My daughter was watching YT on my old S4 yesterday when the battery got low. As she put it on charge a black screen came on with the Android symbol and thr text 'Download in progress, don't turn ofd' (or something along those lines) Well the battery then died and now nothing works. It doesn't charge at all. Twice, upon holding the start button down that same black screen came on for a second and now nothing.
I've exchanged batteries with my husband's old S4 and still nothing. The cable works on all other phones.
Any ideas what, how and why, please?
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