So i tried cutting my sim card to nano-sized some days ago, at the beginning it works without any problem.

But several weeks later, it failed to work.

Any ideas?

lol cut using plier? lmao

Just get a new sim card replacement. No need to panic

Alright i will give it a try

The nearest phone shop is too far away from home xD

I have the same problem

I thought that sim cards these days are already pre-cut. All you have to do is seperate it from the boy untill you get to the required size. Never go manual on things related to phones, it could end badly. I think that you did not cut it properly. Thats why. Replace your sim card and have it cut by the sellers.

Why in the world would you do that. You could have damaged your phone. I think that whle cutting it you may have cut out some important parts of the simcard. It wiil work but then stop after a while. I have seen many cases like this. It will be alright, the phone is not damaged, its all about the simcard.