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 One of the most important parts that you should carefully read and follow all instructions are step by step tutorial on open / remove the back cover and then put it back. This is because if you make a mistake in the

Picture above (see section Resume also) show you how to do it, including the lock and opening the cover, insert the SIM card, assemble battery (Li using this type of ion with 1850 mAh capacity) and installing the memory card. If you want a more detailed explanation, download the PDF guide below and open page 12 to page 17 under the Getting Started chapter. These tutorials are the same for both versions of Jelly Bean or ICS Manual