Buy storage via the Google One app
You can't add storage to an iPhone. If you need more storage on your device, you will need a new device. You may be able to offload some items to iCloud storage to free up space. It is not possible to add device storage to any iPhone.
Attach an External Drive or Flash Drive This allows you to store media files on inexpensive external storage and save your iPad space for critical apps. To connect an external hard drive, USB drive, or SD card reader to your iPad, use a compatible adapter to connect the device to your iPad's charging port.
The memory in the 21.5-inch iMac is not user-replaceable and can only be upgraded by an Apple authorized service provider. The 21.5-inch iMac can have a maximum of 32 GB (gigabytes) of memory installed. Do not attempt to open your 21.5-inch iMac to replace or upgrade its memory.
How to Add More Storage to Your MacBook: 6 Methods That Work
Go to Settings-> General-> Storage & iCloud Usage.
You can't buy extra storage for an apple watch. It is not enough to free up the 2.5 gigabites required to install the update. If I could, I would remove the photos app, the music app, the audio books app and all the other apps I never use.
If your MacBook has USB Type-A connectors (the old USB standard, not the new reversible one), then you can use a low-profile USB drive to add storage. These small devices fit into a spare USB slot and protrude slightly from the side of your MacBook.
Although it depends on the brand and model, most of the times you can't extend your current hard drive, because laptops have room only for one. With that said, you can change it to a new drive with more storage space on it (e.g. instead of 500 GB you can have 1 TB).
7 Ways to Expand Your PC Storage without Deleting Anything
No. Never. No Apple mobile iOS/iPadOS device have expandable internal data storage. The internal data storage is fixed to never be able to expanded/increased.
How To Add More Storage To Laptop