Figure 14 SIM voltages, no ATR
SIM card rejected
The error “SIM card rejected” means that the ATR message received from SIM card is corrupted, e.g. data
signal levels are wrong. The first data is always ATR and it is sent from card to phone. For reference a picture
with normal SIM power-up is shown below.
Figure 15 SIM voltages, normal startup at 3V
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BB Troubleshooting and Manual Tuning Guide
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COMPANY CONFIDENTIAL
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