Moram priznati zgodno rješenje, još malo usavršavanja i poboljšanja karateristika i moglo bi od ovog ispasti nešto sasvim solidno:

http://www.wndtelecom.com/en/mobile/2000-Duo

Frequency Band - Tri-Band (GSM 900/1800/1900 MHz)
Dimensions - 97mm x 48mm x 17mm
Weight - 100g
Front & Back Display - 65,636 colors, 128 x 160, 1.5 inch OLED
Battery - Li-polymer, 1660mAh integrated
Standby Time - Over 150hrs with Standard Battery
Talk Time - Over 6hrs with Standard Battery

Da li je ovdje moguće koristiti 2 SIM kartice istovremeno? Nigdje se ne spominje dvostruki antenski sklop, ali se spominje:
the Duo 2000 lets you streamline your life, bringing personal and business needs together in ultra convenient and sleek style.
Mislim da je moguće jer bi inaće ovaj projekat bio samo malo veći kič od dualSIM adaptera