HTC One M8 User Manual page 221

Back up data and files
Keep only the most recent data in your apps and files that you often need
to use. You can back up your other data and files. For some tips, see
of backing up files, data, and settings
Disable some apps
See Disabling an app
Move some apps to the storage card
Some third-party apps can be moved from the phone storage to the
storage card. Go to Settings > App manager > On SD card to see which
apps can be moved. To move, tap an app, and then tap Move.
§ Moving apps to the storage card doesn't back up the apps. If you
do a factory reset, your phone loses the apps. You'll need to
reinstall them.
§ When you remove the storage card and insert it in another phone,
the apps on the storage card won't be installed automatically to
the other phone. You'll need to reinstall them.
on page 326.
on page 233.
Storage and files
Ways
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