Find What's Unique About Your Favorite Phone

What makes Acer Liquid S1 Duo unique?

Here are 3 unique features & highlights of Acer Liquid S1 Duo :
1 The best1 HD phone with 8 GB memory
2 The #2 HD phone in terms of specifications
3 The #3 HD Dual SIM phone with the highest camera resolution
1 based on 91score