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S10e , second sim card loosing network signal

First Poster

Hi  I have a s10e . I have two sim cards fitted . Last week for no apparent reason the second sim card which is on the lyca mobile network began to loose network signal. It also keeps asking to input the sim password. When the sim password is entered it takes about 30 seconds before it accepts the sim password. The network for the second sim then shows no signal. I cannot use the second sim for texts ,calls or data. I have cleared the memory cash. Removed the sim and refitted it , changed the sim slots. The sim toolkit app has also disappeared from the phone for the second sim.

Any idea what is going on 

Superuser I
Superuser I

Does the sim card work ok in another phone @Chosin  ?


If it does then my suggestion is to let a Samsung Experience Store  / Samsung Service Centre have hands on with it.



Current Phone ~

Samsung Note 20 Ultra 5G SM-9820 _256Gb SnapDragon 865+

Samsung One Ui 2.5/ Android 10.


The sim card works correctly in a HTC phone I have. 

I put the sim card into a friends s10 dual sim with there sim still installed and the same thing happened to their phone . 

The sim took a long time to unlock after the password was inputted and as soon as it went by that screen the signal dropped on both of the networks. 

The other sim came back but the lyca sim stayed at no signal 

Just strange that it was working fine for months then all of a sudden this problem arises .

Anyway thanks for advice I will have a look for one of those stores  

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