Clarification on Iphone field test results

ChaGPT says:

The terms SINR0 and SINR1 refer to Signal to Interference plus Noise Ratio at different points or channels in the network, such as the primary and secondary components of a signal measurement.

• SINR0 typically refers to the SINR value of the primary data stream or channel.
• SINR1 may refer to the SINR value of the secondary stream or a secondary channel (for example, in the case of multiple antennas or multiple carrier aggregation).

SINR (Signal-to-Interference plus Noise Ratio) is a measure of the quality of the signal in relation to the interference and noise present. It's often expressed in dB (decibels). A higher SINR indicates a cleaner signal with less interference, which generally means better data rates and performance.

Regarding the -200 dBm reading, this is extremely low and usually indicates an error or a mismeasurement. Normally, SINR values are reported in positive dB or slightly negative dB values (ranging from around -20 to 30 dB in a good signal scenario).

A SINR of -200 dBm suggests:

1. Signal loss: The device might be experiencing a severe loss of signal strength or a failure in the measurement.
2. Measurement error: This could also be due to a malfunction or bad connection while capturing the data.

In practice, SINR values don't go below -20 dBm under typical conditions. A -200 dBm reading is abnormal and likely requires investigation, possibly with network diagnostics or support.

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