Hi,
First do the following step and insert your memory,if the problem create same after doing this ,think your memory chip damaged.
Just follow the steps
Make a backup of contacts in your another Sim.
Switch-off your phone.
1. Press and hold there keys at a time;
Green dial key,
* Star key,
No. 3 key
Then Power on/off to switch on the phone.
All switch will be pressed at a time.
.Soon an formatting text, will appear ,then stop pressing those switch,
remember. 2. After a few minutes when the Full phone formatting
completed, your phone will back to original system and factory setting.
Hope this helps.
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