sim card not detecting - Xiaomi Redmi Note 4 Questions & Answers

I uninstalled some system apps. I don't know thats why one of my sim card always shows no service. Sim2 have no problem sim1 no service.plzz help

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[Q][Ninetology i5300] Sim1 Slot Not Detect Sim Card

Want To Ask Why Sim1 Slot (3G) Not Detect My Sim Card?I Have Insert 3 Sim Card But Still Not Detected...But My Sim2 Slot (2G) Works Well....Plzzz Help Me...

sim card slot problem

Hello guys .
i have tecno w4 dual sim card anyway my sim 1 cant read my sim "etisalat" and "we" it only reads "Vodafone"
and also my sim card slot 2 works fine with all sim cards .
i tried to do a factory reset and i got another etisalat sim card but still the same problem now im forced to use vodafone on sim card slot 1
does anyone knows whats the problem with my phone ?

Device recognize sim card but no signal and network

My sim card is recognized but there is no net work service. Anyone help?

Moto g3 2015 - no sim card - emergency calls only

Hi, I have this problem that my moto g3 single sim version (XT1541) won't recognize my sim card and other sim cards as well, but not all, actually it recognizes only 2 operator sim cards which is strange. I tried my sim card in someone else's phone to make sure that the sim card was not the problem, and it worked without any issues.
The problem began soon after I removed my sim card without turning off the phone, and inserted another sim. The sim card was not detected then I returned my regular sim and was also not detected. It keeps on saying no sim card - Emergency calls only. I have tried everything from restarting, factory reset, reinstalling stock rom and *#*#4636#*#* with no luck. Like I said before the strange thing is that it only detects two operator sim cards namely Tigo and TTCL but does not detect other operator sim cards (tried 3 different onces). Does anyone know what the problem might be and how to solve this problem?
@zolong1
You might have to get the phone to a repair center.

Hybrid Card slot SIM or SD Card, why not store SIM Card data embedded in the phone?

Hello,
Why it is not possible to hack a android phone to store the SIM Card data from the SIM directly in the phone?
I mean somthing like "E SIM" for poor ones. On devices with port for two SIM or one SIM and one Micro SD card that would be a great
solution to use dualsim and SD Card simultaneously. I heared that SIM cards have some sort of "Number" who can not be copied, is that the problem why that does not work?

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