8.9 What can I do if the GPS positioning is inaccurate? ................................................................................................. 133
8.10 How can I enable the GPS? .................................................................................................................................... 133
8.11 How do I use the GPS on my phone? ..................................................................................................................... 133
8.12 How can I use the GPS with an offline map? ......................................................................................................... 134
8.13 What are LBS? ........................................................................................................................................................ 134
8.14 How do I enable the LBS? ...................................................................................................................................... 134
8.15 Does the LBS use the data traffic? .......................................................................................................................... 134
8.16 What can I do when the LBS is unavailable? ......................................................................................................... 134
8.17 What can I do when the LBS fails?......................................................................................................................... 134
8.18 What is GPS? .......................................................................................................................................................... 135
8.19 Does the GPS use huge data traffic? ....................................................................................................................... 135
8.20 How can I reduce the data traffic usage fee when using GPS on my phone? ......................................................... 135
8.21 What can I do if the GPS information is inaccurate? .............................................................................................. 135
8.22 How can I strengthen the GPS signals? .................................................................................................................. 135
8.23 What is the working principle of GPS? .................................................................................................................. 136
8.24 What are the differences between GPS and base station positioning? .................................................................... 136
8.25 How can I prohibit an application from acquiring personal location information? ................................................ 136
Go to Settings > All > Location access and disable Network location. ............................. 136
9 SIM card and appearance ........................................................................................................ 137
9.1 Why does my phone read the contacts from the SIM card slowly? .......................................................................... 137
9.2 Why can't I insert a non-standard SIM card into my phone? .................................................................................... 137
9.3 Why can't I insert the SIM card into my phone smoothly? ....................................................................................... 137
9.4 Why are the outer surfaces of the SIM and microSD card trays and the surfaces of the aluminum decorations uneven?
........................................................................................................................................................................................ 138
9.5 Why doesn't the SIM card slot have springs? ........................................................................................................... 138
9.6 Why are the two gaps on the two sides of the SIM card tray harsh? ........................................................................ 138
9.7 What can I do if the SIM or microSD card installation direction is hard to identify? .............................................. 138
9.8 Why does the SIM card tray shake?.......................................................................................................................... 138
9.9 Why are there marks left on the cover after I connected my phone to a USB cable for multiple times? .................. 138
9.10 Why does the plastics around the touchscreen easily get dirty? ............................................................................. 139
9.11 Why is the gap between the battery cover and the mechanical part large? ............................................................. 139
9.12 Why is my phone's front camera deviated? ............................................................................................................ 139
9.13 Why is my phone bent and deformed after I sit on it? ............................................................................................ 139
9.14 Why does my phone's charging port seem black and used? ................................................................................... 140
9.15 Why does the side button (power button or volume button) shake? ....................................................................... 140
9.16 What can I do if my phone doesn't respond after I press the power button? ........................................................... 140
9.17 Why are there two black bars on the USB port of my phone that I just purchased? ............................................... 140
9.18 Is my phone's warranty still valid if I remove the network access license or the license is damaged? ................... 140
9.19 Why can't I take out the microSD card inserted in the SIM card tray? ................................................................... 140
9.20 Can I insert an iPhone 5/5s nano-SIM card to my phone? ...................................................................................... 141
9.21 Why does the plastics around the battery cover easily get dirty? ........................................................................... 141