Intex Mobile / Intex Technologies — Having a troubling in my intex mobile contacts

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176110

I had purchased my intex mobile Q 3 when i restart my mob after few time i start the internet in my mobile i lost my half of contacts in my sim then i had to restart again my phone after that its shows my full contact. This problem i face last one year...So can u pls help me what to do i also redownload the software in intex care same thing again goes on after three months...so pls help me to sotted out this problem