7.2.7 How do I use USB audio to play and record audio? ................................................................................................ 91

8 Messaging and email .................................................................................................................. 92

8.1 SMS and MMS ........................................................................................................................................................... 92

8.1.1 Why can't I receive a bank or verification code message? ....................................................................................... 92

8.1.2 How do I set delivery reports for messages? ........................................................................................................... 92

8.1.3 How do I cancel sending a message while it is being sent? ..................................................................................... 93

8.1.4 How do I type a message in full-screen mode? ....................................................................................................... 94

8.1.5 Why is there sometimes no ringtone/indicator light when I receive a text message? .............................................. 94

8.1.6 In the timeline on the messaging screen, why are messages from an earlier time displayed at the bottom? ........... 96

9 Calls and contacts ........................................................................................................................ 97

9.1 Calls ............................................................................................................................................................................ 97

9.1.1 Why does my phone show I have a 4G signal, but I can't make calls? .................................................................... 97

9.1.2 Does my phone support directional handsfree calls? ............................................................................................... 97

9.1.3 Does my phone support virtual HD call? ................................................................................................................. 97

9.1.4 Why do I hear echoes when two phones are used for a handsfree call or WeChat voice call? ................................ 98

9.1.5 Why do I hear rustle when I use a headset for calls? ............................................................................................... 99

9.1.6 Why do I hear noises when I use a headset for calls? .............................................................................................. 99

9.1.7 Why does my phone vibrate when I end a call? ....................................................................................................... 99

9.1.8 Why does the headset announce the caller name when a call comes in? ................................................................. 99

9.1.9 How do I set my phone to display the company and position information on the incoming call screen? ............... 99

9.1.10 Why is the incoming call notification displayed in banner mode when I am using the onscreen keyboard? ...... 100

9.1.11 Why does my phone not ring or display anything when a call comes in?............................................................ 101

9.1.12 Why does the speaker make crackling noises when I make a call in handsfree mode or play music in speaker

mode? ............................................................................................................................................................................. 102

9.1.13 Why is the sound from the receiver so low when I make a call? ......................................................................... 102

9.1.14 Why does the receiver make a strange/screeching/crackling noise during calls? ................................................ 102

9.1.15 Why does my phone not ring when a call comes in during recording? ............................................................... 102

9.1.16 Why does my phone still vibrate when a call comes in after I've turned off vibration? ...................................... 102

9.2 Contacts .................................................................................................................................................................... 103

9.2.1 Why do duplicated contacts without phone numbers appear in my phone's contacts? .......................................... 103

9.2.2 What can I do if the SIM card contacts are lost due to third-party application issues?.......................................... 104

9.2.3 Why can't I search for a contact properly? ............................................................................................................. 105

9.2.4 How do I erase the contact trace? .......................................................................................................................... 106

9.2.5 Why are contacts without names generated when I use 91 Assistant to import contacts? ..................................... 107

9.2.6 Why can't I see the contact photo or company information? ................................................................................. 107

10 Location services and navigation ......................................................................................... 109

10.1 Why does AutoNavi sometimes exit when running? .............................................................................................. 109

10.2 Why does Ctrip sometimes exit or freeze when running? ...................................................................................... 109

10.3 Why do some texts on Amap overlap? .................................................................................................................... 109

10.4 Does my phone support BeiDou Navigation Satellite System? .............................................................................. 110

10.5 Where can I find the GPS/location service switch? ................................................................................................ 110

Issue 01 (2016-01-27)

Huawei Proprietary and Confidential

Contents

Table of Contents