Dual sim adapter for 3G/4G technology

[gabrieljames]

Can someone give me information on UMTS and dual sim card adapter. Please suggest me a dual sim adapter working with UMTS system?

[darren95al]

Universal Mobile Telecommunications System (UMTS) is one of the third-generation (3G) cell phone technologies, which is also being developed into a 4G technology.
Dual sim card adapter helps to use 2 sim cards in one phone. Yes I am using a card called Hypercard 3G and it really works with UMTS. I got it from http://www.2-phones-in-1.com/