It's ok with new cable, fast charging is working, charging faster than 3000mah and completely charged is possibly in a night. This new cable is a type C/USB cord 1m.
Same problem for me, fastcharging not working, 515mah max, need more than 20hours to completely charge... I try with differents cable and same result... Waiting for correcting version...
Exactly the same problem 4g switching sometimes in 3g in France with my bv9500. When it's occured, people can't call me, internet isn't available... To solve the connection problems, I'm forced to restart phone to try to get 4g...