Apple products such as iPhone , iPad all have a common feature that is no memory card slot, so what is the solution to increase memory for those devices?
USB port lightning for all iPhone or iPad
USB for iPhone means you can plug USB directly into iPhone or iPad using the lightning charging port on the machine, the way it works similar to when you plug USB into a computer.

USB will have 2 ends with 2 ports, 1 is a lightning port to plug into the iPhone, 1 port is the standard USB
This is a great solution for those who use a low capacity iPhone that needs to store lots of pictures. USB allows copying, moving pictures from the device to USB or vice versa, helping to free up full memory for you.
![USB for iPhone, why should have one in your backpack?]()
In addition, USB also has an even more great feature that allows watching videos with many different formats on USB, which means you save videos to USB, then attach them to your iPhone or iPad to play videos .
![USB for iPhone, why should have one in your backpack?]()
Of course, indispensable use features like a normal USB with laptop or desktop computer.
When using this USB, you need to install a 3rd third application from the manufacturer to help optimize USB usage, as well as many other settings you choose.
You can refer to USB lightning port products here .