When at your shop  you got any mobile phone  for repairing insert sim ,no service problem , emergency call , are not detected sim card so how can repair  and how to solve that problem step by step we can showing in this blog .
If you want to repair the Samsung Grand Prime plus SIM not detected problem  so we have given the below photo how to find the line and what will be the cold testing reading weekend showing in this post so please find it and repair that problems .

If you have any problem Samsung Grand Prime plus insert sim problem so 1st of all need clean to check the SIM card jack because 40 to 50% chances maybe faulty sim card that day after that you will check out the cold testing reading that  reading is near about the 550 ohm if you have check the multi meter continuity range you got that reading.
In this image we have showing the SIM card jack way how to design in motherboard what should find to use check that track if any track is missing you make that jumper we can showing on image so that thing is important guys because many cases have the way is damage so it will be help to repair and find out the jumper solutions we can given in this image it will be helpful
If all. Is OK so maybe possibility phone have the any software issues so you just try to software and check out the EMI number also because many cases the EMI number is invalid so maybe chances phone not get the network connectivity and its showing the no service
If you want to check the EMI number any mobile phone users dial the number *#06# so automatically you got the EMI number if there is showing the invalid or null so it mean EMI is invalid and you just try to make the software in phone after that you got that network

I am telling the thing guys all posters in this website is tested by me Akash maybe chances it have the some issues so you just take the own risk to repair your phone because if any harmful damage on your mobile phone we are not responsible thank you for your support

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