Sercomtel Internet Configurações de APN para o Acer Liquid M330

In Cellular, select your SIM card
Select Properties
Under Internet APN select Add an Internet APN

Profile name: Sercomtel Internet
APN: sercomtel.com.br
User name: sercomtel
Password: sercomtel
Type of sign-in info: PAP
IP type: IPv4

Enable Use this APN for LTE and replace the one from my mobile operator

Proxy server (URL):
Proxy port:

Tap Save