i forgot my lock code for reset factory setting
Further to the post by mechanimal82 as mentioned in the earlier posts..a proof of ownership (Bill / Invoice) will be needed..
If the videos were saved on the card then there is no way to retrieve it from the phone, unless you saved a copy to the phone as well. Hard reset will permanently erase the phone memory.
I'm not sure what you mean by "MSG type". There are 3 different resets andthey are all different. The buttons reset is the highest level reset.
File is not retrievable by normal means once deleted from the memory card. You could try a data recovery specialist but it will probably cost.
If song is in both card and phone memory then yes you can play song without card. After hard reset, phone is like the first day you got it. It will ask you for country, time zone etc. Just follow instructions. All data is permanently erased. You can sell the phone.