Before flyme 5 never did get a problems with 3g internet, so i saw that my internet connection is very slow and doesn’t work as before. I am on contract with provider and they have an app to see how much left free megabytes, sms and calling minutes. So on flyme 5 that app said that i doesn’t have a providers Sim card or i am using wifi internet.
Simple solution for flyme 5a or y users:
At settings>sims and networks>apn settings>open your wap providers settings> at proxy you see an IP address and below you see a port number. Add this port number with colon to ip address. Save settings. See picture below
Go and check your internet speed or applications that wants to read your sim card.