Hello everyone, the thing is this:
I just bought a N975U yesterday, as I always do, I flashed the firmware and changed it to N975U1 because I don't live in US. After I changed it, I just noticed that in different areas of my city I have Internet signal by mobile data but I cannot make calls or anything because it looks like I don't have a mobile network connection. It's really weird because if I'm not connected to any mobile network I shouldn't have mobile data, but I do. In addition, if I activate the airplane mode and deactivate it right after, it goes backs to normality (i can make calls, etc) for a few minutes, and then it lost the mobile signal again.
Right now I'm gonna proceed to change my cellphone because it's under warranty, but the question is: Do you think that it was caused by the flash, or is it a hardware problem? (it's important to say that I didn't test the cellphone prior to the flash and therefore I cannot confirm if it was giving the problem or not), I want to know your opinions in order to flash the new one or better stay with an outdated version that works properly
oscarballadares said:
Hello everyone, the thing is this:
I just bought a N975U yesterday, as I always do, I flashed the firmware and changed it to N975U1 because I don't live in US. After I changed it, I just noticed that in different areas of my city I have Internet signal by mobile data but I cannot make calls or anything because it looks like I don't have a mobile network connection. It's really weird because if I'm not connected to any mobile network I shouldn't have mobile data, but I do. In addition, if I activate the airplane mode and deactivate it right after, it goes backs to normality (i can make calls, etc) for a few minutes, and then it lost the mobile signal again.
Right now I'm gonna proceed to change my cellphone because it's under warranty, but the question is: Do you think that it was caused by the flash, or is it a hardware problem? (it's important to say that I didn't test the cellphone prior to the flash and therefore I cannot confirm if it was giving the problem or not), I want to know your opinions in order to flash the new one or better stay with an outdated version that works properly
Click to expand...
Click to collapse
Did you try resetting the phone yet to see if that fixes anything?
Related
Hello, guys!
I am from Russia and my English is very bed.
I have next problem with my device: raphael loses mobile network every 30-45 minutes, when I didn`t work with it. The network indicator shows an excellent signal, but subscribers cannot phone to me. But, when I use device at home (or work), where signal is very good and stable, this problems didn`t shows.
May be someone have such problems too??
My device certified for Russia.
Could be a network issue, should test a different phone in the areas you have trouble in, see if the trouble still exists, If not, pop sim back in to touch pro, see if problem exists still.
I think, that the phone can`t found the nework, after lost it (when, for example, the signal is very slow). Because, if I soft reset the device, it works well!
About my problem also write here
Heyho,
about three weeks ago, my N5 suddenly lost it's signal over night and shows me "Emergency calls only" and it won't register into any network, just giving "Selected network unavailable".
When this occured my N5 had 4.4.2 stock ROM and rooted. I've unrooted it and updated to 4.4.4, but I still got the same problem.
Problem occurs with any simcard, while simcard works with other phones just fine.
Have deleted and reconfigured APN, but didn't make any difference.
I get a signal every few days, but I still can't receive text/calls or call/text anyone and my mobile data doesn't work.
I even tried to downgrade to 4.4, but that didn't solve my problem either...
I'm from Germany, but in New Zealand at the moment, so I really need my phone in case of emergencies and to stay in touch with family/friends.
I have been searching for a solution since it started, but have not been able to find anything that worked.
Sending it back to Google isn't an option right now because I am travelling.
I am really thankfull for any suggestions or if anyone knows how to fix this problem!
Cheers
Have you checked to make sure the network setting says 2g/3g/LTE preferred. Because I had this problem when it was switched to 2g only and was fixed by the above option
If the above fails trying going to your dialer and typing *#*#4636#*#*. Go into phone information and you should see a drop down box to select your network mode. Play around with those until you get a signal but you might not want to try CDMA options (WCDMA is ok) since you're on a GSM network.
Sent from my Nexus 5 using XDA Free mobile app
had exactly the same issue as you mentioned. Nexus 5 tends to lose network without any logical explanation and it tends to work at one place but stop showing network if you walk half a mile down the road (or may not show any network anywhere). Google has released an update in June in which they have updated the modem to solve the problem..given that I am in India and the June update was for India, Australia and Newzeland, it worked like a charm for me (all i had to do was flash the modem from twrp)..people as far away as netherlands have reported the modem to work for them..
NOTE: IF U INTEND TO FLASH THE LATEST MODEM, DO NOT FORGET TO TAKE A BACKUP OF YOUR CURRENT MODEM PRIOR TO FLASHING THE NEW ONE..
check your sim card. if you can, try someone elses.
Alright,
I've tried every thing again so far, but nothing seems to work.
Sitting in the library, I noticed that I get a signal, when connected to WiFi, which stays for 1-2 hours after disconnecting.
But I still can't make any calls or text and mobile data doesn't work though the APN is correctly configured and and data enabled.
I really hope to be able to solve this problem somehow, don't want to put aside my beloved N5 :/
_____________________________________________________________________________________________________________
Edit: Haven't found any solution so far and bought a new phone for the moment until I'm able to send it back to Google.
Might be an hardware issue and not software related.
Cheers
Kimpfimp said:
Alright,
I've tried every thing again so far, but nothing seems to work.
Sitting in the library, I noticed that I get a signal, when connected to WiFi, which stays for 1-2 hours after disconnecting.
But I still can't make any calls or text and mobile data doesn't work though the APN is correctly configured and and data enabled.
I really hope to be able to solve this problem somehow, don't want to put aside my beloved N5 :/
_____________________________________________________________________________________________________________
Edit: Haven't found any solution so far and bought a new phone for the moment until I'm able to send it back to Google.
Might be an hardware issue and not software related.
Cheers
Click to expand...
Click to collapse
hey kimpfimp... u r not alone .. ive had this problem for 2 months now .. .. i have a nexus 5 and i have this exact same problem .. leads me to believe maybe its software related .. started after lolipop .. havent been able to find a solution yet !
worst part is that it is happening on an Replacement device after i RMAd my first nexus for a power button problem !!
i hope its software related and can be fixed .. because google is now refusing to rma this as im now out of my warranty period !
This is what I told support, but they wouldn't help me:
I have the GSM and 3G frequencies, but still it disconnects for a 15 seconds to 3 minutes a few times a day.. It disconnects from all phone services, even though I have great reception/signal. Why? How can I fix it? I saw this 'preffered type' of network or something in these advanced testing settings where you could change between alot of different network types like WCDMA, TD-SCDMA, LTE and so on, is there something I have to change there? If it helps I live in Norway.
""
So this has been going on for a long time, now I got a suggestion that it might help to flash new radio software (.zip?). I know about adb, fastboot and flashing using recovery, but I don't know what radio to flash, if tharæt's the problem. The phone can also use 15-30seconds to turn on WiFi, from what I know this might also be related to the radio software.
If you want pictures or more details, just ask
Thanks in advance!
Hello
Whitch software?
Just for test: switch off the wifi and test that your problem goes away or still present.
laca77 said:
Hello
Whitch software?
Just for test: switch off the wifi and test that your problem goes away or still present.
Click to expand...
Click to collapse
It happens several times a day, with or without a connection to WiFi (but I don't know when it will happen, so WiFi isn't off normally).
If possible try to switch off the wifi and test it.
Somehow my s8+ loosing reception all the suddenly.
phone has never been dropped.
i am loosing cellular signal all the time. no mattere where i am.
first i thought it was software problem, an did all the right things. safe mode, checking third party apps,
hard reset, an all that.
then i downgraded the room back oreo to see if it helped, no luck ;(
changing sim did NOT help either.
any suggestions? i have no warranty left on the phone as it a bit over 2 years old.
Mine is doing the same thing, even with wifi. It started after the most recent update. I have been googling, but haven't found much so I assumed that it was localized to me. I have never had connectivity issues with this phone before.
Sent from my SM-G955U using Tapatalk
I am having the exact same issue, it all happened after I updated to android 9, even if you downgrade back to 8 it doesn't fix the issue, has anyone managed to find a solution ? Like henbone11 mentioned suggested sites with fixes from Google do not work. Thanks in advance
I was thinking bad modem software? Is it possible to get a older modemsoftware onto the phone with PIE installed?
Same problem here. Have not done any mods, always accepted the official updates.
Cant make or receive calls. (sometimes can make one or two calls right after restart). I do get text message notifications about missed calls. GSM data not working (sometimes seems to work for a bit but not enough to load a page or use maps.
WiFi and Bluetooth still work for me. so I'm using the s8 with another older phone for WiFi hotspot and calling.
Have done full factory reset, uninstalled all apps aso. Nothing brings it back - phone repair shops say they haven't heard s8 having these problems.
I have the same issue.
One day after I restarted my phone, it suddenly said no network connection. I did factory reset too, didnt fix it. Changed sim cards, still error.
I downloaded a widget that was supposed to turn the cell radio on and off. Cant turn the cell radio on either
Network Connection on s8
Mihkel.ee said:
Same problem here. Have not done any mods, always accepted the official updates.
Cant make or receive calls. (sometimes can make one or two calls right after restart). I do get text message notifications about missed calls. GSM data not working (sometimes seems to work for a bit but not enough to load a page or use maps.
WiFi and Bluetooth still work for me. so I'm using the s8 with another older phone for WiFi hotspot and calling.
Have done full factory reset, uninstalled all apps aso. Nothing brings it back - phone repair shops say they haven't heard s8 having these problems.
Click to expand...
Click to collapse
Did you get any luck fixing your s8+ network problem?
no, still no network.
have done everything I can without rooting.
Tried different SIM cards and network providers - no luck.
vargens said:
Somehow my s8+ loosing reception all the suddenly.
Click to expand...
Click to collapse
Hi,
This issue is quite easy to fix. As modem performance (connectivity) is linked to model configuration. Another word for this is CSC.
It is fine to change your CSC. Download a benchmark tool to monitor your connectivity and record values and do not feel afraid to update / change your CSC.
It can take a while to find the right one for you, not it will be worth it. Don't worry.
Note: CSC changer can be easily found in XDA.
Note: a restart may be required to take the configuration into account.
Cheers
Spyrou
Hi there mate!
spyrou007 said:
Hi,
This issue is quite easy to fix. As modem performance (connectivity) is linked to model configuration. Another word for this is CSC.
It is fine to change your CSC. Download a benchmark tool to monitor your connectivity and record values and do not feel afraid to update / change your CSC.
It can take a while to find the right one for you, not it will be worth it. Don't worry.
Note: CSC changer can be easily found in XDA.
Note: a restart may be required to take the configuration into account.
Cheers
Spyrou
Click to expand...
Click to collapse
Hi.. i want to do your solution.
What benchmark tool to use? And is there a tutorial for the process?
Thank you so much for the idea.
I moved to another country and used a local sim card, worked for a couple of days and then it's suddenly no network.
IMEi still ok.
Phone still detects my number.
I've tried
resetting network setting
factory reset
Flashing latest unbranded firmware via Odin
Still no luck.
The mobile radio switch won't turn on.
Ping test fails.
Sometimes I wonder if this is a hardware issue.
spyrou007 said:
Hi,
This issue is quite easy to fix. As modem performance (connectivity) is linked to model configuration. Another word for this is CSC......
Click to expand...
Click to collapse
Why would this work? Phone worked normally before. Same country/same provider. Sometimes still connects to data network for a minute and then drops all cellular connection again.
Why would changing CSC work.
Asking because changing CSC is not easy for me and I don't see why would I need to change it if it worked perfectly before. NFC payments worked(still work) , data/voice calls worked perfectly for 2 years. Then suddenly didn't.
Hi all,
I'm facing the problem with both phones (Asus 4 Max/ZC554KL and Samsung A10s/A107F). The signal is full, shows 4G, even the arrows, BTSs all around (almost the city centre) but the data connection keeps disconnecting. As long as there's a data transfer (downloads, online radio), it works, once it stops, the connection dies too, still showing 4G/data transfer arrows though. Switching the data off/on doesn't help, the flight mode on/off has to be used to restore the connection. Doing this everytime you touch the phone is kinda....tiring, not mentioning you're getting no messages/notifications till you do it. The sim cards are both quite new (t-mobile cz and kaktus (local lowcost t-m brand)), so it shouldn't be the problem, I was thinking about the problem with contacts to the antennas in back covers as both phones were open few times (was changing the charging connectors due to the slight water damage) but wasn't able to find out if the 4G/GSM antennas are in the cover in case of these phones. The carriers keep saying all is fine from the network part. Both phones were bought new in Asia, being used in CZ now but have all local LTE bands. Asus performs a tiny bit better (in terms of reception) so I decided to dig into the software options. The factory reset didn't help and I realised the phone is still in its original state from the time I bought it (03/19) and offered me zero updates. Even now it doesn't. Tried to download it manually from the Asus website but it always says "error" during the installation and stops it. So I decided to find another way to get it in. Don't want to risk Chinese one-click apps, so I chose Magisk which should allow manual updates with no risk. The collateral problem arose, as the volume keys do not work, so I tried to put it into the recovery mode through ADB. My old computer sadly only has Windows Vista OS and keeps telling me errors whenever I try to perform any ADB commands. Therefore I'm asking you here for help with the following questions:
1. is there any software allowing to put ZC554KL into the recovery mode through Windows Vista?
2. if not, any other way to push any actual ROM version into it? (There's still 7.1.1 from the factory).
3. if not, any other way to get there Magisk?
4. if not, any safe rooting app, not requiring the recovery mode? (Well, I don't need to get controlled by the Chinese comrades)
5. overall, any other possibilities to solve this data problem/keep the data connection working? (I could leave the online radio on (silently) but the battery gets drained quickly and I won't have unlimited data forever )
6. anyone knows where the LTE/WiFi antennas are in these two phones? As Asus has better 4G but significantly worse WiFi reception.
I've heard you're the #1 experts here, so hopefully we'll be able to solve this. If there's any information missing in the problem description, I'm ready to provide it.
Thanks a lot for any help