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Thischapterlistssomeproblemsyoumightencounterwhenusingyourphone.Some
problemsrequireyoutocallyourserviceprovider,butmostareeasytofixyourself.
Message Possible causes Possible corrective measures
Micro-USIM
carderror
ThereisnoMicro-
USIMcardinthe
phoneoritis
insertedincorrectly.
MakesurethattheMicro-USIMcardis
correctlyinserted.
Nonetwork
connection/
Dropped
network
Signalisweakor
youareoutsidethe
carriernetwork.
Movetowardawindoworinto
anopenarea.Checkthenetwork
operatorcoveragemap.
Operatorapplied
newservices.
CheckwhethertheSIMcardismore
than6~12monthsold.Ifso,change
yourSIMcardatyournetwork
provider'snearestbranch.Contact
yourserviceprovider.
Codesdonot
match
Tochangea
securitycode,you
willneedtoconfirm
thenewcodeby
re-enteringit.
Ifyouforgetthecode,contactyour
serviceprovider.
Thetwocodesyou
haveentereddo
notmatch.
Troubleshooting
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