ZTE Grand X Max+ - Manual (Page 51)

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Problem Possible causes Possible solution
Unable to
connect to the
network
The micro-SIM card is invalid . Contact your service provider .
You are not within the network’s
service area .
Check the service area with
your service provider .
Poor signal . Move to an open space, or if
you are inside a building, move
closer to a window .
Cannot answer
incoming calls
You have activated the Call Barring
feature .
Go to Call Barring Settings, and
then select Deactivate All .
Cannot make
outgoing calls
You have activated the Call Barring
feature .
Go to Call Barring Settings, and
then select Deactivate All .
You have activated Fixed Dialing
Numbers .
Go to Fixed Dialing Numbers
and disable it .
PIN code
blocked
You have entered an incorrect PIN
code three consecutive times .
Contact your service provider .
If the service provider provides
the SIM card’s PUK code, use
the PUK code to unlock the SIM
card .
Unable to enter
information into
the phonebook
The phonebook’s memory is already
full .
Delete unnecessary data from
the contacts .
Phone crashes,
reboots, freezes,
or cannot be
powered on
Some third-party software is not
compatible with your phone .
Uninstall the software that may
cause the problem .
Upgrade the phone software .
Reset the phone to factory
status .
Device is
sluggish or
responds slowly
Your phone is allocating memory to a
large number of apps running at the
same time .
Go to Task Manager and close
apps that are not being used .
TROUBLESHOOTING
For your safety
General safety
Don’t make or receive
handheld calls while
driving . And never text
while driving .
Don’t use at gas stations .
Keep your phone at least
half an inch (15 mm) away
from your ear or body while
making calls .
Your phone may produce
a bright or flashing light .
Small parts may cause
choking .
Don’t dispose of your phone
in a fire .
Your phone can produce
a loud sound .
To prevent possible hearing
damage, do not listen at high
volume levels for long periods
Avoid contact with
anything magnetic .
Avoid extreme temperatures .
Keep away from
pacemakers and other
electronic medical devices .
Avoid contact with liquids . Keep
your phone dry .
Power off when asked to
in hospitals and medical
facilities .
Don’t take your phone apart .
Power off when told to
in aircrafts and airports .
Only use approved accessories .
Power off when near
explosive materials or
liquids .
Don’t rely on your phone as a
primary device for emergency
communications .
FOR YOUR SAFETY