1.51 Why can't the Bluetooth headset display its battery 
level? 
Certain headsets don't support the display of battery level, which has nothing to do with your 
phone. 
1.52 What is Wi-Fi+? 
When you activate the Wi-Fi+ feature on EMUI 3.1, your phone will carry out connectivity 
tests on the available Wi-Fi networks, which may increase Wi-Fi data usage. The main 
features of Wi-Fi+ plus include: 
1.  Automatically enable/disable Wi-Fi based on previous connection history. 
2.  Switch between Wi-Fi and mobile data networks depending on the signal strength (you 
will be prompted when the phone switches from a Wi-Fi network to a mobile data 
network). 
3.  You can disable these prompts by selecting Do not remind again. 
1.53 How can I enable/disable Wi-Fi+? 
You can enable/disable Wi-Fi+ in EMUI 3.1 by going to Settings > Wireless and 
Networks > More > Link+ > Wi-Fi+. 
1.54 Under what circumstances will Wi-Fi+ enable/disable 
Wi-Fi? 
When you are connected to your home Wi-Fi network, Wi-Fi+ will disable Wi-Fi when your 
phone leaves the range of the cellular network tower nearest to your home. When you return 
home, Wi-Fi+ will automatically enable Wi-Fi and connect to your home network. 
1.55 When Wi-Fi+ is enabled, why do I receive a prompt 
stating "Network was previously detected as having no 
Internet access, automatic connection disabled"? 
This may be because your phone previously detected the network as having no Internet access, 
therefore it will not automatically connect to the network in future. Nevertheless, you can still 
connect to the network manually.