how to improve the signal for iphone?

The problem ofpoor signal believe most faithful machine in use of mobile 

phones during the encounter, and factors affecting the quality of the phone 

signal there are many, there is the problem the phone itself, but also the 

impact of external factors. Generally speaking, iPhone will automatically the 

access according to user's mobile phone card the corresponding network, over-

sometimes bad signal when will also appear circumstances can not find mobile 

phone network of, while the recent there is a lot users are The Advisory 

iPhone cell phone how to improve signal, for the problem everyone put forward 

of, I come give everyone introduce

1, in thesettings, click into the "carriers" option.

2, in thecarrier options page, turn off the "Auto" function.

3, will be displayed later on the network operators, users simply choose 

according to their corresponding phone card operators can, for example, China 

Mobile users can select the "China Mobile."

Do that will be ok.