Apple preset network debugging tools in iOS, but only add the tested equipment, and use the device to activate the connection under Xcode
Before 1.Xcode not connected
2.Xcode connection found setting up a multi-: Developer
3. Select Status
4. Select the desired simulated network state
• Precautions: Developer options is also available globally, if an item is turned on network status, valid for the entire system. So after you finish testing app should be promptly closed.
The various networks Interpretation
• 100% Loss: whole packet loss
• 3G: 3G networks
• DSL: telephone line
• Edge: a transition from GSM to 3G technology, and can be seen as 2.5G networks.
• High Latency DNS: high latency networks
• LTE: LTE is a transition between 3G and 4G technology, is the world standard of 3.9G
• Very Bad Network: network situation unstable network
• Wi-Fi: Wi-Fi mode under 4th generation standard 802.11n
• Wi-Fi 802.11ac: fifth-generation standard in Wi-Fi mode