Huawei Technical Forum: e220 at command for umts-only mode …

As with most 3G Modems AT+COPS only accepts 3 Parameters and though it will not work.

But those work:

GPRSONLY: AT^SYSCFG=13,1,3FFFFFFF,2,4

3GONLY: AT^SYSCFG=14,2,3FFFFFFF,2,4

GPRSPREF : AT^SYSCFG=2,1,3FFFFFFF,2,4

3GPREF: AT^SYSCFG=2,2,3FFFFFFF,2,4

This information was taken out of Vodafone Mobile Connect Software (Linux Version) Python Code.

viaHuawei Technical Forum: e220 at command for umts-only mode ….