Dual Sim doesn't work properly after system updates

[Itchigo]

Dual Sim doesn't work properly after system updates tried to switch the Sims but still the same 

[Nashwa1210]

It is happening with me all time not only after updating the system but if I have to restart the phone so I'm keeping restart it until it work there is no otherway

[Itchigo]

طيب والحل ؟ بردو بعمل ريستارت كتير بيشتغل يومين ويرجع يفصل

[Mahmoud_Hashim]

ده ممكن تساعدني في حل المشكلة https://r2.community.samsung.com/t5/جالاكسى-A/تطبيق-Samsung-Flow-لا-يقبل-التثبيت-على-هاتف-A20s/td-p/...

[AlyS]

What do you mean by switching the sims
Do you mean for example when you choose the sim for calling or what ?
Please share a screenshot to explain better.

[Itchigo]

I moved Sims in different slots I mean Sim 1 to slot 2 and so on

[samsungmena]

Itchigo

Hello. I’m Mehad , Samsung Moderator
Thank you for asking the question
kindly follow the below steps

Make sure that the device does not encountered any issue like dropped in any liquid or fall on solid floor

Change the network mode and see if that will make any difference through

settings – connections – networks – mobile network settings – network mode

Check if calls can be made after switching the phone off and on.

check the device with another SIM card

try the sim card in different Mobile phone to check whether the issue with the phone or the Sim card

if another SIM card works with the device kindly contact with the network provider in order to fully assist you

if the issue still exist we recommend that you perform a factory data reset to resolve this issue using the steps below:-

Launch the Settings app and tap General management → Reset → Factory data reset →

RESET → DELETE ALL.

Ensure all user data is backed up using smart switch

from the link below and then use the backup tool to create a data backup

http://www.samsung.com/eg/support/smartswitch/


If you have any other question, can you explain it to us
We are  at your service always
Thanks for your time