Here's one way to capture traffic of apps on mobile phones.

how Fiddler works
1. Install Fiddler
Official Download:http://www.telerik.com/download/fiddler
2. Configure the Fiddler

set Fiddler Options
(1) Run Fiddler
(2) Set Tools → Fiddler Options as shown above
(3) Restart Fiddler
3. Configure the Client

get ip of Fiddler server_1

get ip of Fiddler server_2

wifi setting_MEIZU
(1) Get IP address of Fiddler server: hover over the online icon OR type in commandipconfig on cmd
(2) Set WIFI of mobile phone, connect to the same WIFI which Fiddler server connected
(3) Set proxy of WIFI, turn on it and input server(ip) and port
eg. as shown above ip:192.168.1.104 port:8888
4. View Traffic on Fiddler
After settings above done, traffic can be viewed on the Fiddler.
Fiddler is a usefull tool not just for developers, testers but also product managers... to be continued