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hi,sorry for this silly quistion,
my son give me his phone sony ericsson i think it is 800 (no hand book) cyber shot can someone please tell me how to remove sim card and battery,
i am an oap and not very well up with this ,any help or visual aid would be helpful
Hi, in order for us to help you, we need to know the exact model. See if you are able to locate it here, http://www.sonyericsson.com/cws/products/mobilephones?cc=gb&lc=en 
im not sure, i think it is a k800i.
Here you go .... K800i User Guide, http://www.virginmobile.com/vm/media/pdf/userguides_qsg/sonyericsson/K800/SonyEricsson%20K800i%20man.... You should find the answer in page 5. 
Suggest you save or print out the User Guide for future reference.