Stretch Android Storage: Cloud, USB Drives, and OTG Tricks
To free up space on Android without a microSD, you can use cloud storage like Google One/Photos/Drive (15GB free, with backups counting toward your quota) or connect USB-C external storage via OTG (external SSDs or USB drives accessed through the phone’s file manager). Some newer Android versions also let you move installed apps to an SD card on devices that still include a microSD slot. High-end phones capable of 8K recording may even write directly to an external SSD.