Question Sim Card is being detected but No Service!! (Emergency Calls Only) - Xiaomi Poco F3 / Xiaomi Mi 11X / Redmi K40

My mobile is acting weird lately. The sim cards automatically gets disconnected (no service) although the sim card is still being detected.
After a while the data on the sim works but volte stops working, ie i cant make calls but can use the mobile data.
restarting the phone fixes it but it again starts to happen?
Things ive tried,
1.Tried flashing the stock firmware (India, Europe and Global)
2.Gotten the sim card slots replaced @ service centre
Somebody Help!!

Replace the sim card? Usual suspect... handle like a stick of ram. They can be damaged by ESD and the failures can be unpredictable if so.

i have the same thing.
Using an Mi5 right now with the latest LineageOS ROM, and most of the time the sim card is completley disconnected, and i need to reboot the phone, and then it asks me again for the SIMCARD pin, but sometimes i need to reboot 2-3 times until i get the message to enter my simcard pin.

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My Sony Xperia M5 restarts when i use Reliance GSM SIM Card!! Help me please :(

Hi,
I am from India. I bought this phone last month and I didn't find any problem with my phone till yesterday. I ported my number from Vodafone GSM to Reliance GSM for some better tariffs. When I inserted my SIM card it restarted telling me that "New SIM Card Inserted. Restarting..". But at the next complete boot the phone restarted again telling that "SIM Card Removed. Restarting". I didn't remove the SIM Card or use anything. It is restarting whenever I put that SIM Card. I have tried replacing a duplicate SIM Card and again my phone is doing the same. Seeing many websites, I have tried blowing and sucking the slot so that may remove any dusts. (If any). And tried using the SIM Card in all other phones. It perfectly works on all phones. In my mobile I have tried using all SIM Cards. Everything works in my phone except this Reliance GSM. What to do??
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Jagannath Sankar
try using different sim slot

LG G3 d855, no sim card after installing an app

Hello,
I installed an app called "Arduino accelerometer OTG USB" from the play store to read out the accelerometer of my phone and send it to the arduino board. Unfortunately, right after the app got installed an error message with a progress bar occured. It says that there is no active sim card and that the device will reboot to check for an active one. Sometimes, the whole process repeats after the reboot. Otherwise there is just the notification that no sim card is inserted into the phone. Strangely, in rare cases, the sim card gets detected and it's possible to make phone calls.
What i've already tried:
-checking the phone for malware
-turning on and off airplane mode
-clearing the cache via settings/storage/cached data
-rebooting the phone in safe mode
-a factory reset
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None of them worked.
Thank you for any piece of advice.

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Hi. I've got weird problem. Coincidentally, I updated my OP3 to OxygenOS 5.0.1 and at the same day i changed my mobile operator (so my sim card too, of course). Since that day i have got very weird problem. After reboot my phone doesn't recognize my sim card anymore (just like any sim card wouldn't be inside phone). This is happening once in a few reboots. One of the problem solutions is another reboot (But this doesn't always fix my issue). Another solution is to put out sim card nad put it inside phone again. I don't know is it problem of:
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Question SIM Card Activation Issue

Hi everyone,
I'm having issues with a physical SIM whereby my phone (Xiaomi 13 Pro) doesn't want to activate the SIM line nor can I input the PIN to unlock the SIM card. Essentially the phone is happy with the SIM not functioning at all and there's no way to change the status. I want to mention that it did prompt me the very first time I inserted the SIM for initial setup but hasn't been since then. Rebooting, turning airplane mode on/off doesn't seem to prompt the unlock/activate the SIM. I have to use that specific SIM on another phone now. Any clue on how to solve this or force the phone to unlock and activate the card?
Thanks!
Maybe try deleting the pin code with the other phone and/or using the other location.

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