How do I do factory reset for my Samsung sph-m840?

[AC Question]

I lost my password.

 

[B. Diddy]

Welcome to Android Central!

https://www.youtube.com/watch?v=m9yGP_fBNqQ

Next time, keep your password in a safe place so you can remind yourself!

 

[Bella Buger]

My galaxy sph-840 will not master reset or download any kind of apps. I have 14.5gb. What do I do

 

[belodion]

^^^Welcome to the forums.

Try a Cache Partition wipe first. No personal data will be lost.

Before that, go to settings, Storage, Cached Data, and clear the cache. That may help.

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