For the price, the Acer Liquid Z5 is a ordendliches smartphone. The lower resolution is hard to see (at least for the average user). Toll are two slots for SIM cards. The design is also appealing. Disadvantages of course for the price also. Without an SD card, the device is hard to use. In bright light, you can read the screen by the reflective surface worse. The GPS receiver need quite a long for Ordung the signal.
All advantages and disadvantages also are however already in the relevant test magazines.