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where is the memory located lumia 930, mine wont start just keeps vibrating about every 15 seconds sometimes windows logo flashes. have tried evrything from holding buttons to buying new battery, nothing makes a difference so wondering if i can change memory into a working phone

The flash memory is soldered down to the motherboard… I don’t think you can swap it, because it may be BGA or fine soldered. Here’s a guide for removing the motherboard. Nokia Lumia 930 Motherboard Replacement Good luck!