Radio Off No Signal SIM - Redmi Note 8 Pro Questions & Answers

Hi! Today after i restarted my phone, i saw that i dont have signal anymore. My sim its detected but i dont have signal. In phone info radio is enabled and voice service its ok but data service is disconnected. What can i do?

Have you tried turning airplane mode on and off?

Fytdyh said:
Have you tried turning airplane mode on and off?
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Click to collapse
yes. i truned on airplane mode i restarted my phone and turned it off.

SonixSoniccc said:
yes. i truned on airplane mode i restarted my phone and turned it off.
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Click to collapse
i solved the problem i just reinstalled the rom

Related

Going from 4G connection to WIFI requires reboot

Good afternoon,
I read in another thread on here that there are a few that have experience this and one mentioned that there is a fix somewhere but I've searched and haven't been able to turn up anything.
Basically, after I connect to 4G, then go back home and want to connect back to WIFI, I have to reboot before WIFI will work. And vice versa. After connecting to WIFI, I have to reboot before 4G will work.
Any help would be greatly appreciated.
Tim
I have the same issue. That will be a real pita.
timdsmith72 said:
Good afternoon,
I read in another thread on here that there are a few that have experience this and one mentioned that there is a fix somewhere but I've searched and haven't been able to turn up anything.
Basically, after I connect to 4G, then go back home and want to connect back to WIFI, I have to reboot before WIFI will work. And vice versa. After connecting to WIFI, I have to reboot before 4G will work.
Any help would be greatly appreciated.
Tim
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Click to collapse
Have you tried turning the radios on and off? Perhaps turning them both off then back on? perhaps turning on airplane mode then turning it off?
midri said:
Have you tried turning the radios on and off? Perhaps turning them both off then back on? perhaps turning on airplane mode then turning it off?
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Click to collapse
Say I'm at work on 4G. When I get home and then turn the 4G radio off and turn WIFI on, the WIFI radio fails to even turn on. I get an error saying it couldn't be activated...or something similar. Haven't tried toggling airplane mode.....
timdsmith72 said:
Say I'm at work on 4G. When I get home and then turn the 4G radio off and turn WIFI on, the WIFI radio fails to even turn on. I get an error saying it couldn't be activated...or something similar. Haven't tried toggling airplane mode.....
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Click to collapse
If you leave 4g and wifi both on through out the day do you run into problems? Or is it just initializing them after they have been off and you've been using the other radio.
midri said:
If you leave 4g and wifi both on through out the day do you run into problems? Or is it just initializing them after they have been off and you've been using the other radio.
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Click to collapse
So far it's been just initializing them after I've been using the other radio. My habit has been leave home, turn off WIFI and turn on 4G. Arrive home, turn off 4G, turn on WIFI. I haven't tried leaving both radios on all day... Hmmm....
Airplane mode does nothing.
Wifi on, turns off 4g. You can have one or the other on, not both.
Reboot phone, the first one you turn on, either wifi, or 4g, gets control until the next reboot.
I cannot find any way around it. Going to test a stock rom.
Stock ROM had 4g turned on and connected. (this is stock with the latest update)
Turned on wifi, it changed the status of 4g to Disconnected and it did enable wifi.
Must be something with the radio..
I am on DC 3.2.3 and baseband version 2.05.00.06.10
I'm on DC 3.2.3 Baseband version 2.05.00.06.10.
Radios *should* be fine. I did whitslack's method then flashed DC on top of that. Grrr... Sure is annoying having to reboot twice a day.

[Q] Xperia Play Wi-Fi Only

I live in Canada.
I only want an Xperia Play as a wi-fi only device, to play emulators, listen to music, take pictures, just something I can have with me on trips and use as a mini-android tablet. I do not have a cell phone, I don't plan on using it as a cell phone, I don't really like cell phones. I never plan on putting a sim card in this thing ever or making a single phone call on it.
I ordered a Verizon Xperia Play from eBay because it was super cheap compared to everyone else.
My question is this:
Will I have to do anything to this device to use it as I have stated above? Or will I just be able to use it right away.
Thanks very much for the help.
If thats the way you want it, you'll have to disable mobile data, and background data. This will keep it from trying to connect to anything.
The cell radio will stay on for the emergency call feature. But this can also be completely disabled if you turn on Airplane mode. Which disables everything. you can turn this off when you want to connect to Wifi.
Thanks very much, that was very helpful and concise. Cheers!
Actually, you can turn airplane mode on, and then turn WiFi on. You don't need to go out of Airplane to do that....
This is how I use my Xperia Play. I don't have a sim card in it. I leave it in "Airplane mode," and then turn on WiFi when I need it. I leave "Background data" enabled so I can access the Android Market when WiFi is up. Also FPse needs to check in every now and then, or else it goes into limited mode. I think Background data needs to be enabled for this to happen. Airplane mode keeps battery usage low so I can keep playing.
Sent from my R800at using XDA App
Thanks for all these replies, very useful and will help me enjoy my new toy to the fullest.
Bacondroid said:
Actually, you can turn airplane mode on, and then turn WiFi on. You don't need to go out of Airplane to do that....
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Click to collapse
Really? Didn't know that, thought airplane mode stopped thing from being enabled.
Yes you can turn on WiFi while in Airplane mode. It keeps the cell radio, GPS, etc off.
Sent from my R800at using XDA App
Ok then guess I'll recap for the OP:
Turn on Airplane mode
Thats is all. Aparently you can keep background data enabled, it just won't do anything until you turn on Wifi, which works when airplane mode is turned on.
Problem solved.
Thanks, at least I know I don't have to do major modifications. I had visions of a nag screen preventing me from using the device if there was no sim card in it.
Well technically theres no nag screen, but you will have an error in the status bar saying that there no sim card.
Yeah, that's not a big deal.
r800x doesn't require a sim card period lmao so you'll never get that message
Well that's good to know too.
Fine he'll get an error saying no network connection....picky picky.....
Masters2150 said:
Fine he'll get an error saying no network connection....picky picky.....
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Actually I have a CDMA R800x that I use this way and I don't get that error. Then again I am rooted running Turbo Kernel with P.A.C. Man rom.
Maybe that's why?
Before I unlocked my bootloader though, I don't remember ever getting an error message. I do remember everytime I rebooted there was a nag screen that said "your phone is not activated would you like to activate it?" but the choices were activat or skip.

Completely lost cellular signal roaming internationally

Been in Scotland last few days and had no issues using data last couple days until now. I went up to the highlands where signal wasn't great and I had the phone in airplane mode but now that I am back in Edinburgh and know I get signal here it'll connect for 10 seconds than disconnect. No data or phone calls. Roaming wasnt turned off or anything. I already shut off my phone and reset mobile data setting.
I am. TMO US
worldsoutro said:
Been in Scotland last few days and had no issues using data last couple days until now. I went up to the highlands where signal wasn't great and I had the phone in airplane mode but now that I am back in Edinburgh and know I get signal here it'll connect for 10 seconds than disconnect. No data or phone calls. Roaming wasnt turned off or anything. I already shut off my phone and reset mobile data setting.
I am. TMO US
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Click to collapse
Maybe try taking the sim out and resetting mobile data again, power off(or hold power 10+ secs to reset). Reinstall sim and power back on. Also take a look in phone testing, dialer *#*#4636#*#* => phone information.
Thanks, just saw this
https://www.tmonews.com/2018/01/t-mobile-international-roaming-outage/
an21281 said:
Maybe try taking the sim out and resetting mobile data again, power off(or hold power 10+ secs to reset). Reinstall sim and power back on. Also take a look in phone testing, dialer *#*#4636#*#* => phone information.
Click to expand...
Click to collapse
https://www.tmonews.com/2018/01/t-mobile-international-roaming-outage/
worldsoutro said:
https://www.tmonews.com/2018/01/t-mobile-international-roaming-outage/
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Click to collapse
Ah there you go then... Hopefully they get it back up soon

My N9750 stuck in airplane mode help

Hi all
I just bought a Note 10 plus (n9750/BRI version).
Can't have network (I tried several SIM card). The phone remains in airplane mode. this is the first time I have such behavior
I also flash the phone with a stock ROM but it has not changed
Thanks for your help
jb75009 said:
Hi all
I just bought a Note 10 plus (n9750/BRI version).
Can't have network (I tried several SIM card). The phone remains in airplane mode. this is the first time I have such behavior
I also flash the phone with a stock ROM but it has not changed
Thanks for your help
Click to expand...
Click to collapse
Not sure if you found a solution yet.
But it may have to do with wifi calling settings.
https://support.t-mobile.com/thread/42989
Btw i have the same model 9750, but have never seen this issue...
Sent from my [device_name] using XDA-Developers Legacy app
Now that it is mentioned here, when I turn the airplane mode on in quick tiles, I am not able to turn it off the same way, I need to go to settings, connection, to do it, as I rarely need that mode, it doesn't bother me, but it is odd nevertheless
I tried several methods without result. The phone detects the sim card but does not want to leave the airplane mode. it's really strange...
I do not know what to do
jb75009 said:
I tried several methods without result. The phone detects the sim card but does not want to leave the airplane mode. it's really strange...
I do not know what to do
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Click to collapse
Screen shots...home screen, settings/connections and Mobile Networks/Network operators...
Wifi Calling settings ....etc
Sent from my [device_name] using XDA-Developers Legacy app
same here
toggled airplane mode from quick tiles and the switch is not a solid color but faded and i can make calls so is not real airlpane mode
i think is a bug on last 2 security updates
is there any solution regarding this issue
AndrOmega said:
same here
toggled airplane mode from quick tiles and the switch is not a solid color but faded and i can make calls so is not real airlpane mode
i think is a bug on last 2 security updates
Click to expand...
Click to collapse
is there any solution regarding this issue
Where do you bought the phone maybe the phone was opened and repaired before. If so certanly if its charging port board changed from different wariant (region) of Note 10 + and that is 100 % cause of the problem. The image here is for the correct model of charging board.
https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.aliexpress.com%2Fi%2F4000298656724.html&psig=AOvVaw1RHTsZrnbV6ljz-mo-GlXU&ust=1595547503965000&source=images&cd=vfe&ved=0CAIQjRxqFwoTCNC_wOSD4uoCFQAAAAAdAAAAABAD
Even i'am facing the same issue on my samsung j8 phone ,i recently got fixed my broken display .From the day i fixed its behaving ,wired
it is blocked in airplane mode and not allowing to detect the network.

Pixel 2 battery died, now WiFi won't turn on, and it says No SIM Card

My phone appears to be screwed and I don't know why or what happened, I'm super bummed. I've tried turning WiFi, mobile data, airplane mode on off, restarting in safe mode, etc. and nothing I've been able to do works to get WiFi or Mobile Connection to work again.
Right now I'm trying to kill the battery since that's what happened before the last time I used it but I don't know how that will help.
Anybody have some ideas on why or how this could happen? Phone is great otherwise.
Could a Factory Reset help?

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