What's the complete map from letter to mobile network type? I was wondering about what all letters mean. Specifically the "R" that I'm currently on.

I found this summary by some provider, but it doesn't contain the R-symbol that I'm on right now.

These are the symbols I've found thus far:


G GPRS
E EDGE
3G 3G
H HSDPA
H+ HSDPA+
LTE LTE
The letter R means that you are roaming. You are out of your mobile provider home country or you are roaming while using a virtual mobile provider. Some providers that don't has his own network can cause that your phone shows a roaming signal, dependent of your phone firmware.