Hi, I've 6/64 x821 Le max 2. It starts with indian vendor cripted rom. I've unlocked and now I've Revenge os 9.0
I tried everything to increase Signal but nothing worked.
Signal drop every 10 seconds. 4G/H+ has X symbol almost always. Even if I've 4G max Signal It not connects to internet almost always. When I make a call I've to recall 2-3 times because It not calls.
Tried: (APN, change carriers, change rom, turn to stock, change modem, change firmware, unlock bands with Qualcomm, qfil restore, reset modem etc...). I need help It is very frustrating, thanks.
mediih said:
Hi, I've 6/64 x821 Le max 2. It starts with indian vendor cripted rom. I've unlocked and now I've Revenge os 9.0
I tried everything to increase Signal but nothing worked.
Signal drop every 10 seconds. 4G/H+ has X symbol almost always. Even if I've 4G max Signal It not connects to internet almost always. When I make a call I've to recall 2-3 times because It not calls.
Tried: (APN, change carriers, change rom, turn to stock, change modem, change firmware, unlock bands with Qualcomm, qfil restore, reset modem etc...). I need help It is very frustrating, thanks.
Click to expand...
Click to collapse
format phone,then flash lineage 16 +gapps nano pie .this maybe will help you bypassing this.
mediih said:
Hi, I've 6/64 x821 Le max 2. It starts with indian vendor cripted rom. I've unlocked and now I've Revenge os 9.0
I tried everything to increase Signal but nothing worked.
Signal drop every 10 seconds. 4G/H+ has X symbol almost always. Even if I've 4G max Signal It not connects to internet almost always. When I make a call I've to recall 2-3 times because It not calls.
Tried: (APN, change carriers, change rom, turn to stock, change modem, change firmware, unlock bands with Qualcomm, qfil restore, reset modem etc...). I need help It is very frustrating, thanks.
Click to expand...
Click to collapse
had the same issue
flashing 466 modem fixed it for jio sim
but airtel was tower coverage problem
Related
So by a stupid mistake I have selected in *#*#4636#*#* the Radio Band to USA. The signal suddenly dropped and it stopped working at all, the nework does not connect except in 4G and only for data. Calls and text are not working, only 4G data works fine. This is on the sim1 though. On sim2 all is ok (except that with the X829 ROM, on sim2 I have no data, and on sim1 I have no calls )) ). I was on sim1 when I've changed the Radio Band, so I guess that only this one got affected since sim2 is working properly.
Is there any Radio Band files that I can restore? Or some app that can restore the settings of the modem?
Any help is highly appreciated.
PS: Reinstalling the ROM (clean or dirty) doesn't help. Factory resetting also doesn't help. I would downgrade to 014s but I'm afraid not to end up with a brick.
Change the rom
valy_cta said:
So by a stupid mistake I have selected in *#*#4636#*#* the Radio Band to USA. The signal suddenly dropped and it stopped working at all, the nework does not connect except in 4G and only for data. Calls and text are not working, only 4G data works fine. This is on the sim1 though. On sim2 all is ok (except that with the X829 ROM, on sim2 I have no data, and on sim1 I have no calls )) ). I was on sim1 when I've changed the Radio Band, so I guess that only this one got affected since sim2 is working properly.
Is there any Radio Band files that I can restore? Or some app that can restore the settings of the modem?
Any help is highly appreciated.
PS: Reinstalling the ROM (clean or dirty) doesn't help. Factory resetting also doesn't help. I would downgrade to 014s but I'm afraid not to end up with a brick.
Click to expand...
Click to collapse
If i were you. I would change the rom from china to indian rom. It would help you. The radio band of chinese rom and the indian rom is different. It would replace the radio band of chinese rom and if it doesn't work. Then return to the chinese rom
I'm 100% sure it would help you.
valy_cta said:
So by a stupid mistake I have selected in *#*#4636#*#* the Radio Band to USA. The signal suddenly dropped and it stopped working at all, the nework does not connect except in 4G and only for data. Calls and text are not working, only 4G data works fine. This is on the sim1 though. On sim2 all is ok (except that with the X829 ROM, on sim2 I have no data, and on sim1 I have no calls )) ). I was on sim1 when I've changed the Radio Band, so I guess that only this one got affected since sim2 is working properly.
Is there any Radio Band files that I can restore? Or some app that can restore the settings of the modem?
Any help is highly appreciated.
PS: Reinstalling the ROM (clean or dirty) doesn't help. Factory resetting also doesn't help. I would downgrade to 014s but I'm afraid not to end up with a brick.
Click to expand...
Click to collapse
I did the same thing by my mistake.And my le max 2 also became not able to connect internet. In my case, it can't connect both 4G and 3G .
But I fixed it. But I don't know that it get back to the original completely.
I'm japanese.And I'm sorry for that my English skil is very poor.
My current rom is Le2_X820-MAX_ROW-5.8.015S_V29_CUOCO92.
I used DFS CDMA TOOL and checked the items on the "Band Preferred" same as "RF BC Config".
1. download HTC Diag Driver. You have to customize .inf file later.
2. conect device to your windows pc and choose MTP and USB Debugging.
3. enter the follows command.
"adb shell"
"su"
"setprop sys.usb.config diag,adb"
When you enter this command, your device change over diag mode.
4. diag driver install.
You have to find hardwawer ID from device manager.
And replace the hardware ID in .inf file.
5. If you install diag driver correctly, you will be able to use DFS CDMA TOOL.
sorry, I can't explain any more..English is difficult...
I bought my phone from china and I'm in US, and it works perfect on stock with LTE enabled for AT&T by default. Might I ask why did you change it to US band and it stopped working? It would still work right?
Ootp said:
If i were you. I would change the rom from china to indian rom. It would help you. The radio band of chinese rom and the indian rom is different. It would replace the radio band of chinese rom and if it doesn't work. Then return to the chinese rom
I'm 100% sure it would help you.
Click to expand...
Click to collapse
Many thanks for the advice but it didn't help. I had installed the indian rom and then to the chinese without any change in the behavior of the modem. I'll try the chatmonchy's advice to see if there will be any improvement.
xterminater07 said:
I bought my phone from china and I'm in US, and it works perfect on stock with LTE enabled for AT&T by default. Might I ask why did you change it to US band and it stopped working? It would still work right?
Click to expand...
Click to collapse
Actually I'm in Europe and looks like we use slightly different bands (??). I get 4G data but without calls. To other networks like 2G and 3G it connects sometimes but it's for few seconds only. I even don't remember what made me change the bands to USA, I guess I was curios what settings those were. The options are "USA band" and "Band 6", neither one is working well for my device. And strangely though, there is no other option to go back like "Auto" or something. It seems that I'm not the only one that did it. After a google search, it turned out that a lot of people had the same issue. For some, the factory reset helped, for others was flashing via TWRP the radio bands again.
I had solved the issue and I will post a guide later on for those who want to unlock additional bands or did the same mistake as I did.
Thanks for the help guys.
valy_cta said:
I had solved the issue and I will post a guide later on for those who want to unlock additional bands or did the same mistake as I did.
Thanks for the help guys.
Click to expand...
Click to collapse
That's good!!
I'm looking forward to your guide about unlock additional bands.
thread: [SOLVED] Accidentally changed the Radio Band to USA
Hi, gyus
I had the same problem, i select USA band and everything went wrong,
The simplest way for me was:
installing "X820 LeMax2 RevolutioN_Team Resurrection Remix", no other from TeamSpain, only Resurrection Remix
http://revolutionlemax2.blogspot.al/
https://mega.nz/#!T9o0wAhJ!iLa9mrPAr...VkCg3_L-q2RgnA
then after installation, go in dialer and call *#*#4636#*#*.
There are three band: Automaic, USA, and EURO.
I select the EURO and everything i'ts OK.
BEFORE DO ACTIONS DON'T FORGET TO BACKUP ALL THE ROM WHERE YOU ARE WITH TWRP
readion said:
Hi, gyus
I had the same problem, i select USA band and everything went wrong,
The simplest way for me was:
installing "X820 LeMax2 RevolutioN_Team Resurrection Remix", no other from TeamSpain, only Resurrection Remix
http://revolutionlemax2.blogspot.al/
https://mega.nz/#!T9o0wAhJ!iLa9mrPAr...VkCg3_L-q2RgnA
then after installation, go in dialer and call *#*#4636#*#*.
There are three band: Automaic, USA, and EURO.
I select the EURO and everything i'ts OK.
BEFORE DO ACTIONS DON'T FORGET TO BACKUP ALL THE ROM WHERE YOU ARE WITH TWRP
Click to expand...
Click to collapse
Hi, how to install this ROM? Which TRWP I need? I install with official TWRP, but bootlop after instalation.
Try this link for recovery by GrossoShop Couco92
https://www.androidfilehost.com/?w=files&flid=57913
---------- Post added at 02:35 PM ---------- Previous post was at 02:33 PM ----------
karellang said:
Hi, how to install this ROM? Which TRWP I need? I install with official TWRP, but bootlop after instalation.
Click to expand...
Click to collapse
Try this link for recovery by GrossoShop Couco92
https://www.androidfilehost.com/?w=files&flid=57913
Does not help. If I go to servise menu (dial *#*#4636#*#*) , I see Radio turned OFF and I can´t change it. How to solve this ?
Did you post any guide how you solved the issue?
Unfortunately USA band selected
Hi,
I live in India. I bought Oppo F3 Plus (CPH1613) 4Gb Ram, 64GB Storage, Qualcomm MSM8976 Pro Snapdragon 653 a year ago and was working too much fine. I was wondering about Qualcomm mobile secret codes and found this *#*#4636#*#* . I dialed this and accidentally changed radio band to USA band and suddnly on instant my mobile didn't get any network signal. From then, I went for Oppo care, and mobile repairing shops and self tried and tested for lots of time; but everyone unable to bring phone to normal. I reset my mobile, flashed stock rom for countless times, wiped all data but nothing helped me out. Finally i rooted my oppo f3 plus and tried to boot in fastboot mode; but Oppo removed bootloader and fastboot mode from 2016 (as posted in XDA). I got a little link about resetting USA band to automate and is erasing modemst1 and modemst2. But again it have to be performed from fastboot.
Help me out for my mobile.
You can flash a modem file, it will reset it as well. Changing the ROM won't update the modem configuration. Try to search modem files and flash them via TWRP.
Hi!
My phone is Redmi Note 3 SD, Kate version.
I've been using cm14 for a few months and then decided to flash nitrogen os. After flashing I can't call or receive calls from anybody, since my phone can only connect to LTE, but not 2g or 3g, and my network operator doesn't support VoLTE. I can still use data connection on LTE and send/receive text messages. My phone also connects to my Wifi network. When I select 2g only, 3g only or 2g/3g in settings I get no signal at all. My sim card and carrier (while connected to LTE only) are being detected, I have the correct IMEI. I've tried flashing MIUI through fastboot, flashing CM13, CM14 and flashing different kate firmwares on every rom. Does anybody know what to do?
I solved the issue by installing Network Guru and selected WCDMA in RAT locking menu. Then i selected clear forcings and the problem was gone.
sheo said:
I solved the issue by installing Network Guru and selected WCDMA in RAT locking menu. Then i selected clear forcings and the problem was gone.
Click to expand...
Click to collapse
I have the same exact problem, but on a Kenzo.. I don't have 2g/3g in Nitrogen OS, Xenon HD or Lineage os... but I have them on any miui ROM (official global dev/stable and xiaomi.eu)
But the strange thing is that I've been using Xenon HD and the Nitrogen OS for months without any problem... Before I try your solution, can you confirm your solution applies to the same problem?
TIA,
Gustavo Melo
I didn't have 2g or 3g on MIUI roms too. I recommend you to try it, you've got nothing to lose
You need root though.
---------- Post added at 12:58 AM ---------- Previous post was at 12:41 AM ----------
sheo said:
I didn't have 2g or 3g on MIUI roms too. I recommend you to try it, you've got nothing to lose
You need root though.
Click to expand...
Click to collapse
Well... I don't know what to say... I tried the app still on miui (xiaomi.eu), and did what you described (even if the problem didin't exist on MIUI)... Then installed Nitrogen OS and... I have 2g/3g!... the only difference on this install is that I activated the phone without the SIM...
One of the two: or the Network guru app I used on miui persisted even after installing Nitorigen, or activating without SIM did the trick...
Thank you either way!
Eject your simcard
*#*#4636#*#*
And choose LTE,wcdma,gsm auto
Sent from my Redmi Note 3 using XDA-Developers Legacy app
sheo said:
I solved the issue by installing Network Guru and selected WCDMA in RAT locking menu. Then i selected clear forcings and the problem was gone.
Click to expand...
Click to collapse
Oh my God thank you! I finally have connection on H and 3g.
I am facing same problem on poco x3 nfc from last 4 days , during 1.5 years it was working perfect
please give me the solution and tell me is it completely software problem or it might be hardware problem??
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.
Hello! I have an ATT version.
I was having trouble updating to android pie because I'm out of the states so I was using Firmware.science; at one point I decided to jump and flash the BJ5 with odin, the flashing was taking forever, at one point it seemed like it was stucked so I decided to only flash the AP file, I worked, then afterwards I decided to flash the BL, CP and CSC Files. I flashed all 4 files for the android pie build.
My problem is that ever since I updated to pie, I never have full bars of signal, the last one is never filled. I tried with another sim card from another carrier and the problem remains. I updated from the first build to the february build to the march build today and the problem persists. I can take calls, make calls, my mobile internet, I'm not so sure, It's been a little slow. I don't know if this is a bug? I'm thinking about downgrading to oreo, I'm not sure if this is possible, is anyone else having the same issue?
Edit: I tried wiping cache, (with every update the phone factory resets so there's no point for a factory reset), taking my sim card in and out but the issue persists. I don't know what to do.
Pigoath said:
Hello! I have an ATT version.
I was having trouble updating to android pie because I'm out of the states so I was using Firmware.science; at one point I decided to jump and flash the BJ5 with odin, the flashing was taking forever, at one point it seemed like it was stucked so I decided to only flash the AP file, I worked, then afterwards I decided to flash the BL, CP and CSC Files. I flashed all 4 files for the android pie build.
My problem is that ever since I updated to pie, I never have full bars of signal, the last one is never filled. I tried with another sim card from another carrier and the problem remains. I updated from the first build to the february build to the march build today and the problem persists. I can take calls, make calls, my mobile internet, I'm not so sure, It's been a little slow. I don't know if this is a bug? I'm thinking about downgrading to oreo, I'm not sure if this is possible, is anyone else having the same issue?
Edit: I tried wiping cache, (with every update the phone factory resets so there's no point for a factory reset), taking my sim card in and out but the issue persists. I don't know what to do.
Click to expand...
Click to collapse
I would just flash the home tar in AP. Uncheck Auto reboot. after the flash is complete ,use button combo to access recovery. Then it will update your firmware for you
I'll give it a try but this reception issue is getting annoying.
If you get almost full bars (all but the very last one at the top end) that is still pretty good. If your having issues you can try factory data resetting the phone or else call AT&T and see if there is an issue in the area.
Truth be told the bars are just a convenient visual aid. If anything you should look at the signal strength.
Under settings > about phone > sim card status is an entry called signal strength. If I recall correctly somewhere around 105 to 115 dBm is pretty good. Mine is at that range (108 to 110 dBm) with tmobile and I have almost full bars (very top one is not lit).
Also if your baseband version contains the number 4 (start at the end as first character and count 5 characters to the left) then you will not be able to downgrade to oreo. The 5th character from the end (counting inwards) is the bootloader version. You can only flash firmware with the same bootloader version or higher. Attempts to flash a bootloader version lower then what is on your phone now will always fail.
scottusa2008 said:
If you get almost full bars (all but the very last one at the top end) that is still pretty good. If your having issues you can try factory data resetting the phone or else call AT&T and see if there is an issue in the area.
Truth be told the bars are just a convenient visual aid. If anything you should look at the signal strength.
Under settings > about phone > sim card status is an entry called signal strength. If I recall correctly somewhere around 105 to 115 dBm is pretty good. Mine is at that range (108 to 110 dBm) with tmobile and I have almost full bars (very top one is not lit).
Also if your baseband version contains the number 4 (start at the end as first character and count 5 characters to the left) then you will not be able to downgrade to oreo. The 5th character from the end (counting inwards) is the bootloader version. You can only flash firmware with the same bootloader version or higher. Attempts to flash a bootloader version lower then what is on your phone now will always fail.
Click to expand...
Click to collapse
Well, I'm screwed then because I do have the number 4 and the last number is a 7. I'm on the march update, I might take it to Samsung so that they can check it out. I'll try to reflash with Odin.
I have been Network Signal Guru on several different mobile with no Issue. However, on Realme GT 2 Pro with A12 V21 RU ROM, when I pressed "Clear All forcings" both SIMs signal completely down. So I tried restarting. Even after restart, No network came on boot. However, after approx 10 minutes, Network came on both SIMs.
So, basically, I have to wait for 10 minutes for network to show on every reboot.
I have tried clearing Network settings from Settings, and, flashing same Full OTA through local Update , and , Full data wipe through recovery, and updating to A13 C12 Full OTA. Still no benefit. Network appear after 10 minutes on reboot . App developer is saying that OPPO devices are different, and could not give any solution.
Please provide any solution.