Operation Manual

AT-S3D Dual SIM Phone Manual
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PIN1code.
SIM 1 PIN2 Code: It is the personal identification number used for some special
functionssuchaspaidcalletc.

SIM1PUKCodeandPUK2Code(8‐digit)
To change the locked SIM1 PIN code, you need to use SIM1 PUK (Personal
UnblockingKey)code.Tochangethe
lockedSIM1PIN2code,youneedtouseSIM1
PUK2 code. If these two codes are not provided together with the SIM cards, ask
thelocalserviceproviderforthem.
Warning:IfthePINcodeisinputwronglyforsuccessivelythreetimes,theSIMcard
willbe locked. Pleasecontact thenetworkoperatorimmediately forhelp.Attempt
tounlockthecodemaymaketheSIMcardineffectiveforever!

SIM2P1NCode
It is the personal identification number used to enter
 SIM1 and able to prevent
othersusingSIM1withoutpermission.IfthemobilephonehasactivatedtheSIM2
PIN1 code protection, when the mobile phone is switched on, the screen will
display“Input SIM2PIN”.In theprocess ofinputting SIM2 PIN1 code,the screen
willuse[*]to
representtheinputcontent.WhileobtainingSIM2,youcanobtainits
PIN1code.
SIM 2 PIN2 Code: It is the personal identification number used for some special
functionssuchaspaidcalletc.

SIM2PUKCodeandPUK2Code(8‐digit)
To change the locked SIM2 PIN code, you need
to use SIM1 PUK (Personal
UnblockingKey)code.TochangethelockedSIM2PIN2code,youneedtouseSIM2
PUK2 code. If these two codes are not provided together with the SIM cards, ask
thelocalserviceproviderforthem.
Warning:IfthePINcodeisinputwronglyforsuccessivelythreetimes,theSIMcard
willbe locked. Pleasecontact thenetworkoperatorimmediately forhelp.Attempt
tounlockthecodemaymaketheSIMcardineffectiveforever!