For the last two or three days, my RN3 has only been connecting to 2G networks. I understand there can be issues with this in SIM2 slot (which I experienced last week), whereas SIM1 should work fine.
Anyway, after moving the sim card from SIM2 to SIM1 last week, I enjoyed 3G networks for a few days, but now it's been on 2G only. I've tried several reboots in the meantime, and the phone was off and on as well, nothing helped. Is there any known way to resolve this? I'm running latest stable CM13 (and the only other issue since day one has been no front cam).
Did you tried a factory reset?First make a back-up,because this procedure will delete all data and apps from your internal partition.
Have checked your sim card in other phone to see if it does persist connection issue?How is signal metter in your area?
For the last two or three days, my RN3 has only been connecting to 2G networks. I understand there can be issues with this in SIM2 slot (which I experienced last week), whereas SIM1 should work fine.
Anyway, after moving the sim card from SIM2 to SIM1 last week, I enjoyed 3G networks for a few days, but now it's been on 2G only. I've tried several reboots in the meantime, and the phone was off and on as well, nothing helped. Is there any known way to resolve this? I'm running latest stable CM13 (and the only other issue since day one has been no front cam).[/QUOTE]
For me, what worked was not flashing the recommended CM13 firmware. From MIUI, just flash the recovery, then CM, Gapps, done.
I get 3G now, fingerprint etc all work fine. This isn't supported by the devs but it works for me, so...
For the record, I was on the MIUI 8 Global Dev ROM when I flashed this.
@Luiggi79 - No, but I'm about to do it (and also try some other things) this weekend if I have time.
@NSDCars5 - Did you unlock "officially"? I have the "permit" to do it now, but I have to put everything back to "factory" state first (just not sure at this moment if the global ROM, which was there when I bought it, now supports official bootloader unlock or not - I believe it used to only work on Chinese MIUI ROM).
@Luiggi79 - No, but I'm about to do it (and also try some other things) this weekend if I have time.
@NSDCars5 - Did you unlock "officially"? I have the "permit" to do it now, but I have to put everything back to "factory" state first (just not sure at this moment if the global ROM, which was there when I bought it, now supports official bootloader unlock or not - I believe it used to only work on Chinese MIUI ROM).
I haven't unlocked my device bis yet because i don't need it.I saw somewhere on MIUI website that the unlocking process have nothing to do with the ROM version:global,china or developer.
Which ROM do you have installed on the device?If you have custom ROM and custom recovery image do a search for guides,to revert all "things"to factory state.Be careful if you are on custom rom,because you need to do some procedures before MIUI original ROM install;otherwise you will get a bricked device.Search and read before any action
galadroid said:
@Luiggi79 - No, but I'm about to do it (and also try some other things) this weekend if I have time.
@NSDCars5 - Did you unlock "officially"? I have the "permit" to do it now, but I have to put everything back to "factory" state first (just not sure at this moment if the global ROM, which was there when I bought it, now supports official bootloader unlock or not - I believe it used to only work on Chinese MIUI ROM).
Click to expand...
Click to collapse
galadroid said:
@Luiggi79 - No, but I'm about to do it (and also try some other things) this weekend if I have time.
@NSDCars5 - Did you unlock "officially"? I have the "permit" to do it now, but I have to put everything back to "factory" state first (just not sure at this moment if the global ROM, which was there when I bought it, now supports official bootloader unlock or not - I believe it used to only work on Chinese MIUI ROM).
Click to expand...
Click to collapse
Yep, I unlocked officially. Unlock definitely works on Global ROMs too, I unlocked mine on Global Developer.
Well, after wiping it and flashing Santhosh CM and official CM13 - 3G worked on both. (Also, front cam works in Santhosh CM, but not in the official CM13.)
It would be great to know what the reason for 2G was... the manual network scan then only displayed 2G and 4G networks from all available operators, but no 3G anywhere. I hope Privacy Guard or AfWall weren't interfering there.
Related
Hi,
TL;DR version below.
Note: This is just a traceback that may help diagnose the problem.
I "own" an Ace (S5830M, everything from i/C works fine). I was playing around with some custom ROMs and evertything was going pretty fine. I installed Jelly Blast (OTA 3) and flashed back to stock a few times, everything was fine and working. Used the recovery/backup functionality from CWM (5.0) to switch between the mentioned installations and it was all good.
Here start the real problem:
During one of the instalation of the custom ROM i went to Advanced -> Format /system (Because probably I miss read the instructions). After this the phone booted and didn't bootlooped, instead it just showed the initial logo (white letters, phone model. Not Samsung animation). As I noted it was stuck I flashed stock from Odin and got it working back.
Everything is fine, the phone works as intended, exept that it "can't" use the baseband I was using before (850 MHz frequency, 3G). I say "can't" because after n tries I was able to send 1 SMS, and only one. All the others failed. And on really unusual occasions I get signal and the phone tells me the provider (Kolbi/ICE) but after a few seconds it loses the connection/signal.
What I've tried so far:
Go to Settings->Wireless Connections->Movile Networks:
There I tried to choose my carrier, but isn't listed 99% the time. The other two are(Claro/movistar). So I set it to automatic.
Check IMEI:
It is the right one
Try to restore from a previous working state with CWM:
I can't it says that there's a MD5 missmatch. (Can I force it?)
Flash a Modem file that is known to work (With another, same model, phone and carrier)
Same sympthoms: does not work.
Dial *#197328640# and play with the settings:
Here I setted to: Type: DUAL_MODE_UMTS_PREF
Band: AUTO
These are the same settings that the working phone.
Flash the stock carrier-branded firmware.
Without luck so far.
====================================================
TL;DR
I have two phones, same model and same carrier. One does not detect the 850MHz band (3G to GMS) so I get no service 99.99% the time, but I was able to send a single SMS. All this after formating /system via CWM.
I've tried to use the same setup and setting from the working phone without success.
Any help or hint would be greatly appreciated.
Footnote: English is not my native language, please understand if I confused some of the tech terms even if IT is my field.
niant said:
Hi,
TL;DR version below.
Note: This is just a traceback that may help diagnose the problem.
I "own" an Ace (S5830M, everything from i/C works fine). I was playing around with some custom ROMs and evertything was going pretty fine. I installed Jelly Blast (OTA 3) and flashed back to stock a few times, everything was fine and working. Used the recovery/backup functionality from CWM (5.0) to switch between the mentioned installations and it was all good.
Here start the real problem:
During one of the instalation of the custom ROM i went to Advanced -> Format /system (Because probably I miss read the instructions). After this the phone booted and didn't bootlooped, instead it just showed the initial logo (white letters, phone model. Not Samsung animation). As I noted it was stuck I flashed stock from Odin and got it working back.
Everything is fine, the phone works as intended, exept that it "can't" use the baseband I was using before (850 MHz frequency, 3G). I say "can't" because after n tries I was able to send 1 SMS, and only one. All the others failed. And on really unusual occasions I get signal and the phone tells me the provider (Kolbi/ICE) but after a few seconds it loses the connection/signal.
What I've tried so far:
Go to Settings->Wireless Connections->Movile Networks:
There I tried to choose my carrier, but isn't listed 99% the time. The other two are(Claro/movistar). So I set it to automatic.
Check IMEI:
It is the right one
Try to restore from a previous working state with CWM:
I can't it says that there's a MD5 missmatch. (Can I force it?)
Flash a Modem file that is known to work (With another, same model, phone and carrier)
Same sympthoms: does not work.
Dial *#197328640# and play with the settings:
Here I setted to: Type: DUAL_MODE_UMTS_PREF
Band: AUTO
These are the same settings that the working phone.
Flash the stock carrier-branded firmware.
Without luck so far.
====================================================
TL;DR
I have two phones, same model and same carrier. One does not detect the 850MHz band (3G to GMS) so I get no service 99.99% the time, but I was able to send a single SMS. All this after formating /system via CWM.
I've tried to use the same setup and setting from the working phone without success.
Any help or hint would be greatly appreciated.
Footnote: English is not my native language, please understand if I confused some of the tech terms even if IT is my field.
Click to expand...
Click to collapse
Flash a new rom and kernel
Rahul4Ace said:
Flash a new rom and kernel
Click to expand...
Click to collapse
Yeah, that could fix it. BTW, was there any need to quote the whole OP?
First upon there are few senior guys in here who hates noobs questions, to them " Don't forget you too where a nobiee in the beginning."
NOw my story!!
2 weaks before I brought one unlocked E970 from my friend, which runs CM11 nightly 13. The first thing I did was updating to 14 which was just released. The phone had little heating problems and gps fixing issue, also terrible battery backup due to wake locks.
So I flashed the cm 10.2 stable and found all issues fixed except the phone fails not register in 900mhz 2G networks in India (I mean weak signal in 900mhz, where other carriers like DOCOMO which works on 1800mhz are works just fine).
After reading a lot I decided to flash on nexus 4 radio (.54),but there is no hope.
Then I flash back the stock ATT_JB radio and find the network problem is resolved have all frequencies (900/1800mhz gsm) and carriers listed, but my sim is not recognizing.
Ok good, I start flashing almost every radio up there
E970,e971,e973,e977 - all gives the No sim error. ( even on LS970) ( surprisingly the all shows the same baseband also)
but all the nexus 4 radios did works, but terrible signal in GSM 900mhz. ( also experience few problems in .84 and above)
Guys I even flashed on E980 modem and find the network and SIM works amazing but no audio, speaker and demigod crash. Which can be understood since e980 is snapdragon 600 SOC.
OK I must have broke some thing lets go to the beginning, so I did the LGNPST and return my phone to 4.1.2 stock att&t.
results -- Stock rom and stock rado
problems-- not even network scan is working( error in scanning network), and of curse no SIM!!!
That's it> I rooted my phone by using freegee unlocked my boot loader and install CWM. Then flashed back the CM11 and nexus radio. Atleast the phone is working expect the volume keys are inverted.
I may have broke the EFS, but I have IMEI number and phone working in N4 modem. So the issue is with the ATT radio which may be some RIL issue I guess.
In order to get my phone useful, either I have to make the ATT radio accpet my SIM or some have edit the nexus4 radio and make it give a good signal in gsm 900mhz. Also the inverted volume keys are awkward.
To be honest I have no idea what to do next, but I strongly feels its a software error and can be fixed, BUT HOW?
harirajrin said:
First upon there are few senior guys in here who hates noobs questions, to them " Don't forget you too where a nobiee in the beginning."
NOw my story!!
2 weaks before I brought one unlocked E970 from my friend, which runs CM11 nightly 13. The first thing I did was updating to 14 which was just released. The phone had little heating problems and gps fixing issue, also terrible battery backup due to wake locks.
So I flashed the cm 10.2 stable and found all issues fixed except the phone fails not register in 900mhz 2G networks in India (I mean weak signal in 900mhz, where other carriers like DOCOMO which works on 1800mhz are works just fine).
After reading a lot I decided to flash on nexus 4 radio (.54),but there is no hope.
Then I flash back the stock ATT_JB radio and find the network problem is resolved have all frequencies (900/1800mhz gsm) and carriers listed, but my sim is not recognizing.
Ok good, I start flashing almost every radio up there
E970,e971,e973,e977 - all gives the No sim error. ( even on LS970) ( surprisingly the all shows the same baseband also)
but all the nexus 4 radios did works, but terrible signal in GSM 900mhz. ( also experience few problems in .84 and above)
Guys I even flashed on E980 modem and find the network and SIM works amazing but no audio, speaker and demigod crash. Which can be understood since e980 is snapdragon 600 SOC.
OK I must have broke some thing lets go to the beginning, so I did the LGNPST and return my phone to 4.1.2 stock att&t.
results -- Stock rom and stock rado
problems-- not even network scan is working( error in scanning network), and of curse no SIM!!!
That's it> I rooted my phone by using freegee unlocked my boot loader and install CWM. Then flashed back the CM11 and nexus radio. Atleast the phone is working expect the volume keys are inverted.
I may have broke the EFS, but I have IMEI number and phone working in N4 modem. So the issue is with the ATT radio which may be some RIL issue I guess.
In order to get my phone useful, either I have to make the ATT radio accpet my SIM or some have edit the nexus4 radio and make it give a good signal in gsm 900mhz. Also the inverted volume keys are awkward.
To be honest I have no idea what to do next, but I strongly feels its a software error and can be fixed, BUT HOW?
Click to expand...
Click to collapse
you done lots of wrong things with your phone for minor network issue.
First flash Stock LGNPST to make your phone usable. And then use it for about a day. sometimes due to low signal it doesn't network.
If still doesn't work then flash EFS and Stock ATT JB modem and then try to use it.
or ask your friend if he gave you and unlocked phone or locked one or he might have bricked modem just like you are trying todo.
Flashing files for diff in your phone makes things worse and might give you Hard brick. so never flash anything of other phones. NEVER.
Your best bet is to use stock rom for a while to make things normal or else you might hard brick your phone and also if you are buying phone from someone else then first check it if everything works or not.
I DID TRIED lgnpst
ShoaibAhmed said:
you done lots of wrong things with your phone for minor network issue.
First flash Stock LGNPST to make your phone usable. And then use it for about a day. sometimes due to low signal it doesn't network.
If still doesn't work then flash EFS and Stock ATT JB modem and then try to use it.
or ask your friend if he gave you and unlocked phone or locked one or he might have bricked modem just like you are trying todo.
Flashing files for diff in your phone makes things worse and might give you Hard brick. so never flash anything of other phones. NEVER.
Your best bet is to use stock rom for a while to make things normal or else you might hard brick your phone and also if you are buying phone from someone else then first check it if everything works or not.
Click to expand...
Click to collapse
I did tried the stock and the modem flashes.. finally I sold it .
Anyone have the issue where the SIM card isn't recognized? I'm on the RR newest ROM and the card isn't being recognized...I'm about to try the stock ROM and see how that goes.
Similar problem
I`m in a similar position I think. However, my phone recognizes the SIM but when checking the SIM-status the mobile radio seems to be off. I can´t change preferred network type, it just jumps back to "TD-SCDMA/GSM/WCDMA/LTE , I get no results when searching for mobile networks and when I use the *#*#4636#*#* - menu the "Turn on radio"-option wont respond. I`m on latest stock firmware and the phone is still displaying IMEI-numbers. I bought my unlocked European version of Oneplus X yesterday on an auction site, the seller has good reputation and he claims that it worked fine for him. I got a new SIM-card today thinking that would have solved the problem, no luck there however. I also did a hard reset and downgraded to an earlier version of a stock firmware and the error is still there. I noticed I had TWRP v.2.8.7.0 blu_spark r5 preinstalled when I bought it, its a custom kernel right? Could something related to the kernel be the root of the problem or the baseband? Any suggestions on what to do next?
My phone's SIM card is not working as expected:
- it is recognized (The phone asks me for the password when he detects the SIM card and code is accepted)
- it says "No service" and of course, I do not get any services (no phone calls, SMS or data)
My history on this device so far (in case it matters):
- This SIM card worked when I received the phone from gearbest (and I upgraded to latest MIUI 8.0.5) and I could make a test call and send/receive SMS.
- Then I wanted to install CM13, I had to go to the unlocking procedure that didn't work as expected and required me to install Global Dev Roms (and this didn't work as expected) so I finished by flashing nearly all of the ROMs (Global, Global dev, China, china dev) using EDL mode. Quite quickly I notice that I lost functionalities upon the simcard : on some ROMs it would not even been seen (no sim card displayed, nor Wifi).
- I had to resort to a bootloader hack to reach unlocked state because official way did not work at all (blocked at 50%). And got on my way to install CM13... most ROMs would have the exact same problem than the official images: no sim card detected (and no Wifi neither BTW).
- It is only on the very latest ROMs for kenzo CM13, (> 2016-10) that I got back Wifi and sim card detection. Unfortunately, the sim card is still in Emergency mode and states "No Service"
- I flashed many NON-HLOS.bin with TWRP without seeing any changes (7.1.7 and 7.1.8 for the latest), but would be happy to get a link to the latest ones to continue trying.
- flashing the radio.zip mentionned in many comments breaks back to the "no Wifi and no SIM card detected" state, hopefully re-flashing NON-HLOS.bin 7.1.8 has re-enable previous better but incomplete state.
More raw info:
- the sim card is valid: it works in another phone straight away
- the antenna cable seems securely fastened (I opened the phone just to check this)
- I still have an IMEI when dialing *#06#, and it matches the number written on the sticker inside the phone.
- it behaves strangely when using the test interface *#*#4636#*#* : no network is displayed, has network type of "LTE/GSM auto (PRL)" that I can't change despite the many other choices listed in the menu. I can't also turn on radio signal.
Any help/suggestions to get back my 3G/4G SIM card services ?
==== THE ANSWER ===
Thanks to @corkiejp:
I don't have Kenzo (Standard Chinese Redmi Note 3 Pro) architecture but Kate (International Redmi Note 3 Special Edition).
How to check your version.
I needed only to flash the correct KATE radio firmware to sort it out.
Flash correct fastboot rom for your device again
@vaab69 Are you sure you have the "Kenzo" version? Maybe you got the "Kate" model and are flashing the wrong roms for your device.
Telling the Redmi Note 3 Pro (Kenzo) and Special Edition (Kate) apart!
redminote3 said:
Flash correct fastboot rom for your device again
Click to expand...
Click to collapse
Can you be more precise ? What is "correct" fastboot rom ? I have many of them, and already flashed all of the official ones (stables and dev, global and chinese, MIUI) and that didn't bring my SIM services back.
corkiejp said:
@vaab69 Are you sure you have the "Kenzo" version? Maybe you got the "Kate" model and are flashing the wrong roms for your device.
Telling the Redmi Note 3 Pro (Kenzo) and Special Edition (Kate) apart!
Click to expand...
Click to collapse
Wow, thanks, this was it ! I spent a lot of time on this skimming through many places. Dunno how I have not came across this !
I just applied the kate radios, and Tada ! it worked.
More info BTW for any other guy stumbling on this thread and wanting to get straight with KATE:
http://mikestechlife.blogspot.fr/2016/10/installing-cm13-on-xiaomi-redmi-note-3.html
Is there any special things to do on the thread to mark it resolved, or to thank you ?
@vaab69 You could edit your original post in advance mode and Include "[Resolved]" in the title.
Hi, I downloaded and installed Lineage ROM, everything was working fine but I found that I was not able to send text messages (receiving messages was okay), I tried change values under test menu (*#*#4636#*#*) but problem persist.
I tried clean installation of new ROM (Aosp).
I tried install new firmware from:
https://forum.xda-developers.com/re.../firmware-xiaomi-redmi-note-5-5-plus-t3759683
And baseband from :
https://androidfilehost.com/?fid=746163614322262750
And finally, text messages are OK, unfortunately I am not able connect to 4G/ LTE networks now. Only 2G and 3G networks are working. LTE services were working without problem on original Miui and Lineage ROM.
Can someone try help me how solve it ? I would really appreciate any ideas.
Do you think this can help?
https://androidfilebox.com/app/redmi-5-plus-modem-firmware/
Thanks in advance and happy weekend
i have the same question! +1
I tried fresh install original MIUI ROM, but it did not help
http://en.miui.com/getrom-340.html?m=yes&mobile=2 .
LTE is not available still.
I did not try this method still: https://androidfilebox.com/app/redmi-5-plus-modem-firmware/
But I don't have another option I guess.
With LTE no Problems = https://forum.xda-developers.com/redmi-note-5/development/rom-omnirom-t3823189
Unfortunately LTE is not working on this ROM (Omni) for me too, but I expected it, because as I wrote I tried original MIUI as well. It's problem of wrong firmware, baseband, modem or something, because hard reset or flashing new rom don't fix it. Btw, this morning I was in big city in my country and my phone was able connect to LTE, but it was 1800 or 2100 MHz, which are available only in bigger cities. When I came back to home, it showing only H+ again. It seems my phone is not able to connect only to LTE on 800 MHz (B20) currently, which is most widespread LTE frequency in my country and this one is only available one in my location. And I was able connect to this network before. Unfortunately I don't know how I can bring it back.
Solved.
My friend share her .xqcn file with me (she has same phone) so I flashed modem file via QPST Flash Tool to my device. Xiaomi started receiving LTE in my location- B20 frequency band, unfortunatelly it was continuously connecting and disconnecting between "no signal" and 4G.
The next step was flash MIUI 10 Global Beta ROM 8.8.9 to my phone via Miflash. LTE seems be stable and fully working now.