Sorry video and photos did not do after repair, just before repair .
The repair is quite challenging, I recommend to take your phone to mobile phone service .
There's a thread about this issue already. Please get through on it, maybe you'll find the solution. Click here.
If you use a cut-to-size nano SIM-card, please don't do that but get an original nano SIM from your service provider.
Just for testing purpose I suggest you to try without a SIM card. Install the SD card only and let's see what happens. Maybe your SD card simply can't establish a good contact due to a deformation of the SIM/SD card socket. Unfortunately there's a real chance finally you have to send back your phone for a replacement.
@massstersvk: Did you take photos or videos of the process? Was it difficult? Did you see any clues of bad design / testing that could get this pin broken easily? Thanks in advance.
Do not try this at home!
This can be repaired but must have thereafter tools.
Send to a complaint , or if you do not want to wait so to Mobile Phone Shop (service)