According to the foreign media phoneArena, the A5/A3 signal of the all metal body is poor. In the same location and the same SIM card environment, the S5 signal is three bars, and the A5/A3 signal is two bars (four bars are full).

Through software test, the signal strength of S5 is - 82dBm, A3 is - 92dBm, and A5 is - 93dBm. The higher the dBm value is, the better the signal is. Since the signal strength is negative, the - 82dBm of S5 is about 10dBm higher than that of A3/A5. PhoneArena said that this situation is similar to the "antenna door" incident that occurred when the iPhone 4 was just launched. The innovative metal frame and front and rear glass design of the iPhone 4 have a greater impact on the signal and will produce a "death grip". The full metal body of the A3/A5 is a challenge to Samsung's antenna design. At the same time, phoneArena stressed that the A3/A5 signal is not too weak to use, but in contrast, it will be slightly inferior to S5.

Via