Upgrading to larger micro SD card and dealing with .android_secure
I could not find away to transfer .android_secure from the old card to the new card without the use of a computer. Using a computer that shows hidden files (Tools-Folder Options-View Tab, check Show Hidden Files and Folders, and Uncheck the next three "hide" choices) click Apply, click OK.
I will refer to the smaller micro SD card as the old card and the bigger micro SD card as the new card
1. In phone: Settings, storage, SD card -Click Unmount
2. Power phone off
3. Remove old card and put in your computer, using a micro sd adaptor or card reader.
4. Put new card into phone, replace battery and turn power on.
The new card I used (see below) did not need to be formatted. Whatever you do, do NOT format using your computer. If you need to format, always format in your phone (Settings, storage, SD card -Click format)
5. Plug phone into computer. Open phone (new)card folder.
6.On computer, open old card folder, Copy entire contents and Paste into new card folder. When done make sure that everything copied, recopy any paste any files that got left behind.
7. The only file that should be left to move is .android_Secure, Copy and Paste it onto your computer desktop.
8. Unmount old card from card reader.
9. Power off phone and remove new card, insert new card into computer card reader.
10. Drag .android_secure into new card
11. Unmount new card from computer, and put back into phone.
Ta-Da! It should all be good.
The card I used is a SanDisk Ultra microSDXC UHS-I "Ideal for Android" 128 GB Speed up to 80 mb/s. This card is good for most people. If you play super fast games on your phone then double check whether you need a faster card.