Motorola Moto Z4 User Manual

Issues during calls
After each troubleshooting step, check to see if your issue is fixed.
Screen goes black
1. If you are using a case, cover or screen protector, remove it and see if it was causing the issue.
2. Check your proximity sensor.
Dial a call and set the phone on a table (don't use speaker mode), then hold your hand over the
proximity sensor to see if you can turn the screen off and on.
3. Use safe mode to see if apps you installed are causing the issue and uninstall as needed.
Calls are dropping
1. Check your signal strength:
•
Weak signal from your cellular provider is a common cause of dropped calls. In the status bar, see
how many bars your network connection has. If you see only one or two bars, change locations to
improve your signal strength, particularly if you are indoors.
2. Turn your phone off and then on again.
Press & hold the Power button, then touch Power off. Then turn it on to establish a new connection
with the network.
3. During a call, check that the proximity sensor works by covering it to confirm that it turns off your
screen, preventing accidental touches during calls. You can also download an app to automatically lock
your screen during calls; search for “call screen lock” on Play Store.
4. Use safe mode to see if apps you installed are causing the issue and uninstall as needed.
5. Check if a software update is available for your phone.
6. Reset the phone.
People can’t hear me on calls
1. Check that nothing is covering the microphone:
•
If you are using a case, cover or screen protector, remove it and see if it was causing the issue.
•
Check that the protective film that ships with the phone has been removed.
2. Check to see if your phone is using Voice privacy. (This feature is not available on all models.) Turn it off
to see if sound quality improves:
a.
Touch .
b.
Touch > Settings > Calls.
c. Turn off Voice privacy.
3. If the issue occurs while using the speakerphone or a Bluetooth headset, check your signal strength.
In the status bar, see how many bars your network connection has. If you see only one or two bars,
change locations to improve your signal strength, particularly if you are indoors.
Fix issues : Call and SIM issues
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Motorola Moto Z4 Specifications

General

Display	6.4 inches, OLED, 1080 x 2340 pixels
Processor	Qualcomm Snapdragon 675
RAM	4GB
Storage	128GB
Rear Camera	48 MP, f/1.7, (wide), 1/2.0", 0.8µm, PDAF, OIS
Front Camera	25 MP, f/2.0, (wide), 0.9µm
Battery	3600 mAh, non-removable
Operating System	Android 9.0 (Pie), upgradable to Android 10
Dimensions	158 x 75 x 7.4 mm (6.22 x 2.95 x 0.29 in)
Weight	165 g (5.82 oz)
Status	Available. Released 2019, June
Technology	GSM / CDMA / HSPA / EVDO / LTE
2G bands	GSM 850 / 900 / 1800 / 1900
3G bands	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
GPRS	Yes
EDGE	Yes
Build	Glass front, plastic back, aluminum frame
SIM	Nano-SIM
Protection	Corning Gorilla Glass 3
Chipset	Qualcomm SDM675 Snapdragon 675 (11 nm)
CPU	Octa-core (2x2.0 GHz Kryo 460 Gold & 6x1.7 GHz Kryo 460 Silver)
GPU	Adreno 612
Card slot	microSDXC (uses shared SIM slot)
Selfie Camera Features	HDR
Selfie Video	1080p@30fps
Loudspeaker	Yes
3.5mm jack	Yes
WLAN	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Bluetooth	5.0, A2DP, LE, EDR
GPS	Yes, with A-GPS, GLONASS, GALILEO
NFC	Yes
Radio	FM radio
USB	USB Type-C 3.1
Sensors	Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Colors	Flash Gray, Frost White
Announced	2019, May
Speed	HSPA 42.2/5.76 Mbps
Main Camera Features	HDR, panorama
Video	4K@30fps, 1080p@30/60fps
Charging	15W
4G bands	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 38, 40, 41, 66