11.20 Why can't I connect my phone to an OTG cable? ................................................................................................. 168
11.21 Why can't I connect my phone to a USB drive using an OTG cable? ................................................................... 168
11.22 Can I connect my phone to a mouse or a keyboard using an OTG cable? ............................................................ 168
11.23 Why can't I transfer files to another Bluetooth device that I've already paired with? ........................................... 168
11.24 How do I view my phone's MAC address? ........................................................................................................... 168
11.25 How can I tell whether the phone is connected to the Internet using mobile data or Wi-Fi network? .................. 169
11.26 How do I view mobile data usage? ....................................................................................................................... 169
11.27 Can I share my phone's mobile network connection using a USB cable? ............................................................. 169
11.28 How can I tell whether my phone supports Bluetooth tethering? ......................................................................... 169
11.29 What is a Wi-Fi hotspot? ....................................................................................................................................... 169
11.30 Why is the data connection on one of the SIM cards very slow? .......................................................................... 170
11.31 How do I add a bookmark in the built-in web browser? ....................................................................................... 170
11.32 How do I close pages in the built-in browser? ...................................................................................................... 170
11.33 How do I open a new page in the built-in browser? .............................................................................................. 170
11.34 How do I delete personal data from the built-in browser? .................................................................................... 170
11.35 How do I save an image from a web page?........................................................................................................... 170
11.36 How do I transfer files using OTG? ...................................................................................................................... 171
11.37 How can I set up USB tethering? .......................................................................................................................... 171
11.38 Why is the network speed slow when I use the Wi-Fi connection? ...................................................................... 171
11.39 When I send files using Bluetooth, why does the Wi-Fi connection sometimes become unavailable? ................ 171
11.40 Why can't I access the Internet in ultra power saving mode?................................................................................ 171
11.41 How can I access 4G? ........................................................................................................................................... 171
11.42 How do I disable the 4G network connection? ..................................................................................................... 172
11.43 Why does my phone have no 4G signal? .............................................................................................................. 172
11.44 Does the 4G network consume much traffic? ....................................................................................................... 172
11.45 Do I need to change my phone number or SIM card before I can access 4G? ...................................................... 172
11.46 Why can't I access the 4G network? ..................................................................................................................... 172
11.47 Why is my phone displaying the 3G icon when I am using a 4G SIM card? ........................................................ 173
11.48 Can my 4G phone use the 3G card? ...................................................................................................................... 173
11.49 What is 4G?........................................................................................................................................................... 173
11.50 Why does the 4G phone consume more traffic than the 3G phone? ..................................................................... 173
11.51 How can I use the 4G service? .............................................................................................................................. 173
11.52 Why is the usage calibration message of Phone Manager incorrect or is the calibration failed? .......................... 173
11.53 Why can I use only the 2G network? .................................................................................................................... 174
11.54 What is Signal+? ................................................................................................................................................... 174
11.55 Where can I learn the Signal+ description? .......................................................................................................... 174
11.56 What is Roaming+? ............................................................................................................................................... 174
11.57 Where can I learn the Roaming+ description? ...................................................................................................... 174
11.58 My phone displays the 3G or 2G symbol even after I turn off mobile data. Will this use my mobile data allowance?
........................................................................................................................................................................................ 174
12 Screen and display .................................................................................................................. 176
12.1 What can I do if my screen is erratic? ..................................................................................................................... 176
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