What do you mean? You can save files, photos, music and documents to the SD card. You can move or run some apps to the SD card; mostly games or anything that doesn't hook into the OS. But you shouldn't, as they will perform slowly. You can go down your apps list when you have time to waste, open the app settings, check the storage location and any app with the "change" button can be moved to the SD card. Again, it's not advisable to do so. SD cards should be reserved strictly for data, not apps.
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What do you mean? You can save files, photos, music and documents to the SD card. You can move or run some apps to the SD card; mostly games or anything that doesn't hook into the OS. But you shouldn't, as they will perform slowly. You can go down your apps list when you have time to waste, open the app settings, check the storage location and any app with the "change" button can be moved to the SD card. Again, it's not advisable to do so. SD cards should be reserved strictly for data, not apps.
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You can enable the option to force apps onto SD card in the developer options. This allows more apps to be stored and used from the SD card. As @realaud said, some apps cannot run from the SD card.
Oh, I wouldn't advise people to use developer options for anything if they do not 100% know what they are doing and what each control does. Many people go into developer options say, "this looks interesting", turn on a control and completely muck things up. Worse than that, some people have enabled/disabled more than one control at a time, not remembered what they turned off/on and then can't reverse it. Developer options are not for novices and certainly not without explicit instructions on what to enable/disable.
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