How to Double the memory of an iPhone 7/256GB

Apple must have started to feel guilty because they finally came around and doubled the internal storage on each of its iPhone 7 and iPhone 7 Plus models. Last year's 16GB, 64GB and 128GB became this year's 32GB, 128GB or 256GB of storage space. No matter how much storage you have, it’s usually never enough. Apple will never add support for memory cards to its iPhone lineup, but there are solutions out there that let you expand your iPhone’s memory.  Now you can add 256GB of memory to your iPhone. While not cheap at $199.99 on Amazon, it is still a great solution for folks that store tons of stuff on their iPhones.
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SanDisk iXpand Flash Drive 256GB.
Some highlights from the product page:

• The flash drive for your iPhone and iPad
• Quickly free up space on your iPhone
• Automatically back up photos and videos when connected
• Watch popular-format videos directly from the drive (.WMV, .AVI, .MKV, .MP4, .MOV)
• Designed with a flexible connector to fit through most iPhone cases