1. AC Question's Avatar
    The phone is a new factory unlocked phone, dual sim card, international version. I live in Mexico and I want to put a telcel sim card and a US sim card in it. I think that leads to 2 more questions. Should I do the OS replacement before I put the sim cards in? When I download Lollipop to the phone will it remove the KitKat system it came with?
    12-27-2015 01:34 PM
  2. B. Diddy's Avatar
    Welcome to Android Central! Do you know if there's an official 5.1 update available from Samsung? Check here, and select your exact model number: Search firmware for: "galaxy%20grand%20prime" - SamMobile
    01-05-2016 03:24 AM

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