Incipio has made a solution that allows smartphones with non-expandable storage the ability to support a microSD card up to 128GB.
The Incipio offGRID has a built-in capacity of 3,700mAh Li-Ion battery. That, plus a microSD card slot that augments the storage capacity of your Samsung Galaxy S6 and S6 Edge up to 128GB. This of it as a semi-permanent USB OTG case which uses a microSD card as external storage source.

The offGRID battery case supports Qualcomm Quick Charge 2.0 and Samsung Fast Charging pass-through but we don’t think you can still use the wireless charger that is bundled with your Galaxy S6.
The Incipio case will retail for $89.99 when it comes out in stores.
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LG G4 nalang bibilhin ko. Hindi ko na kailangan mag lagay ng case para maging expandable yung memory. Tapos pwede pa ako mag papalit palit ng batterya dahil removeable siya.