[Q] Help : L720 Low Gsm Signal Indoor - Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot

I have GSM Unlocked Samsung l720 , currently its running 4.4.2 with base band VPUFNG2.
I have having good GSM signal out door , but indoor my GSM signal level gets under a lot of fluctuation and even goes to no network signal multiple times in a day.
I have tried other network sim cards as well , but the problem remains the same, while network signal on my other mobiles at the same location are up to mark.
I need help on it , if there is any flash-able modem file which can make my gsm signal stronger , also is it possible to flash i9500 modem file on l720.
Thanks in advance.

Related

Help!! No GSM Signal only works on 3g signal

I am unable to connect to GSM only network ... My N4 while roaming out of city limits doesnot catch GSM signal .. it only works with 3g signal .. I noticed this issue just a week back and it has kept me worried .. Can someone point me to a proper direction with regards to this issue.. I flashed the latest available radio JDQ39E but still no luck.. there is no GSM signal.. My nexus 4 has the latest 4.2.2 rom in it.:crying:
rajivenator said:
I am unable to connect to GSM only network ... My N4 while roaming out of city limits doesnot catch GSM signal .. it only works with 3g signal .. I noticed this issue just a week back and it has kept me worried .. Can someone point me to a proper direction with regards to this issue.. I flashed the latest available radio JDQ39E but still no luck.. there is no GSM signal.. My nexus 4 has the latest 4.2.2 rom in it.:crying:
Click to expand...
Click to collapse
Where are you at? Which network? There are areas (rare but there are) where t-mobile is wcdma (3g) only.
djdanska said:
Where are you at? Which network? There are areas (rare but there are) where t-mobile is wcdma (3g) only.
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Click to collapse
I am in India .. My Provider is Vodafone
Did you figure out this? I am experiencing the same issue on my HTC One. I am able to make Emergency calls, though..

[Request] I9506 Modems

Hello
I live in Romania and own a I9506 from other country and in some poor signal areas the phone loses signal and emergency calls only appears while other i9505 holds the signal from same carrier (Orange Romania).
I would like if someone would help with a few modems to try and see if there is a difference in the signal quality.
Thanks in advance
Adrian
So ... it seems that this device lacks the support ... Pitty for a device this powerful ... Wil sell and buy something else
Well you can extract modems by yourself. Just download the software you want and extract it with 7zip.
We don't know what's you're on now.
adiszep said:
Hello
I live in Romania and own a I9506 from other country and in some poor signal areas the phone loses signal and emergency calls only appears while other i9505 holds the signal from same carrier (Orange Romania).
I would like if someone would help with a few modems to try and see if there is a difference in the signal quality.
Thanks in advance
Adrian
Click to expand...
Click to collapse
Try and flash the modem from the nordic countries( http://www.sammobile.com/firmwares/3/?download=26191 ). I have the phone too, but i don,t have that problems with the signal, also orange Romania. I bought it from Sweden.
Just flashed the nordic rom... will post if it works or not. thanks all
Ok so the problem is this ... The phone does not connect to network on gsm mode ... if it's on auto lte/wcdma/gsm it works on wcdma. If i select gsm only it does not connect to network. On manual search it all goes ok finds all networks but when I sellect my carrier it says registering on network for about 3-5 mins and after that can't register to network error. On other phone it registers with edge speed.
What can I try ???

sim unlocked / low network signal problem

i have an sim unlocked I337 in pakistan prob is im having very low signals on almost all networks but when i use these sims on other phones the signals are ok only S4 has low coverage i have tried all modems available for model but same issue only one network is working correctly on S4 any idea what might be the problem need a fix for tha
is it like ATT models when unlocked gives a bit of low reception compared to other phones ?
mrashoo said:
i have an sim unlocked I337 in pakistan prob is im having very low signals on almost all networks but when i use these sims on other phones the signals are ok only S4 has low coverage i have tried all modems available for model but same issue only one network is working correctly on S4 any idea what might be the problem need a fix for tha
is it like ATT models when unlocked gives a bit of low reception compared to other phones ?
Click to expand...
Click to collapse
I unlocked my SGH-i337 and used sim cards in Thailand and Burma. No problem with reception.
Check the wireless bands use in Parkistan and play around with your network setting.
its GSM900 here and config screen shows GSM 900 available tried all network settings .. only GSM gsm and LTE etc...

Loss of signal, no WCDMA/LTE, only weak 2G GSM signal - what is wrong?

Hello,
I have a huge problem with my Galaxy S5 SM-G900F. I bought it abroad and when I used it for the first time in my country I saw, that there is a problem with 4G/WCDMA connection. When I put my sim card to the phone and set all the preferences in mobile connection menu to "Auto" there is no possibility to call or to recieve calls (even if i saw signal strength meter showing some marks). I can only recieve and making call when I set "only 2G" option and manually select my network. But signal is also very poor.
What I have checked yet:
1. Other sim also doesn't work good.
2. After *#06# i saw my IMEI and it is the same under the battery and on the box (doesn't start from "00") so i think that it is not missed (efs folder).
3. Change firmware with KIES and ODIN for the other version - no changes. Also flash some other "modem" files with Odin with no success in better signal.
4. When im on the free air the signal strength is even at maximum level, but immidiately after going to my house - there is no signal. I saw also, that when im in the city i can connect with 2G network (only), but when im on a village there is no signal at all (even 2G...)
Do you have any ideas what can be wrong? Is this hardware failure? Maybe something with antenna? What should I do before going to gsm service center? Maybe i should change kernel and try some of the custom roms?
Thank you for your help.
regards
Mario

Problem weak SIM(RIL) signal

hi all , before i have redmi note 4 i haven't any problem with sim signal, but now i have redmi note 7 the sim signal ( RIL) is so weak ; is ther a solution ( kernel or vendor or fixs) to increase signal strenth ; i am from Algeria maybe it have different ril configs.
Thanks in advance.
what is the solution to increase sim signal level, or best rom for resolving this.
yes it seems to randomly want to choose signals, i have a solution but requires root.
Try changing your Sim settings to 3G instead. It'll switch to HSPA bands which could be stronger vs LTE and similar speeds as well.
Try network cell info lite app in the play store and report back with both your LTE and HSPA dB readings.
Good LTE readings should be in the green 70-99 range.
Good HSPA should be green 60 -90 range

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