My Samsung Galaxy GT-S5570 is appearing a white screen.this happends after charging,and before opening the phone,and using the phone for a long time.this white colour will go afer sometime.please help me to solve the problem.
It sounds to me like your lcd is going out.... if the phone is responsive to your touch but the screen has gone completely white and comes back, it suggests an lcd issue and you should have it replaced
Hi,
I'm Ben and -- hopefully -- I can provide some meaningful
assistance.
It seems that your SIM card is locked.
SIM CARD:
If you enter a wrong PIN code too many times, usually three,
your SIM will lock itself. This protects you from someone using
your personal information or making calls if your cell phone is
lost or stolen. You may see "PIN blocked" or Enter PUK code" on
your cell phone display. The PUK code stands for PIN Unblocking
Key. In the U.S., the PUK code is rarely provided when you get
your subscription.
If you do not have your PUK code, contact the Customer Care
customer again. Give them your phone number and once they
are sure it is really you, they will give you the PUK code.
You will then be asked to set a new PIN code. Once you have
your PUK be sure to keep it in a safe place.
Note that if you enter a wrong PUK 10 times in a row, the SIM
will be permanently blocked, and you'll need to purchase a new
SIM card.
SOURCE: how to set a password of my samsung galaxy
you can contact the mobile service provider........
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