2 Test limits (specified in the product specific data package) are quite tight. Small limit violations do not
always mean that the tested product is broken, but the RF performance may not be as good as it should
be.
3 RX measurements (RSSI, SNR) may fail because of strong signals from base stations nearby. It is
recommended to always perform RF measurements in an RF-shielded environment (in an RF-shield box
or room).
4 The phone is really broken and needs more specific troubleshooting. Typical for these cases is that
RF
Testing
gives measurement results which are far from the test limits.
Note: Start the more specific troubleshooting always from the chapter Cellular RF main
troubleshooting (page 4–7 ) . The troubleshooting flow below may be misleading if followed
without upper level instructions.
Troubleshooting flow — Page 1 of 3
RM-596
Cellular RF troubleshooting
Page 4 – 24 COMPANY CONFIDENTIAL Issue 2
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