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i bought a B993 from him last June 7, 2014
i rarely used cause of the sim card cannot detect and no signal maybe cause i\'m on a yolanda affected place so signal is not yet that stable on those months, but this week smart just upgraded their system in our town and it really doesnt connect, tried Mr. Google already but no luck! i txt him today if he have a firmware and he asked what\'s the problem and i replied no signal and cannot detect sim, then he replied;
\"naku, madalas ung ganyan prob ay kuryente related, kapag surge or fluctuate, nasisira ic nya.\"
i\'m not a electric geek but if there\'s a surge the power adapter should be the 1st to be broken before the unit? and in the 1st place you should have told that this unit have that kind of issue and suggest some better one, not against in adding some bucks on other aslong its worth of use, this unit havent even reach a 3 months use and its already broken.