Question

How to FIX KeyguardTestActivity problem on Galaxy Tab 3.

I recently updated my Galaxy tab 3 as i haven't been on it in a good year or two. After the update installed, it now keeps coming up with this message, "Unfortunately, KeyguardTestActivity has stopped". I have wipe data/factory reset three times now and this message keeps popping up continuously. Please help me!!

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Answer
This usually is the end of that tablet.

Priors point to code errrors in the ROM. As a last hurrah be sure to unplug all memory cards and reset+wipe one last time. If it fails, head to XDA Forums and try another ROM.

I defer to XDA for roms, how to install, etc.

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PS. Small world. on my desk I have this model.

The Samsung Galaxy Tab 3. Model # SM-T3100MKAXAC

Android 4.4.2 ahh, there's an update. Installing. BRB

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That wasn't that big. 6.2MB.

OK, still 4.4.2

I don't have a SD card in and zero apps installed. How about yours?

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