LG LG-E730 - Msm Sub System

3. TECHNICAL BRIEF
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3.11.2 MSM Sub System
3.11.2.1 UIM interfaces
The reference design includes a primary UIM connection via the UIM2 interface (GPIOs 53, 54, and 57) and a
secondary UIM connection via the UIM1 interface (GPIOs 49, 50, 52). The primary UIM interface supports dual-
voltage UIM modules. while the secondary UIM interface supports only 1.8 V cards.
[Figure 3.11.2.1] Example SIM connection