I have a month of having installed Xiaomi Eu, and all this time has presented me with a bug of loss of signal on one of my lines, and discarded the idea that it was a mistake of my operator as my friends and family works perfectly and the error only appears at the time when the signal enters 4g or Lte +, I will attach a picture to show you, the only solution I have found is to leave the operator in the 3g option, I hope someone can help me, thanks.