Buenos Días and Sorry for your Loss Pedro. Try this pero antes saque la
batería por unos minutos y después con el cargador original déjelo cargando
varias horas , yo lo dejaría 8 horas.
Parece hay un defecto de fabricación según se quejan muchos en internet and
that is no good !!!.. Como dice el dicho lo barato sale caro y no sólo en Cuba.
ATS es el hombre del cautin fino !!!, Talk to him !!! jejeje
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At last....!!!I could resolve the issue with my phone....!!!!
Issue was with the power IC, pmi 8994 ic. some sort of loose connection.
Solution : heat with a heat gun to 400C . Please beware cover other parts
with heat resistance tape. Or other circuit parts might get damaged. It
worked for me. Thankful to https://www.youtube.com/watch?v=zvCfCRyln58 video.
If it doesnt work with you you will have to replace the pmi 8994 ic. But it
is very risky to remove it.