Hi guys just want to ask I just bought Galaxy W at Sunway Pyramid Samsung concept store. However they did not stamp the warranty card for me. Is it okay for them not to stamp my warranty card? It is stated that my warranty will be valid for 18 months. I have heard from some people that if you register your phone online( via sms I'm not sure about this) you are eligible to get 2 years warranty, is this information correct? My concern is should I head back and ask them to stamp my warranty card? Thank you guys

Is it? Because I'm afraid that the seller might forget to do so for me ><. I am asking mainly because I don't want to go a long way back to Sunway Pyramid just to get them stamp the warranty card for me