.
Alex

ribbentrop · 05-23-2012, 04:36

Yes, of course . You are right

05-22-2012, 13:02	#1 (permalink)
hbhbhb Insane Poster Join Date: May 2012 Posts: 94 Member: 1759223 Status: Offline Thanks: 18 Thanked 10 Times in 10 Posts	3gs 4.1 gsm signal dilemma See if you ever came across this and share your solution por favor fellas. IPHONE 3GS 4.1 baseband 6.15, jb and unlocked. It will get full signal on one carrier SIM card and only 3 Bars on another. All should have full gsm signal in my location but it is not the case with this iphone. i know it is not hardware issue like antenna as this phone gets full signal with all other carriers around. I checked Network settings, swapped different sim of the same carrier, nada! I am not sure what the deal is any tips welcome

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05-22-2012, 13:10	#2 (permalink)
ribbentrop No Life Poster Join Date: Sep 2003 Location: Ukraine Age: 40 Posts: 3,120 Member: 40400 Status: Offline Thanks: 166 Thanked 789 Times in 462 Posts	Do you know how many bands are used in iPhone ?

05-22-2012, 13:14	#3 (permalink)
hbhbhb Insane Poster Join Date: May 2012 Posts: 94 Member: 1759223 Status: Offline Thanks: 18 Thanked 10 Times in 10 Posts	what do you mean my friend? if i wasnt clear enough let me repeat that the same sim on another phone in the exact same location gets full signal The iPhone is a quad band GSM device meaning that it can use all of the GSM frequencies around the world. The frequencies are 800/1900 (US) and 900/1800 (Europe).

05-22-2012, 13:47	#5 (permalink)
hbhbhb Insane Poster Join Date: May 2012 Posts: 94 Member: 1759223 Status: Offline Thanks: 18 Thanked 10 Times in 10 Posts	dude, it cant be hardware since this iphone gets full signal with other sims! it is only with this particular carrier that has 3G sims, that the iphone gsm signal drops to 3 bars

05-22-2012, 14:26	#6 (permalink)
ribbentrop No Life Poster Join Date: Sep 2003 Location: Ukraine Age: 40 Posts: 3,120 Member: 40400 Status: Offline Thanks: 166 Thanked 789 Times in 462 Posts	This operator might use another band, open iPhone schematic and you'll see how many ways are used to get signal from antenna . For each band - own way .

05-22-2012, 15:49	#7 (permalink)
hbhbhb Insane Poster Join Date: May 2012 Posts: 94 Member: 1759223 Status: Offline Thanks: 18 Thanked 10 Times in 10 Posts	Thanks man, i will continue and hope to find a tweak or something to get better signal. Good thing 3G is available, and the prob isnt crucial

05-22-2012, 16:07	#8 (permalink)
hbhbhb Insane Poster Join Date: May 2012 Posts: 94 Member: 1759223 Status: Offline Thanks: 18 Thanked 10 Times in 10 Posts	found out that as soon as 3G gets turned off, friggin signal goes up to full bar. WTF Anybody knows of a tweak to trick this biatch

05-22-2012, 18:29	#9 (permalink)
hbhbhb Insane Poster Join Date: May 2012 Posts: 94 Member: 1759223 Status: Offline Thanks: 18 Thanked 10 Times in 10 Posts	Any guru out there to come up with a fix and have both 3G and full GSM signal. As soon as I enable 3G , GSM signal loses two bars disable 3G, then it gets full signal

05-22-2012, 18:38	#10 (permalink)
Brka No Life Poster Join Date: Jun 1999 Location: Serbia Age: 37 Posts: 2,167 Member: 163 Status: Online Thanks: 525 Thanked 818 Times in 317 Posts	sounds weird, but you should try with another identical phone, on same place, same thing. p.s. 3G network, operates at hihger band - higher band = lower signal so, do the testing with another same device, if showing same, than it's operator low power on 3G network. p.s.2 i had some strange issues with one 3Gs on 6.15 BB, worked normal on 3G, but on 2G being unreachable, customer told me it was working normal before BB 6.15, so consider that too ... b.r. Alex

05-22-2012, 18:52	#11 (permalink)
hbhbhb Insane Poster Join Date: May 2012 Posts: 94 Member: 1759223 Status: Offline Thanks: 18 Thanked 10 Times in 10 Posts	Thanks for the info Alex.Most likely it is the provider here. I should be getting some 3g's shortly and will do some testing. My windows phone all are getting full signals with the same sim card.

05-22-2012, 18:55	#12 (permalink)
ribbentrop No Life Poster Join Date: Sep 2003 Location: Ukraine Age: 40 Posts: 3,120 Member: 40400 Status: Offline Thanks: 166 Thanked 789 Times in 462 Posts	It's well known problem with the SKY, try to rehot it .

05-22-2012, 19:12	#13 (permalink)
hbhbhb Insane Poster Join Date: May 2012 Posts: 94 Member: 1759223 Status: Offline Thanks: 18 Thanked 10 Times in 10 Posts	YEAH umma try to get a plan out of here in search for a better sky haha

05-23-2012, 04:36	#15 (permalink)
ribbentrop No Life Poster Join Date: Sep 2003 Location: Ukraine Age: 40 Posts: 3,120 Member: 40400 Status: Offline Thanks: 166 Thanked 789 Times in 462 Posts	Yes, of course . You are right