Non sò che dirvi... anche io ho dei forti dubbi sulla soluzione che mi hanno proposto....
Dear customer,
Thanks for your feedback.
The problem could be solved by root the phone.
Here is the download link for it: W8线刷å‡çº§åŒ…20130418(FH4)_ThL下载ä¸*心 - ThL手机官网
But it shows all Chinese on the website,please kindly use google translation to translate it.
Sorry for the inconvenience and hope to hear good news from you soon.
have a nice day.
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Subject: Re: THL W8+ - Sleep time Bug
Dear THL,
I have already tried to reset the phone by the flash latest firmware available on your website (THL W8+打电话黑屏解决软件.zip). Unfortunately, the problem persists. Sometimes when the phone's lights off, can not turn back on by pressing the unlock button, but the release function is executed correctly because you hear the sound of the unlocking and if you receive a call, the phone rings.. It is in fact a problem limited to the reactivation of backlight of the screen. Several users have reported this bug in several forums. I look forward to your kind reply.