Fix Samsung Galaxy A5 unable to detect sim card

This experience happened out of the blue when suddenly my samsung galaxy a5 unable to detect the sim card network. As a result the cellphone cannot stream internet data but it can call and receive sms messages. But internet is very important these days for YouTube, Whatsapp, Facebook, TWitter and Instagram - so without the internet the smart phone is pretty low usage.

I thought when the data signal off the network might have some problem - but after a while there was still no data. Then after that restarting the A5 device but the problem still persist. Then follow this step

1. Turn off the phone

2. Take out the sim card from the phone - use a pin or small paper clip will do

3. Rub the surface of the sim card circuit to clean it

4. Put back into the phone

5. Turn on the phone

6. The signal comes back

That is how i solved my SAMSUNG GALAXY A5 network signal problem