Help with P20 Pro Dual Sim Functionality

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Hi there,

I recently got one of these awesome phones, but I am having some trouble with the dual sim functionality.

I have my Vodacom sim as a primary for voice, and then a Telkom sim for data as secondary.

If I wanted to check my data balanc on the Telkom sim, how would I do that? I.e. how do I dial a USSD code for Sim 2?

A second question, what is the best way to manage, top up data on a Telkom FreeMe package?

Thanks in advance.

 

[NeonNinja]

Settings. Sim cards & mobile networks. Set default there (can set dialing plus data defaults). Besides when you enter dialing mode, it asks which sim to use.