Hi here i wanted to post few tips of using n70 in a faster n non hanging manner, its my personal experience what i m sharing :-) ,
1) prevent slow down : the python applications r indeed very great n useful but it eats up ram while running for long hours like image designer,theme builder,etc. Use the required application n restart ur mobile after the use.
2)To prevent hang : the libs folder in system folder of memory card is whole lot storage of functions, when u delete some application some libs remain back(what i call as ghosts) these slow up functions of mobile.Use application manager to delete the installed files or any other software
3)video playback:sometimes the videos get hanged in gallery. Reasons are:another hidden application running simultaneously;too many or large .Avi or other video formats in gallery,too many images been deleted from a file manager but left behind the thumbnails;screen size of video not compatible, do look on to these aspects n rectify it.
4)DANGEROUS FILES:
as u know viruses n worms screw our mobile but some files like the few libs of ngage =>ecom.Dll,stringpool.Dll,ecomserver.Exe,so on interferes the default application n n 70 n makes it useless..Psiloc applications run great on s60 but on n70 its little bit too slow n adds unnecessary files to libs folder n makes it slow.
5)When screen goes blank: after certain applications installed which r not most of the time compatible the screen goes blank.. Not to worry remove the battery switch off the mobile n remove memory card. Restart without the memory card see if any damage to phone memory, when it switched on check the memory of phone. Using a computer scan the memory card for malwares or viruses.. Go to system folder delete data,libs,sharedata folders. Remember the other applications won't run but this s to prevent the memory card to get corrupted n loose all ur image/video files.
6)IMPORTANT : TRY NOT TO INSTALL 6600 OR LOWER VERSION THEMES,TRY NOT TO USE THE PHONE MEMORY KEEP IT MINIMUM 15MB FREE,SMS SHOULD B IN PHONE MEMORY AS IT SPEEDS UP MESSAGING WINDOW(FOR TRANSFERRING FILES SWITCH ON TO MEMORY CARD THEN SET AGAIN TO NORMAL),NEVER USE MORE APPLICATION FOR SINGLE PURPOSE LIKE MP3 PLAYBACK,PHOTO EDITING,BROWSER.Don't use an external speaker connection like with an amplifier alwys it reduces the battery life
7)BLUETOOTH: KEEP THE BLUETOOTH ALWYS HIDDEN,DON'T USE THE APPLICATION RUNNING WIT BLUETOOTH OFTEN ,AFTER TRANSFERRING LARGE FILE DO RESTART UR PHONE,
8)SLIDE SHUTTER PROBLEM:IF UR SLIDE SHUTTER HAS BECOME WEAK N NEEDS MANIPULATIONS TO SWITCH ON THE MAIN CAMERA THEN BETTER IS ADD AN EXTERNAL CASING TO IT,THE ORIGINAL PANELS R SOFT ON THE SWITCHES SO WON'T HARM. Try not to insert or add duplicate panels to recover from problem