I've had a galaxy tab s2 9.7 for over 18 months and it's been great till now. Unfortunately it's gone bananas. Touchwiz and any other launcher i use lags and the device storage is always unavailable even though i have over 12Gb free. The sd card is no longer acknowledged (the card is fine I've checked in another device). I have done a factory reset at least 10 times now with no success. I've also gone to recovery mode and used every option with no success. I would appreciate any and all suggestions. Thanks
