Greenage Telecom Building/Manual/SIM

Manual: SIM

The SIM cards are an important part of calling someone. There are 3 types of SIM cards, SIMP, GMP and GMP/SMP.

When buying a phone, you need to specify which SIM card you want. If you don't do that, it will go to SIMP by default.

Different SIM cards allow you to use different numbers, it does make it complicated if you have all three SIM cards. Just 1 is enough.